diff options
Diffstat (limited to 'external/libcurl_android/jni/libcurl/lib/multi.c')
| -rwxr-xr-x | external/libcurl_android/jni/libcurl/lib/multi.c | 2835 |
1 files changed, 0 insertions, 2835 deletions
diff --git a/external/libcurl_android/jni/libcurl/lib/multi.c b/external/libcurl_android/jni/libcurl/lib/multi.c deleted file mode 100755 index a1dc2c82..00000000 --- a/external/libcurl_android/jni/libcurl/lib/multi.c +++ /dev/null @@ -1,2835 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. - * - * This software is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at http://curl.haxx.se/docs/copyright.html. - * - * You may opt to use, copy, modify, merge, publish, distribute and/or sell - * copies of the Software, and permit persons to whom the Software is - * furnished to do so, under the terms of the COPYING file. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ***************************************************************************/ - -#include "curl_setup.h" - -#include <curl/curl.h> - -#include "urldata.h" -#include "transfer.h" -#include "url.h" -#include "connect.h" -#include "progress.h" -#include "easyif.h" -#include "share.h" -#include "multiif.h" -#include "sendf.h" -#include "timeval.h" -#include "http.h" -#include "select.h" -#include "warnless.h" -#include "speedcheck.h" -#include "conncache.h" -#include "bundles.h" -#include "multihandle.h" -#include "pipeline.h" -#include "sigpipe.h" - -#define _MPRINTF_REPLACE /* use our functions only */ -#include <curl/mprintf.h> - -#include "curl_memory.h" -/* The last #include file should be: */ -#include "memdebug.h" - -/* - CURL_SOCKET_HASH_TABLE_SIZE should be a prime number. Increasing it from 97 - to 911 takes on a 32-bit machine 4 x 804 = 3211 more bytes. Still, every - CURL handle takes 45-50 K memory, therefore this 3K are not significant. -*/ -#ifndef CURL_SOCKET_HASH_TABLE_SIZE -#define CURL_SOCKET_HASH_TABLE_SIZE 911 -#endif - -#define CURL_CONNECTION_HASH_SIZE 97 - -#define CURL_MULTI_HANDLE 0x000bab1e - -#define GOOD_MULTI_HANDLE(x) \ - ((x) && (((struct Curl_multi *)(x))->type == CURL_MULTI_HANDLE)) -#define GOOD_EASY_HANDLE(x) \ - ((x) && (((struct SessionHandle *)(x))->magic == CURLEASY_MAGIC_NUMBER)) - -static void singlesocket(struct Curl_multi *multi, - struct SessionHandle *data); -static int update_timer(struct Curl_multi *multi); - -static bool isHandleAtHead(struct SessionHandle *handle, - struct curl_llist *pipeline); -static CURLMcode add_next_timeout(struct timeval now, - struct Curl_multi *multi, - struct SessionHandle *d); -static CURLMcode multi_timeout(struct Curl_multi *multi, - long *timeout_ms); - -#ifdef DEBUGBUILD -static const char * const statename[]={ - "INIT", - "CONNECT_PEND", - "CONNECT", - "WAITRESOLVE", - "WAITCONNECT", - "WAITPROXYCONNECT", - "PROTOCONNECT", - "WAITDO", - "DO", - "DOING", - "DO_MORE", - "DO_DONE", - "WAITPERFORM", - "PERFORM", - "TOOFAST", - "DONE", - "COMPLETED", - "MSGSENT", -}; -#endif - -static void multi_freetimeout(void *a, void *b); - -/* always use this function to change state, to make debugging easier */ -static void mstate(struct SessionHandle *data, CURLMstate state -#ifdef DEBUGBUILD - , int lineno -#endif -) -{ -#ifdef DEBUGBUILD - long connection_id = -5000; -#endif - CURLMstate oldstate = data->mstate; - - if(oldstate == state) - /* don't bother when the new state is the same as the old state */ - return; - - data->mstate = state; - -#ifdef DEBUGBUILD - if(data->mstate >= CURLM_STATE_CONNECT_PEND && - data->mstate < CURLM_STATE_COMPLETED) { - if(data->easy_conn) - connection_id = data->easy_conn->connection_id; - - infof(data, - "STATE: %s => %s handle %p; line %d (connection #%ld) \n", - statename[oldstate], statename[data->mstate], - (void *)data, lineno, connection_id); - } -#endif - if(state == CURLM_STATE_COMPLETED) - /* changing to COMPLETED means there's one less easy handle 'alive' */ - data->multi->num_alive--; -} - -#ifndef DEBUGBUILD -#define multistate(x,y) mstate(x,y) -#else -#define multistate(x,y) mstate(x,y, __LINE__) -#endif - -/* - * We add one of these structs to the sockhash for a particular socket - */ - -struct Curl_sh_entry { - struct SessionHandle *easy; - time_t timestamp; - int action; /* what action READ/WRITE this socket waits for */ - curl_socket_t socket; /* mainly to ease debugging */ - void *socketp; /* settable by users with curl_multi_assign() */ -}; -/* bits for 'action' having no bits means this socket is not expecting any - action */ -#define SH_READ 1 -#define SH_WRITE 2 - -/* make sure this socket is present in the hash for this handle */ -static struct Curl_sh_entry *sh_addentry(struct curl_hash *sh, - curl_socket_t s, - struct SessionHandle *data) -{ - struct Curl_sh_entry *there = - Curl_hash_pick(sh, (char *)&s, sizeof(curl_socket_t)); - struct Curl_sh_entry *check; - - if(there) - /* it is present, return fine */ - return there; - - /* not present, add it */ - check = calloc(1, sizeof(struct Curl_sh_entry)); - if(!check) - return NULL; /* major failure */ - check->easy = data; - check->socket = s; - - /* make/add new hash entry */ - if(NULL == Curl_hash_add(sh, (char *)&s, sizeof(curl_socket_t), check)) { - free(check); - return NULL; /* major failure */ - } - - return check; /* things are good in sockhash land */ -} - - -/* delete the given socket + handle from the hash */ -static void sh_delentry(struct curl_hash *sh, curl_socket_t s) -{ - struct Curl_sh_entry *there = - Curl_hash_pick(sh, (char *)&s, sizeof(curl_socket_t)); - - if(there) { - /* this socket is in the hash */ - /* We remove the hash entry. (This'll end up in a call to - sh_freeentry().) */ - Curl_hash_delete(sh, (char *)&s, sizeof(curl_socket_t)); - } -} - -/* - * free a sockhash entry - */ -static void sh_freeentry(void *freethis) -{ - struct Curl_sh_entry *p = (struct Curl_sh_entry *) freethis; - - if(p) - free(p); -} - -static size_t fd_key_compare(void *k1, size_t k1_len, void *k2, size_t k2_len) -{ - (void) k1_len; (void) k2_len; - - return (*((int *) k1)) == (*((int *) k2)); -} - -static size_t hash_fd(void *key, size_t key_length, size_t slots_num) -{ - int fd = *((int *) key); - (void) key_length; - - return (fd % (int)slots_num); -} - -/* - * sh_init() creates a new socket hash and returns the handle for it. - * - * Quote from README.multi_socket: - * - * "Some tests at 7000 and 9000 connections showed that the socket hash lookup - * is somewhat of a bottle neck. Its current implementation may be a bit too - * limiting. It simply has a fixed-size array, and on each entry in the array - * it has a linked list with entries. So the hash only checks which list to - * scan through. The code I had used so for used a list with merely 7 slots - * (as that is what the DNS hash uses) but with 7000 connections that would - * make an average of 1000 nodes in each list to run through. I upped that to - * 97 slots (I believe a prime is suitable) and noticed a significant speed - * increase. I need to reconsider the hash implementation or use a rather - * large default value like this. At 9000 connections I was still below 10us - * per call." - * - */ -static struct curl_hash *sh_init(int hashsize) -{ - return Curl_hash_alloc(hashsize, hash_fd, fd_key_compare, - sh_freeentry); -} - -/* - * multi_addmsg() - * - * Called when a transfer is completed. Adds the given msg pointer to - * the list kept in the multi handle. - */ -static CURLMcode multi_addmsg(struct Curl_multi *multi, - struct Curl_message *msg) -{ - if(!Curl_llist_insert_next(multi->msglist, multi->msglist->tail, msg)) - return CURLM_OUT_OF_MEMORY; - - return CURLM_OK; -} - -/* - * multi_freeamsg() - * - * Callback used by the llist system when a single list entry is destroyed. - */ -static void multi_freeamsg(void *a, void *b) -{ - (void)a; - (void)b; -} - -struct Curl_multi *Curl_multi_handle(int hashsize, /* socket hash */ - int chashsize) /* connection hash */ -{ - struct Curl_multi *multi = calloc(1, sizeof(struct Curl_multi)); - - if(!multi) - return NULL; - - multi->type = CURL_MULTI_HANDLE; - - multi->hostcache = Curl_mk_dnscache(); - if(!multi->hostcache) - goto error; - - multi->sockhash = sh_init(hashsize); - if(!multi->sockhash) - goto error; - - multi->conn_cache = Curl_conncache_init(chashsize); - if(!multi->conn_cache) - goto error; - - multi->msglist = Curl_llist_alloc(multi_freeamsg); - if(!multi->msglist) - goto error; - - multi->pending = Curl_llist_alloc(multi_freeamsg); - if(!multi->pending) - goto error; - - /* allocate a new easy handle to use when closing cached connections */ - multi->closure_handle = curl_easy_init(); - if(!multi->closure_handle) - goto error; - - multi->closure_handle->multi = multi; - multi->closure_handle->state.conn_cache = multi->conn_cache; - - multi->max_pipeline_length = 5; - - /* -1 means it not set by user, use the default value */ - multi->maxconnects = -1; - return (CURLM *) multi; - - error: - - Curl_hash_destroy(multi->sockhash); - multi->sockhash = NULL; - Curl_hash_destroy(multi->hostcache); - multi->hostcache = NULL; - Curl_conncache_destroy(multi->conn_cache); - multi->conn_cache = NULL; - Curl_close(multi->closure_handle); - multi->closure_handle = NULL; - Curl_llist_destroy(multi->msglist, NULL); - Curl_llist_destroy(multi->pending, NULL); - - free(multi); - return NULL; -} - -CURLM *curl_multi_init(void) -{ - return Curl_multi_handle(CURL_SOCKET_HASH_TABLE_SIZE, - CURL_CONNECTION_HASH_SIZE); -} - -CURLMcode curl_multi_add_handle(CURLM *multi_handle, - CURL *easy_handle) -{ - struct curl_llist *timeoutlist; - struct Curl_multi *multi = (struct Curl_multi *)multi_handle; - struct SessionHandle *data = (struct SessionHandle *)easy_handle; - - /* First, make some basic checks that the CURLM handle is a good handle */ - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - /* Verify that we got a somewhat good easy handle too */ - if(!GOOD_EASY_HANDLE(easy_handle)) - return CURLM_BAD_EASY_HANDLE; - - /* Prevent users from adding same easy handle more than once and prevent - adding to more than one multi stack */ - if(data->multi) - return CURLM_ADDED_ALREADY; - - /* Allocate and initialize timeout list for easy handle */ - timeoutlist = Curl_llist_alloc(multi_freetimeout); - if(!timeoutlist) - return CURLM_OUT_OF_MEMORY; - - /* - * No failure allowed in this function beyond this point. And no - * modification of easy nor multi handle allowed before this except for - * potential multi's connection cache growing which won't be undone in this - * function no matter what. - */ - - /* Make easy handle use timeout list initialized above */ - data->state.timeoutlist = timeoutlist; - timeoutlist = NULL; - - /* set the easy handle */ - multistate(data, CURLM_STATE_INIT); - - if((data->set.global_dns_cache) && - (data->dns.hostcachetype != HCACHE_GLOBAL)) { - /* global dns cache was requested but still isn't */ - struct curl_hash *global = Curl_global_host_cache_init(); - if(global) { - /* only do this if the global cache init works */ - data->dns.hostcache = global; - data->dns.hostcachetype = HCACHE_GLOBAL; - } - } - /* for multi interface connections, we share DNS cache automatically if the - easy handle's one is currently not set. */ - else if(!data->dns.hostcache || - (data->dns.hostcachetype == HCACHE_NONE)) { - data->dns.hostcache = multi->hostcache; - data->dns.hostcachetype = HCACHE_MULTI; - } - - /* Point to the multi's connection cache */ - data->state.conn_cache = multi->conn_cache; - - data->state.infilesize = data->set.filesize; - - /* This adds the new entry at the 'end' of the doubly-linked circular - list of SessionHandle structs to try and maintain a FIFO queue so - the pipelined requests are in order. */ - - /* We add this new entry last in the list. */ - - data->next = NULL; /* end of the line */ - if(multi->easyp) { - struct SessionHandle *last = multi->easylp; - last->next = data; - data->prev = last; - multi->easylp = data; /* the new last node */ - } - else { - /* first node, make both prev and next be NULL! */ - data->next = NULL; - data->prev = NULL; - multi->easylp = multi->easyp = data; /* both first and last */ - } - - /* make the SessionHandle refer back to this multi handle */ - data->multi = multi_handle; - - /* Set the timeout for this handle to expire really soon so that it will - be taken care of even when this handle is added in the midst of operation - when only the curl_multi_socket() API is used. During that flow, only - sockets that time-out or have actions will be dealt with. Since this - handle has no action yet, we make sure it times out to get things to - happen. */ - Curl_expire(data, 1); - - /* increase the node-counter */ - multi->num_easy++; - - /* increase the alive-counter */ - multi->num_alive++; - - /* A somewhat crude work-around for a little glitch in update_timer() that - happens if the lastcall time is set to the same time when the handle is - removed as when the next handle is added, as then the check in - update_timer() that prevents calling the application multiple times with - the same timer infor will not trigger and then the new handle's timeout - will not be notified to the app. - - The work-around is thus simply to clear the 'lastcall' variable to force - update_timer() to always trigger a callback to the app when a new easy - handle is added */ - memset(&multi->timer_lastcall, 0, sizeof(multi->timer_lastcall)); - - update_timer(multi); - return CURLM_OK; -} - -#if 0 -/* Debug-function, used like this: - * - * Curl_hash_print(multi->sockhash, debug_print_sock_hash); - * - * Enable the hash print function first by editing hash.c - */ -static void debug_print_sock_hash(void *p) -{ - struct Curl_sh_entry *sh = (struct Curl_sh_entry *)p; - - fprintf(stderr, " [easy %p/magic %x/socket %d]", - (void *)sh->data, sh->data->magic, (int)sh->socket); -} -#endif - -CURLMcode curl_multi_remove_handle(CURLM *multi_handle, - CURL *curl_handle) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *easy = curl_handle; - struct SessionHandle *data = easy; - - /* First, make some basic checks that the CURLM handle is a good handle */ - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - /* Verify that we got a somewhat good easy handle too */ - if(!GOOD_EASY_HANDLE(curl_handle)) - return CURLM_BAD_EASY_HANDLE; - - /* Prevent users from trying to remove same easy handle more than once */ - if(!data->multi) - return CURLM_OK; /* it is already removed so let's say it is fine! */ - - if(easy) { - bool premature = (data->mstate < CURLM_STATE_COMPLETED) ? TRUE : FALSE; - bool easy_owns_conn = (data->easy_conn && - (data->easy_conn->data == easy)) ? - TRUE : FALSE; - - /* If the 'state' is not INIT or COMPLETED, we might need to do something - nice to put the easy_handle in a good known state when this returns. */ - if(premature) - /* this handle is "alive" so we need to count down the total number of - alive connections when this is removed */ - multi->num_alive--; - - if(data->easy_conn && - (data->easy_conn->send_pipe->size + - data->easy_conn->recv_pipe->size > 1) && - data->mstate > CURLM_STATE_WAITDO && - data->mstate < CURLM_STATE_COMPLETED) { - /* If the handle is in a pipeline and has started sending off its - request but not received its response yet, we need to close - connection. */ - connclose(data->easy_conn, "Removed with partial response"); - /* Set connection owner so that Curl_done() closes it. - We can sefely do this here since connection is killed. */ - data->easy_conn->data = easy; - } - - /* The timer must be shut down before data->multi is set to NULL, - else the timenode will remain in the splay tree after - curl_easy_cleanup is called. */ - Curl_expire(data, 0); - - /* destroy the timeout list that is held in the easy handle */ - if(data->state.timeoutlist) { - Curl_llist_destroy(data->state.timeoutlist, NULL); - data->state.timeoutlist = NULL; - } - - if(data->dns.hostcachetype == HCACHE_MULTI) { - /* stop using the multi handle's DNS cache */ - data->dns.hostcache = NULL; - data->dns.hostcachetype = HCACHE_NONE; - } - - if(data->easy_conn) { - - /* we must call Curl_done() here (if we still "own it") so that we don't - leave a half-baked one around */ - if(easy_owns_conn) { - - /* Curl_done() clears the conn->data field to lose the association - between the easy handle and the connection - - Note that this ignores the return code simply because there's - nothing really useful to do with it anyway! */ - (void)Curl_done(&data->easy_conn, data->result, premature); - } - else - /* Clear connection pipelines, if Curl_done above was not called */ - Curl_getoff_all_pipelines(data, data->easy_conn); - } - - Curl_wildcard_dtor(&data->wildcard); - - /* as this was using a shared connection cache we clear the pointer - to that since we're not part of that multi handle anymore */ - data->state.conn_cache = NULL; - - /* change state without using multistate(), only to make singlesocket() do - what we want */ - data->mstate = CURLM_STATE_COMPLETED; - singlesocket(multi, easy); /* to let the application know what sockets - that vanish with this handle */ - - /* Remove the association between the connection and the handle */ - if(data->easy_conn) { - data->easy_conn->data = NULL; - data->easy_conn = NULL; - } - - data->multi = NULL; /* clear the association to this multi handle */ - - { - /* make sure there's no pending message in the queue sent from this easy - handle */ - struct curl_llist_element *e; - - for(e = multi->msglist->head; e; e = e->next) { - struct Curl_message *msg = e->ptr; - - if(msg->extmsg.easy_handle == easy) { - Curl_llist_remove(multi->msglist, e, NULL); - /* there can only be one from this specific handle */ - break; - } - } - } - - /* make the previous node point to our next */ - if(data->prev) - data->prev->next = data->next; - else - multi->easyp = data->next; /* point to first node */ - - /* make our next point to our previous node */ - if(data->next) - data->next->prev = data->prev; - else - multi->easylp = data->prev; /* point to last node */ - - /* NOTE NOTE NOTE - We do not touch the easy handle here! */ - - multi->num_easy--; /* one less to care about now */ - - update_timer(multi); - return CURLM_OK; - } - else - return CURLM_BAD_EASY_HANDLE; /* twasn't found */ -} - -bool Curl_multi_pipeline_enabled(const struct Curl_multi *multi) -{ - return (multi && multi->pipelining_enabled) ? TRUE : FALSE; -} - -void Curl_multi_handlePipeBreak(struct SessionHandle *data) -{ - data->easy_conn = NULL; -} - -static int waitconnect_getsock(struct connectdata *conn, - curl_socket_t *sock, - int numsocks) -{ - int i; - int s=0; - int rc=0; - - if(!numsocks) - return GETSOCK_BLANK; - - for(i=0; i<2; i++) { - if(conn->tempsock[i] != CURL_SOCKET_BAD) { - sock[s] = conn->tempsock[i]; - rc |= GETSOCK_WRITESOCK(s++); - } - } - - /* when we've sent a CONNECT to a proxy, we should rather wait for the - socket to become readable to be able to get the response headers */ - if(conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT) { - sock[0] = conn->sock[FIRSTSOCKET]; - rc = GETSOCK_READSOCK(0); - } - - return rc; -} - -static int domore_getsock(struct connectdata *conn, - curl_socket_t *socks, - int numsocks) -{ - if(conn && conn->handler->domore_getsock) - return conn->handler->domore_getsock(conn, socks, numsocks); - return GETSOCK_BLANK; -} - -/* returns bitmapped flags for this handle and its sockets */ -static int multi_getsock(struct SessionHandle *data, - curl_socket_t *socks, /* points to numsocks number - of sockets */ - int numsocks) -{ - /* If the pipe broke, or if there's no connection left for this easy handle, - then we MUST bail out now with no bitmask set. The no connection case can - happen when this is called from curl_multi_remove_handle() => - singlesocket() => multi_getsock(). - */ - if(data->state.pipe_broke || !data->easy_conn) - return 0; - - if(data->mstate > CURLM_STATE_CONNECT && - data->mstate < CURLM_STATE_COMPLETED) { - /* Set up ownership correctly */ - data->easy_conn->data = data; - } - - switch(data->mstate) { - default: -#if 0 /* switch back on these cases to get the compiler to check for all enums - to be present */ - case CURLM_STATE_TOOFAST: /* returns 0, so will not select. */ - case CURLM_STATE_COMPLETED: - case CURLM_STATE_MSGSENT: - case CURLM_STATE_INIT: - case CURLM_STATE_CONNECT: - case CURLM_STATE_WAITDO: - case CURLM_STATE_DONE: - case CURLM_STATE_LAST: - /* this will get called with CURLM_STATE_COMPLETED when a handle is - removed */ -#endif - return 0; - - case CURLM_STATE_WAITRESOLVE: - return Curl_resolver_getsock(data->easy_conn, socks, numsocks); - - case CURLM_STATE_PROTOCONNECT: - return Curl_protocol_getsock(data->easy_conn, socks, numsocks); - - case CURLM_STATE_DO: - case CURLM_STATE_DOING: - return Curl_doing_getsock(data->easy_conn, socks, numsocks); - - case CURLM_STATE_WAITPROXYCONNECT: - case CURLM_STATE_WAITCONNECT: - return waitconnect_getsock(data->easy_conn, socks, numsocks); - - case CURLM_STATE_DO_MORE: - return domore_getsock(data->easy_conn, socks, numsocks); - - case CURLM_STATE_DO_DONE: /* since is set after DO is completed, we switch - to waiting for the same as the *PERFORM - states */ - case CURLM_STATE_PERFORM: - case CURLM_STATE_WAITPERFORM: - return Curl_single_getsock(data->easy_conn, socks, numsocks); - } - -} - -CURLMcode curl_multi_fdset(CURLM *multi_handle, - fd_set *read_fd_set, fd_set *write_fd_set, - fd_set *exc_fd_set, int *max_fd) -{ - /* Scan through all the easy handles to get the file descriptors set. - Some easy handles may not have connected to the remote host yet, - and then we must make sure that is done. */ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *data; - int this_max_fd=-1; - curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE]; - int bitmap; - int i; - (void)exc_fd_set; /* not used */ - - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - data=multi->easyp; - while(data) { - bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE); - - for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) { - curl_socket_t s = CURL_SOCKET_BAD; - - if((bitmap & GETSOCK_READSOCK(i)) && VALID_SOCK((sockbunch[i]))) { - FD_SET(sockbunch[i], read_fd_set); - s = sockbunch[i]; - } - if((bitmap & GETSOCK_WRITESOCK(i)) && VALID_SOCK((sockbunch[i]))) { - FD_SET(sockbunch[i], write_fd_set); - s = sockbunch[i]; - } - if(s == CURL_SOCKET_BAD) - /* this socket is unused, break out of loop */ - break; - else { - if((int)s > this_max_fd) - this_max_fd = (int)s; - } - } - - data = data->next; /* check next handle */ - } - - *max_fd = this_max_fd; - - return CURLM_OK; -} - -CURLMcode curl_multi_wait(CURLM *multi_handle, - struct curl_waitfd extra_fds[], - unsigned int extra_nfds, - int timeout_ms, - int *ret) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *data; - curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE]; - int bitmap; - unsigned int i; - unsigned int nfds = 0; - unsigned int curlfds; - struct pollfd *ufds = NULL; - long timeout_internal; - - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - /* If the internally desired timeout is actually shorter than requested from - the outside, then use the shorter time! But only if the internal timer - is actually larger than -1! */ - (void)multi_timeout(multi, &timeout_internal); - if((timeout_internal >= 0) && (timeout_internal < (long)timeout_ms)) - timeout_ms = (int)timeout_internal; - - /* Count up how many fds we have from the multi handle */ - data=multi->easyp; - while(data) { - bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE); - - for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) { - curl_socket_t s = CURL_SOCKET_BAD; - - if(bitmap & GETSOCK_READSOCK(i)) { - ++nfds; - s = sockbunch[i]; - } - if(bitmap & GETSOCK_WRITESOCK(i)) { - ++nfds; - s = sockbunch[i]; - } - if(s == CURL_SOCKET_BAD) { - break; - } - } - - data = data->next; /* check next handle */ - } - - curlfds = nfds; /* number of internal file descriptors */ - nfds += extra_nfds; /* add the externally provided ones */ - - if(nfds || extra_nfds) { - ufds = malloc(nfds * sizeof(struct pollfd)); - if(!ufds) - return CURLM_OUT_OF_MEMORY; - } - nfds = 0; - - /* only do the second loop if we found descriptors in the first stage run - above */ - - if(curlfds) { - /* Add the curl handles to our pollfds first */ - data=multi->easyp; - while(data) { - bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE); - - for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) { - curl_socket_t s = CURL_SOCKET_BAD; - - if(bitmap & GETSOCK_READSOCK(i)) { - ufds[nfds].fd = sockbunch[i]; - ufds[nfds].events = POLLIN; - ++nfds; - s = sockbunch[i]; - } - if(bitmap & GETSOCK_WRITESOCK(i)) { - ufds[nfds].fd = sockbunch[i]; - ufds[nfds].events = POLLOUT; - ++nfds; - s = sockbunch[i]; - } - if(s == CURL_SOCKET_BAD) { - break; - } - } - - data = data->next; /* check next handle */ - } - } - - /* Add external file descriptions from poll-like struct curl_waitfd */ - for(i = 0; i < extra_nfds; i++) { - ufds[nfds].fd = extra_fds[i].fd; - ufds[nfds].events = 0; - if(extra_fds[i].events & CURL_WAIT_POLLIN) - ufds[nfds].events |= POLLIN; - if(extra_fds[i].events & CURL_WAIT_POLLPRI) - ufds[nfds].events |= POLLPRI; - if(extra_fds[i].events & CURL_WAIT_POLLOUT) - ufds[nfds].events |= POLLOUT; - ++nfds; - } - - if(nfds) { - /* wait... */ - infof(data, "Curl_poll(%d ds, %d ms)\n", nfds, timeout_ms); - i = Curl_poll(ufds, nfds, timeout_ms); - - if(i) { - unsigned int j; - /* copy revents results from the poll to the curl_multi_wait poll - struct, the bit values of the actual underlying poll() implementation - may not be the same as the ones in the public libcurl API! */ - for(j = 0; j < extra_nfds; j++) { - unsigned short mask = 0; - unsigned r = ufds[curlfds + j].revents; - - if(r & POLLIN) - mask |= CURL_WAIT_POLLIN; - if(r & POLLOUT) - mask |= CURL_WAIT_POLLOUT; - if(r & POLLPRI) - mask |= CURL_WAIT_POLLPRI; - - extra_fds[j].revents = mask; - } - } - } - else - i = 0; - - Curl_safefree(ufds); - if(ret) - *ret = i; - return CURLM_OK; -} - -static CURLMcode multi_runsingle(struct Curl_multi *multi, - struct timeval now, - struct SessionHandle *data) -{ - struct Curl_message *msg = NULL; - bool connected; - bool async; - bool protocol_connect = FALSE; - bool dophase_done = FALSE; - bool done = FALSE; - CURLMcode result = CURLM_OK; - struct SingleRequest *k; - long timeout_ms; - int control; - - if(!GOOD_EASY_HANDLE(data)) - return CURLM_BAD_EASY_HANDLE; - - do { - /* this is a single-iteration do-while loop just to allow a - break to skip to the end of it */ - bool disconnect_conn = FALSE; - - /* Handle the case when the pipe breaks, i.e., the connection - we're using gets cleaned up and we're left with nothing. */ - if(data->state.pipe_broke) { - infof(data, "Pipe broke: handle 0x%p, url = %s\n", - (void *)data, data->state.path); - - if(data->mstate < CURLM_STATE_COMPLETED) { - /* Head back to the CONNECT state */ - multistate(data, CURLM_STATE_CONNECT); - result = CURLM_CALL_MULTI_PERFORM; - data->result = CURLE_OK; - } - - data->state.pipe_broke = FALSE; - data->easy_conn = NULL; - break; - } - - if(!data->easy_conn && - data->mstate > CURLM_STATE_CONNECT && - data->mstate < CURLM_STATE_DONE) { - /* In all these states, the code will blindly access 'data->easy_conn' - so this is precaution that it isn't NULL. And it silences static - analyzers. */ - failf(data, "In state %d with no easy_conn, bail out!\n", data->mstate); - return CURLM_INTERNAL_ERROR; - } - - if(data->easy_conn && data->mstate > CURLM_STATE_CONNECT && - data->mstate < CURLM_STATE_COMPLETED) - /* Make sure we set the connection's current owner */ - data->easy_conn->data = data; - - if(data->easy_conn && - (data->mstate >= CURLM_STATE_CONNECT) && - (data->mstate < CURLM_STATE_COMPLETED)) { - /* we need to wait for the connect state as only then is the start time - stored, but we must not check already completed handles */ - - timeout_ms = Curl_timeleft(data, &now, - (data->mstate <= CURLM_STATE_WAITDO)? - TRUE:FALSE); - - if(timeout_ms < 0) { - /* Handle timed out */ - if(data->mstate == CURLM_STATE_WAITRESOLVE) - failf(data, "Resolving timed out after %ld milliseconds", - Curl_tvdiff(now, data->progress.t_startsingle)); - else if(data->mstate == CURLM_STATE_WAITCONNECT) - failf(data, "Connection timed out after %ld milliseconds", - Curl_tvdiff(now, data->progress.t_startsingle)); - else { - k = &data->req; - if(k->size != -1) { - failf(data, "Operation timed out after %ld milliseconds with %" - CURL_FORMAT_CURL_OFF_T " out of %" - CURL_FORMAT_CURL_OFF_T " bytes received", - Curl_tvdiff(k->now, data->progress.t_startsingle), - k->bytecount, k->size); - } - else { - failf(data, "Operation timed out after %ld milliseconds with %" - CURL_FORMAT_CURL_OFF_T " bytes received", - Curl_tvdiff(now, data->progress.t_startsingle), - k->bytecount); - } - } - - /* Force the connection closed because the server could continue to - send us stuff at any time. (The disconnect_conn logic used below - doesn't work at this point). */ - connclose(data->easy_conn, "Disconnected with pending data"); - data->result = CURLE_OPERATION_TIMEDOUT; - multistate(data, CURLM_STATE_COMPLETED); - break; - } - } - - switch(data->mstate) { - case CURLM_STATE_INIT: - /* init this transfer. */ - data->result=Curl_pretransfer(data); - - if(CURLE_OK == data->result) { - /* after init, go CONNECT */ - multistate(data, CURLM_STATE_CONNECT); - Curl_pgrsTime(data, TIMER_STARTOP); - result = CURLM_CALL_MULTI_PERFORM; - } - break; - - case CURLM_STATE_CONNECT_PEND: - /* We will stay here until there is a connection available. Then - we try again in the CURLM_STATE_CONNECT state. */ - break; - - case CURLM_STATE_CONNECT: - /* Connect. We want to get a connection identifier filled in. */ - Curl_pgrsTime(data, TIMER_STARTSINGLE); - data->result = Curl_connect(data, &data->easy_conn, - &async, &protocol_connect); - if(CURLE_NO_CONNECTION_AVAILABLE == data->result) { - /* There was no connection available. We will go to the pending - state and wait for an available connection. */ - multistate(data, CURLM_STATE_CONNECT_PEND); - - /* add this handle to the list of connect-pending handles */ - if(!Curl_llist_insert_next(multi->pending, multi->pending->tail, data)) - data->result = CURLE_OUT_OF_MEMORY; - else - data->result = CURLE_OK; - break; - } - - if(CURLE_OK == data->result) { - /* Add this handle to the send or pend pipeline */ - data->result = Curl_add_handle_to_pipeline(data, data->easy_conn); - if(CURLE_OK != data->result) - disconnect_conn = TRUE; - else { - if(async) - /* We're now waiting for an asynchronous name lookup */ - multistate(data, CURLM_STATE_WAITRESOLVE); - else { - /* after the connect has been sent off, go WAITCONNECT unless the - protocol connect is already done and we can go directly to - WAITDO or DO! */ - result = CURLM_CALL_MULTI_PERFORM; - - if(protocol_connect) - multistate(data, multi->pipelining_enabled? - CURLM_STATE_WAITDO:CURLM_STATE_DO); - else { -#ifndef CURL_DISABLE_HTTP - if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT) - multistate(data, CURLM_STATE_WAITPROXYCONNECT); - else -#endif - multistate(data, CURLM_STATE_WAITCONNECT); - } - } - } - } - break; - - case CURLM_STATE_WAITRESOLVE: - /* awaiting an asynch name resolve to complete */ - { - struct Curl_dns_entry *dns = NULL; - struct connectdata *conn = data->easy_conn; - int stale; - - /* check if we have the name resolved by now */ - if(data->share) - Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE); - - dns = Curl_fetch_addr(conn, conn->host.name, (int)conn->port, &stale); - - if(dns) { - dns->inuse++; /* we use it! */ -#ifdef CURLRES_ASYNCH - conn->async.dns = dns; - conn->async.done = TRUE; -#endif - data->result = CURLRESOLV_RESOLVED; - infof(data, "Hostname was found in DNS cache\n"); - } - if(stale) - infof(data, "Hostname in DNS cache was stale, zapped\n"); - - if(data->share) - Curl_share_unlock(data, CURL_LOCK_DATA_DNS); - - if(!dns) - data->result = Curl_resolver_is_resolved(data->easy_conn, &dns); - - /* Update sockets here, because the socket(s) may have been - closed and the application thus needs to be told, even if it - is likely that the same socket(s) will again be used further - down. If the name has not yet been resolved, it is likely - that new sockets have been opened in an attempt to contact - another resolver. */ - singlesocket(multi, data); - - if(dns) { - /* Perform the next step in the connection phase, and then move on - to the WAITCONNECT state */ - data->result = Curl_async_resolved(data->easy_conn, - &protocol_connect); - - if(CURLE_OK != data->result) - /* if Curl_async_resolved() returns failure, the connection struct - is already freed and gone */ - data->easy_conn = NULL; /* no more connection */ - else { - /* call again please so that we get the next socket setup */ - result = CURLM_CALL_MULTI_PERFORM; - if(protocol_connect) - multistate(data, multi->pipelining_enabled? - CURLM_STATE_WAITDO:CURLM_STATE_DO); - else { -#ifndef CURL_DISABLE_HTTP - if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT) - multistate(data, CURLM_STATE_WAITPROXYCONNECT); - else -#endif - multistate(data, CURLM_STATE_WAITCONNECT); - } - } - } - - if(CURLE_OK != data->result) { - /* failure detected */ - disconnect_conn = TRUE; - break; - } - } - break; - -#ifndef CURL_DISABLE_HTTP - case CURLM_STATE_WAITPROXYCONNECT: - /* this is HTTP-specific, but sending CONNECT to a proxy is HTTP... */ - data->result = Curl_http_connect(data->easy_conn, &protocol_connect); - - if(data->easy_conn->bits.proxy_connect_closed) { - /* connect back to proxy again */ - data->result = CURLE_OK; - result = CURLM_CALL_MULTI_PERFORM; - multistate(data, CURLM_STATE_CONNECT); - } - else if(CURLE_OK == data->result) { - if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_COMPLETE) - multistate(data, CURLM_STATE_WAITCONNECT); - } - break; -#endif - - case CURLM_STATE_WAITCONNECT: - /* awaiting a completion of an asynch connect */ - data->result = Curl_is_connected(data->easy_conn, - FIRSTSOCKET, - &connected); - if(connected) { - - if(!data->result) - /* if everything is still fine we do the protocol-specific connect - setup */ - data->result = Curl_protocol_connect(data->easy_conn, - &protocol_connect); - } - - if(data->easy_conn->bits.proxy_connect_closed) { - /* connect back to proxy again since it was closed in a proxy CONNECT - setup */ - data->result = CURLE_OK; - result = CURLM_CALL_MULTI_PERFORM; - multistate(data, CURLM_STATE_CONNECT); - break; - } - else if(CURLE_OK != data->result) { - /* failure detected */ - /* Just break, the cleaning up is handled all in one place */ - disconnect_conn = TRUE; - break; - } - - if(connected) { - if(!protocol_connect) { - /* We have a TCP connection, but 'protocol_connect' may be false - and then we continue to 'STATE_PROTOCONNECT'. If protocol - connect is TRUE, we move on to STATE_DO. - BUT if we are using a proxy we must change to WAITPROXYCONNECT - */ -#ifndef CURL_DISABLE_HTTP - if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT) - multistate(data, CURLM_STATE_WAITPROXYCONNECT); - else -#endif - multistate(data, CURLM_STATE_PROTOCONNECT); - - } - else - /* after the connect has completed, go WAITDO or DO */ - multistate(data, multi->pipelining_enabled? - CURLM_STATE_WAITDO:CURLM_STATE_DO); - - result = CURLM_CALL_MULTI_PERFORM; - } - break; - - case CURLM_STATE_PROTOCONNECT: - /* protocol-specific connect phase */ - data->result = Curl_protocol_connecting(data->easy_conn, - &protocol_connect); - if((data->result == CURLE_OK) && protocol_connect) { - /* after the connect has completed, go WAITDO or DO */ - multistate(data, multi->pipelining_enabled? - CURLM_STATE_WAITDO:CURLM_STATE_DO); - result = CURLM_CALL_MULTI_PERFORM; - } - else if(data->result) { - /* failure detected */ - Curl_posttransfer(data); - Curl_done(&data->easy_conn, data->result, TRUE); - disconnect_conn = TRUE; - } - break; - - case CURLM_STATE_WAITDO: - /* Wait for our turn to DO when we're pipelining requests */ -#ifdef DEBUGBUILD - infof(data, "WAITDO: Conn %ld send pipe %zu inuse %s athead %s\n", - data->easy_conn->connection_id, - data->easy_conn->send_pipe->size, - data->easy_conn->writechannel_inuse?"TRUE":"FALSE", - isHandleAtHead(data, - data->easy_conn->send_pipe)?"TRUE":"FALSE"); -#endif - if(!data->easy_conn->writechannel_inuse && - isHandleAtHead(data, - data->easy_conn->send_pipe)) { - /* Grab the channel */ - data->easy_conn->writechannel_inuse = TRUE; - multistate(data, CURLM_STATE_DO); - result = CURLM_CALL_MULTI_PERFORM; - } - break; - - case CURLM_STATE_DO: - if(data->set.connect_only) { - /* keep connection open for application to use the socket */ - connkeep(data->easy_conn, "CONNECT_ONLY"); - multistate(data, CURLM_STATE_DONE); - data->result = CURLE_OK; - result = CURLM_CALL_MULTI_PERFORM; - } - else { - /* Perform the protocol's DO action */ - data->result = Curl_do(&data->easy_conn, &dophase_done); - - /* When Curl_do() returns failure, data->easy_conn might be NULL! */ - - if(CURLE_OK == data->result) { - if(!dophase_done) { - /* some steps needed for wildcard matching */ - if(data->set.wildcardmatch) { - struct WildcardData *wc = &data->wildcard; - if(wc->state == CURLWC_DONE || wc->state == CURLWC_SKIP) { - /* skip some states if it is important */ - Curl_done(&data->easy_conn, CURLE_OK, FALSE); - multistate(data, CURLM_STATE_DONE); - result = CURLM_CALL_MULTI_PERFORM; - break; - } - } - /* DO was not completed in one function call, we must continue - DOING... */ - multistate(data, CURLM_STATE_DOING); - result = CURLM_OK; - } - - /* after DO, go DO_DONE... or DO_MORE */ - else if(data->easy_conn->bits.do_more) { - /* we're supposed to do more, but we need to sit down, relax - and wait a little while first */ - multistate(data, CURLM_STATE_DO_MORE); - result = CURLM_OK; - } - else { - /* we're done with the DO, now DO_DONE */ - multistate(data, CURLM_STATE_DO_DONE); - result = CURLM_CALL_MULTI_PERFORM; - } - } - else if((CURLE_SEND_ERROR == data->result) && - data->easy_conn->bits.reuse) { - /* - * In this situation, a connection that we were trying to use - * may have unexpectedly died. If possible, send the connection - * back to the CONNECT phase so we can try again. - */ - char *newurl = NULL; - followtype follow=FOLLOW_NONE; - CURLcode drc; - bool retry = FALSE; - - drc = Curl_retry_request(data->easy_conn, &newurl); - if(drc) { - /* a failure here pretty much implies an out of memory */ - data->result = drc; - disconnect_conn = TRUE; - } - else - retry = (newurl)?TRUE:FALSE; - - Curl_posttransfer(data); - drc = Curl_done(&data->easy_conn, data->result, FALSE); - - /* When set to retry the connection, we must to go back to - * the CONNECT state */ - if(retry) { - if((drc == CURLE_OK) || (drc == CURLE_SEND_ERROR)) { - follow = FOLLOW_RETRY; - drc = Curl_follow(data, newurl, follow); - if(drc == CURLE_OK) { - multistate(data, CURLM_STATE_CONNECT); - result = CURLM_CALL_MULTI_PERFORM; - data->result = CURLE_OK; - } - else { - /* Follow failed */ - data->result = drc; - free(newurl); - } - } - else { - /* done didn't return OK or SEND_ERROR */ - data->result = drc; - free(newurl); - } - } - else { - /* Have error handler disconnect conn if we can't retry */ - disconnect_conn = TRUE; - } - } - else { - /* failure detected */ - Curl_posttransfer(data); - if(data->easy_conn) - Curl_done(&data->easy_conn, data->result, FALSE); - disconnect_conn = TRUE; - } - } - break; - - case CURLM_STATE_DOING: - /* we continue DOING until the DO phase is complete */ - data->result = Curl_protocol_doing(data->easy_conn, - &dophase_done); - if(CURLE_OK == data->result) { - if(dophase_done) { - /* after DO, go DO_DONE or DO_MORE */ - multistate(data, data->easy_conn->bits.do_more? - CURLM_STATE_DO_MORE: - CURLM_STATE_DO_DONE); - result = CURLM_CALL_MULTI_PERFORM; - } /* dophase_done */ - } - else { - /* failure detected */ - Curl_posttransfer(data); - Curl_done(&data->easy_conn, data->result, FALSE); - disconnect_conn = TRUE; - } - break; - - case CURLM_STATE_DO_MORE: - /* - * When we are connected, DO MORE and then go DO_DONE - */ - data->result = Curl_do_more(data->easy_conn, &control); - - /* No need to remove this handle from the send pipeline here since that - is done in Curl_done() */ - if(CURLE_OK == data->result) { - if(control) { - /* if positive, advance to DO_DONE - if negative, go back to DOING */ - multistate(data, control==1? - CURLM_STATE_DO_DONE: - CURLM_STATE_DOING); - result = CURLM_CALL_MULTI_PERFORM; - } - else - /* stay in DO_MORE */ - result = CURLM_OK; - } - else { - /* failure detected */ - Curl_posttransfer(data); - Curl_done(&data->easy_conn, data->result, FALSE); - disconnect_conn = TRUE; - } - break; - - case CURLM_STATE_DO_DONE: - /* Move ourselves from the send to recv pipeline */ - Curl_move_handle_from_send_to_recv_pipe(data, data->easy_conn); - /* Check if we can move pending requests to send pipe */ - Curl_multi_process_pending_handles(multi); - - /* Only perform the transfer if there's a good socket to work with. - Having both BAD is a signal to skip immediately to DONE */ - if((data->easy_conn->sockfd != CURL_SOCKET_BAD) || - (data->easy_conn->writesockfd != CURL_SOCKET_BAD)) - multistate(data, CURLM_STATE_WAITPERFORM); - else - multistate(data, CURLM_STATE_DONE); - result = CURLM_CALL_MULTI_PERFORM; - break; - - case CURLM_STATE_WAITPERFORM: - /* Wait for our turn to PERFORM */ - if(!data->easy_conn->readchannel_inuse && - isHandleAtHead(data, - data->easy_conn->recv_pipe)) { - /* Grab the channel */ - data->easy_conn->readchannel_inuse = TRUE; - multistate(data, CURLM_STATE_PERFORM); - result = CURLM_CALL_MULTI_PERFORM; - } -#ifdef DEBUGBUILD - else { - infof(data, "WAITPERFORM: Conn %ld recv pipe %zu inuse %s athead %s\n", - data->easy_conn->connection_id, - data->easy_conn->recv_pipe->size, - data->easy_conn->readchannel_inuse?"TRUE":"FALSE", - isHandleAtHead(data, - data->easy_conn->recv_pipe)?"TRUE":"FALSE"); - } -#endif - break; - - case CURLM_STATE_TOOFAST: /* limit-rate exceeded in either direction */ - /* if both rates are within spec, resume transfer */ - if(Curl_pgrsUpdate(data->easy_conn)) - data->result = CURLE_ABORTED_BY_CALLBACK; - else - data->result = Curl_speedcheck(data, now); - - if(( (data->set.max_send_speed == 0) || - (data->progress.ulspeed < data->set.max_send_speed )) && - ( (data->set.max_recv_speed == 0) || - (data->progress.dlspeed < data->set.max_recv_speed))) - multistate(data, CURLM_STATE_PERFORM); - break; - - case CURLM_STATE_PERFORM: - { - char *newurl = NULL; - bool retry = FALSE; - - /* check if over send speed */ - if((data->set.max_send_speed > 0) && - (data->progress.ulspeed > data->set.max_send_speed)) { - int buffersize; - - multistate(data, CURLM_STATE_TOOFAST); - - /* calculate upload rate-limitation timeout. */ - buffersize = (int)(data->set.buffer_size ? - data->set.buffer_size : BUFSIZE); - timeout_ms = Curl_sleep_time(data->set.max_send_speed, - data->progress.ulspeed, buffersize); - Curl_expire_latest(data, timeout_ms); - break; - } - - /* check if over recv speed */ - if((data->set.max_recv_speed > 0) && - (data->progress.dlspeed > data->set.max_recv_speed)) { - int buffersize; - - multistate(data, CURLM_STATE_TOOFAST); - - /* Calculate download rate-limitation timeout. */ - buffersize = (int)(data->set.buffer_size ? - data->set.buffer_size : BUFSIZE); - timeout_ms = Curl_sleep_time(data->set.max_recv_speed, - data->progress.dlspeed, buffersize); - Curl_expire_latest(data, timeout_ms); - break; - } - - /* read/write data if it is ready to do so */ - data->result = Curl_readwrite(data->easy_conn, &done); - - k = &data->req; - - if(!(k->keepon & KEEP_RECV)) { - /* We're done receiving */ - data->easy_conn->readchannel_inuse = FALSE; - } - - if(!(k->keepon & KEEP_SEND)) { - /* We're done sending */ - data->easy_conn->writechannel_inuse = FALSE; - } - - if(done || (data->result == CURLE_RECV_ERROR)) { - /* If CURLE_RECV_ERROR happens early enough, we assume it was a race - * condition and the server closed the re-used connection exactly when - * we wanted to use it, so figure out if that is indeed the case. - */ - CURLcode ret = Curl_retry_request(data->easy_conn, &newurl); - if(!ret) - retry = (newurl)?TRUE:FALSE; - - if(retry) { - /* if we are to retry, set the result to OK and consider the - request as done */ - data->result = CURLE_OK; - done = TRUE; - } - } - - if(data->result) { - /* - * The transfer phase returned error, we mark the connection to get - * closed to prevent being re-used. This is because we can't possibly - * know if the connection is in a good shape or not now. Unless it is - * a protocol which uses two "channels" like FTP, as then the error - * happened in the data connection. - */ - - if(!(data->easy_conn->handler->flags & PROTOPT_DUAL)) - connclose(data->easy_conn, "Transfer returned error"); - - Curl_posttransfer(data); - Curl_done(&data->easy_conn, data->result, FALSE); - } - else if(done) { - followtype follow=FOLLOW_NONE; - - /* call this even if the readwrite function returned error */ - Curl_posttransfer(data); - - /* we're no longer receiving */ - Curl_removeHandleFromPipeline(data, data->easy_conn->recv_pipe); - - /* expire the new receiving pipeline head */ - if(data->easy_conn->recv_pipe->head) - Curl_expire_latest(data->easy_conn->recv_pipe->head->ptr, 1); - - /* Check if we can move pending requests to send pipe */ - Curl_multi_process_pending_handles(multi); - - /* When we follow redirects or is set to retry the connection, we must - to go back to the CONNECT state */ - if(data->req.newurl || retry) { - if(!retry) { - /* if the URL is a follow-location and not just a retried request - then figure out the URL here */ - newurl = data->req.newurl; - data->req.newurl = NULL; - follow = FOLLOW_REDIR; - } - else - follow = FOLLOW_RETRY; - data->result = Curl_done(&data->easy_conn, CURLE_OK, FALSE); - if(CURLE_OK == data->result) { - data->result = Curl_follow(data, newurl, follow); - if(CURLE_OK == data->result) { - multistate(data, CURLM_STATE_CONNECT); - result = CURLM_CALL_MULTI_PERFORM; - newurl = NULL; /* handed over the memory ownership to - Curl_follow(), make sure we don't free() it - here */ - } - } - } - else { - /* after the transfer is done, go DONE */ - - /* but first check to see if we got a location info even though we're - not following redirects */ - if(data->req.location) { - if(newurl) - free(newurl); - newurl = data->req.location; - data->req.location = NULL; - data->result = Curl_follow(data, newurl, FOLLOW_FAKE); - if(CURLE_OK == data->result) - newurl = NULL; /* allocation was handed over Curl_follow() */ - else - disconnect_conn = TRUE; - } - - multistate(data, CURLM_STATE_DONE); - result = CURLM_CALL_MULTI_PERFORM; - } - } - - if(newurl) - free(newurl); - break; - } - - case CURLM_STATE_DONE: - /* this state is highly transient, so run another loop after this */ - result = CURLM_CALL_MULTI_PERFORM; - - if(data->easy_conn) { - CURLcode res; - - /* Remove ourselves from the receive pipeline, if we are there. */ - Curl_removeHandleFromPipeline(data, data->easy_conn->recv_pipe); - /* Check if we can move pending requests to send pipe */ - Curl_multi_process_pending_handles(multi); - - /* post-transfer command */ - res = Curl_done(&data->easy_conn, data->result, FALSE); - - /* allow a previously set error code take precedence */ - if(!data->result) - data->result = res; - - /* - * If there are other handles on the pipeline, Curl_done won't set - * easy_conn to NULL. In such a case, curl_multi_remove_handle() can - * access free'd data, if the connection is free'd and the handle - * removed before we perform the processing in CURLM_STATE_COMPLETED - */ - if(data->easy_conn) - data->easy_conn = NULL; - } - - if(data->set.wildcardmatch) { - if(data->wildcard.state != CURLWC_DONE) { - /* if a wildcard is set and we are not ending -> lets start again - with CURLM_STATE_INIT */ - multistate(data, CURLM_STATE_INIT); - break; - } - } - - /* after we have DONE what we're supposed to do, go COMPLETED, and - it doesn't matter what the Curl_done() returned! */ - multistate(data, CURLM_STATE_COMPLETED); - break; - - case CURLM_STATE_COMPLETED: - /* this is a completed transfer, it is likely to still be connected */ - - /* This node should be delinked from the list now and we should post - an information message that we are complete. */ - - /* Important: reset the conn pointer so that we don't point to memory - that could be freed anytime */ - data->easy_conn = NULL; - - Curl_expire(data, 0); /* stop all timers */ - break; - - case CURLM_STATE_MSGSENT: - return CURLM_OK; /* do nothing */ - - default: - return CURLM_INTERNAL_ERROR; - } - - if(data->mstate < CURLM_STATE_COMPLETED) { - if(CURLE_OK != data->result) { - /* - * If an error was returned, and we aren't in completed state now, - * then we go to completed and consider this transfer aborted. - */ - - /* NOTE: no attempt to disconnect connections must be made - in the case blocks above - cleanup happens only here */ - - data->state.pipe_broke = FALSE; - - if(data->easy_conn) { - /* if this has a connection, unsubscribe from the pipelines */ - data->easy_conn->writechannel_inuse = FALSE; - data->easy_conn->readchannel_inuse = FALSE; - Curl_removeHandleFromPipeline(data, - data->easy_conn->send_pipe); - Curl_removeHandleFromPipeline(data, - data->easy_conn->recv_pipe); - /* Check if we can move pending requests to send pipe */ - Curl_multi_process_pending_handles(multi); - - if(disconnect_conn) { - /* disconnect properly */ - Curl_disconnect(data->easy_conn, /* dead_connection */ FALSE); - - /* This is where we make sure that the easy_conn pointer is reset. - We don't have to do this in every case block above where a - failure is detected */ - data->easy_conn = NULL; - } - } - else if(data->mstate == CURLM_STATE_CONNECT) { - /* Curl_connect() failed */ - (void)Curl_posttransfer(data); - } - - multistate(data, CURLM_STATE_COMPLETED); - } - /* if there's still a connection to use, call the progress function */ - else if(data->easy_conn && Curl_pgrsUpdate(data->easy_conn)) { - /* aborted due to progress callback return code must close the - connection */ - data->result = CURLE_ABORTED_BY_CALLBACK; - connclose(data->easy_conn, "Aborted by callback"); - - /* if not yet in DONE state, go there, otherwise COMPLETED */ - multistate(data, (data->mstate < CURLM_STATE_DONE)? - CURLM_STATE_DONE: CURLM_STATE_COMPLETED); - result = CURLM_CALL_MULTI_PERFORM; - } - } - } WHILE_FALSE; /* just to break out from! */ - - if(CURLM_STATE_COMPLETED == data->mstate) { - /* now fill in the Curl_message with this info */ - msg = &data->msg; - - msg->extmsg.msg = CURLMSG_DONE; - msg->extmsg.easy_handle = data; - msg->extmsg.data.result = data->result; - - result = multi_addmsg(multi, msg); - - multistate(data, CURLM_STATE_MSGSENT); - } - - return result; -} - - -CURLMcode curl_multi_perform(CURLM *multi_handle, int *running_handles) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *data; - CURLMcode returncode=CURLM_OK; - struct Curl_tree *t; - struct timeval now = Curl_tvnow(); - - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - data=multi->easyp; - while(data) { - CURLMcode result; - struct WildcardData *wc = &data->wildcard; - SIGPIPE_VARIABLE(pipe_st); - - if(data->set.wildcardmatch) { - if(!wc->filelist) { - CURLcode ret = Curl_wildcard_init(wc); /* init wildcard structures */ - if(ret) - return CURLM_OUT_OF_MEMORY; - } - } - - sigpipe_ignore(data, &pipe_st); - do - result = multi_runsingle(multi, now, data); - while(CURLM_CALL_MULTI_PERFORM == result); - sigpipe_restore(&pipe_st); - - if(data->set.wildcardmatch) { - /* destruct wildcard structures if it is needed */ - if(wc->state == CURLWC_DONE || result) - Curl_wildcard_dtor(wc); - } - - if(result) - returncode = result; - - data = data->next; /* operate on next handle */ - } - - /* - * Simply remove all expired timers from the splay since handles are dealt - * with unconditionally by this function and curl_multi_timeout() requires - * that already passed/handled expire times are removed from the splay. - * - * It is important that the 'now' value is set at the entry of this function - * and not for the current time as it may have ticked a little while since - * then and then we risk this loop to remove timers that actually have not - * been handled! - */ - do { - multi->timetree = Curl_splaygetbest(now, multi->timetree, &t); - if(t) - /* the removed may have another timeout in queue */ - (void)add_next_timeout(now, multi, t->payload); - - } while(t); - - *running_handles = multi->num_alive; - - if(CURLM_OK >= returncode) - update_timer(multi); - - return returncode; -} - -static void close_all_connections(struct Curl_multi *multi) -{ - struct connectdata *conn; - - conn = Curl_conncache_find_first_connection(multi->conn_cache); - while(conn) { - SIGPIPE_VARIABLE(pipe_st); - conn->data = multi->closure_handle; - - sigpipe_ignore(conn->data, &pipe_st); - /* This will remove the connection from the cache */ - (void)Curl_disconnect(conn, FALSE); - sigpipe_restore(&pipe_st); - - conn = Curl_conncache_find_first_connection(multi->conn_cache); - } -} - -CURLMcode curl_multi_cleanup(CURLM *multi_handle) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *data; - struct SessionHandle *nextdata; - - if(GOOD_MULTI_HANDLE(multi)) { - bool restore_pipe = FALSE; - SIGPIPE_VARIABLE(pipe_st); - - multi->type = 0; /* not good anymore */ - - /* Close all the connections in the connection cache */ - close_all_connections(multi); - - if(multi->closure_handle) { - sigpipe_ignore(multi->closure_handle, &pipe_st); - restore_pipe = TRUE; - - multi->closure_handle->dns.hostcache = multi->hostcache; - Curl_hostcache_clean(multi->closure_handle, - multi->closure_handle->dns.hostcache); - - Curl_close(multi->closure_handle); - } - - Curl_hash_destroy(multi->sockhash); - Curl_conncache_destroy(multi->conn_cache); - Curl_llist_destroy(multi->msglist, NULL); - Curl_llist_destroy(multi->pending, NULL); - - /* remove all easy handles */ - data = multi->easyp; - while(data) { - nextdata=data->next; - if(data->dns.hostcachetype == HCACHE_MULTI) { - /* clear out the usage of the shared DNS cache */ - Curl_hostcache_clean(data, data->dns.hostcache); - data->dns.hostcache = NULL; - data->dns.hostcachetype = HCACHE_NONE; - } - - /* Clear the pointer to the connection cache */ - data->state.conn_cache = NULL; - data->multi = NULL; /* clear the association */ - - data = nextdata; - } - - Curl_hash_destroy(multi->hostcache); - - /* Free the blacklists by setting them to NULL */ - Curl_pipeline_set_site_blacklist(NULL, &multi->pipelining_site_bl); - Curl_pipeline_set_server_blacklist(NULL, &multi->pipelining_server_bl); - - free(multi); - if(restore_pipe) - sigpipe_restore(&pipe_st); - - return CURLM_OK; - } - else - return CURLM_BAD_HANDLE; -} - -/* - * curl_multi_info_read() - * - * This function is the primary way for a multi/multi_socket application to - * figure out if a transfer has ended. We MUST make this function as fast as - * possible as it will be polled frequently and we MUST NOT scan any lists in - * here to figure out things. We must scale fine to thousands of handles and - * beyond. The current design is fully O(1). - */ - -CURLMsg *curl_multi_info_read(CURLM *multi_handle, int *msgs_in_queue) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct Curl_message *msg; - - *msgs_in_queue = 0; /* default to none */ - - if(GOOD_MULTI_HANDLE(multi) && Curl_llist_count(multi->msglist)) { - /* there is one or more messages in the list */ - struct curl_llist_element *e; - - /* extract the head of the list to return */ - e = multi->msglist->head; - - msg = e->ptr; - - /* remove the extracted entry */ - Curl_llist_remove(multi->msglist, e, NULL); - - *msgs_in_queue = curlx_uztosi(Curl_llist_count(multi->msglist)); - - return &msg->extmsg; - } - else - return NULL; -} - -/* - * singlesocket() checks what sockets we deal with and their "action state" - * and if we have a different state in any of those sockets from last time we - * call the callback accordingly. - */ -static void singlesocket(struct Curl_multi *multi, - struct SessionHandle *data) -{ - curl_socket_t socks[MAX_SOCKSPEREASYHANDLE]; - int i; - struct Curl_sh_entry *entry; - curl_socket_t s; - int num; - unsigned int curraction; - bool remove_sock_from_hash; - - for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) - socks[i] = CURL_SOCKET_BAD; - - /* Fill in the 'current' struct with the state as it is now: what sockets to - supervise and for what actions */ - curraction = multi_getsock(data, socks, MAX_SOCKSPEREASYHANDLE); - - /* We have 0 .. N sockets already and we get to know about the 0 .. M - sockets we should have from now on. Detect the differences, remove no - longer supervised ones and add new ones */ - - /* walk over the sockets we got right now */ - for(i=0; (i< MAX_SOCKSPEREASYHANDLE) && - (curraction & (GETSOCK_READSOCK(i) | GETSOCK_WRITESOCK(i))); - i++) { - int action = CURL_POLL_NONE; - - s = socks[i]; - - /* get it from the hash */ - entry = Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(s)); - - if(curraction & GETSOCK_READSOCK(i)) - action |= CURL_POLL_IN; - if(curraction & GETSOCK_WRITESOCK(i)) - action |= CURL_POLL_OUT; - - if(entry) { - /* yeps, already present so check if it has the same action set */ - if(entry->action == action) - /* same, continue */ - continue; - } - else { - /* this is a socket we didn't have before, add it! */ - entry = sh_addentry(multi->sockhash, s, data); - if(!entry) - /* fatal */ - return; - } - - /* we know (entry != NULL) at this point, see the logic above */ - if(multi->socket_cb) - multi->socket_cb(data, - s, - action, - multi->socket_userp, - entry->socketp); - - entry->action = action; /* store the current action state */ - } - - num = i; /* number of sockets */ - - /* when we've walked over all the sockets we should have right now, we must - make sure to detect sockets that are removed */ - for(i=0; i< data->numsocks; i++) { - int j; - s = data->sockets[i]; - for(j=0; j<num; j++) { - if(s == socks[j]) { - /* this is still supervised */ - s = CURL_SOCKET_BAD; - break; - } - } - if(s != CURL_SOCKET_BAD) { - - /* this socket has been removed. Tell the app to remove it */ - remove_sock_from_hash = TRUE; - - entry = Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(s)); - if(entry) { - /* check if the socket to be removed serves a connection which has - other easy-s in a pipeline. In this case the socket should not be - removed. */ - struct connectdata *easy_conn = data->easy_conn; - if(easy_conn) { - if(easy_conn->recv_pipe && easy_conn->recv_pipe->size > 1) { - /* the handle should not be removed from the pipe yet */ - remove_sock_from_hash = FALSE; - - /* Update the sockhash entry to instead point to the next in line - for the recv_pipe, or the first (in case this particular easy - isn't already) */ - if(entry->easy == data) { - if(isHandleAtHead(data, easy_conn->recv_pipe)) - entry->easy = easy_conn->recv_pipe->head->next->ptr; - else - entry->easy = easy_conn->recv_pipe->head->ptr; - } - } - if(easy_conn->send_pipe && easy_conn->send_pipe->size > 1) { - /* the handle should not be removed from the pipe yet */ - remove_sock_from_hash = FALSE; - - /* Update the sockhash entry to instead point to the next in line - for the send_pipe, or the first (in case this particular easy - isn't already) */ - if(entry->easy == data) { - if(isHandleAtHead(data, easy_conn->send_pipe)) - entry->easy = easy_conn->send_pipe->head->next->ptr; - else - entry->easy = easy_conn->send_pipe->head->ptr; - } - } - /* Don't worry about overwriting recv_pipe head with send_pipe_head, - when action will be asked on the socket (see multi_socket()), the - head of the correct pipe will be taken according to the - action. */ - } - } - else - /* just a precaution, this socket really SHOULD be in the hash already - but in case it isn't, we don't have to tell the app to remove it - either since it never got to know about it */ - remove_sock_from_hash = FALSE; - - if(remove_sock_from_hash) { - /* in this case 'entry' is always non-NULL */ - if(multi->socket_cb) - multi->socket_cb(data, - s, - CURL_POLL_REMOVE, - multi->socket_userp, - entry->socketp); - sh_delentry(multi->sockhash, s); - } - - } - } - - memcpy(data->sockets, socks, num*sizeof(curl_socket_t)); - data->numsocks = num; -} - -/* - * Curl_multi_closed() - * - * Used by the connect code to tell the multi_socket code that one of the - * sockets we were using have just been closed. This function will then - * remove it from the sockethash for this handle to make the multi_socket API - * behave properly, especially for the case when libcurl will create another - * socket again and it gets the same file descriptor number. - */ - -void Curl_multi_closed(struct connectdata *conn, curl_socket_t s) -{ - struct Curl_multi *multi = conn->data->multi; - if(multi) { - /* this is set if this connection is part of a handle that is added to - a multi handle, and only then this is necessary */ - struct Curl_sh_entry *entry = - Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(s)); - - if(entry) { - if(multi->socket_cb) - multi->socket_cb(conn->data, s, CURL_POLL_REMOVE, - multi->socket_userp, - entry->socketp); - - /* now remove it from the socket hash */ - sh_delentry(multi->sockhash, s); - } - } -} - - - -/* - * add_next_timeout() - * - * Each SessionHandle has a list of timeouts. The add_next_timeout() is called - * when it has just been removed from the splay tree because the timeout has - * expired. This function is then to advance in the list to pick the next - * timeout to use (skip the already expired ones) and add this node back to - * the splay tree again. - * - * The splay tree only has each sessionhandle as a single node and the nearest - * timeout is used to sort it on. - */ -static CURLMcode add_next_timeout(struct timeval now, - struct Curl_multi *multi, - struct SessionHandle *d) -{ - struct timeval *tv = &d->state.expiretime; - struct curl_llist *list = d->state.timeoutlist; - struct curl_llist_element *e; - - /* move over the timeout list for this specific handle and remove all - timeouts that are now passed tense and store the next pending - timeout in *tv */ - for(e = list->head; e; ) { - struct curl_llist_element *n = e->next; - long diff = curlx_tvdiff(*(struct timeval *)e->ptr, now); - if(diff <= 0) - /* remove outdated entry */ - Curl_llist_remove(list, e, NULL); - else - /* the list is sorted so get out on the first mismatch */ - break; - e = n; - } - e = list->head; - if(!e) { - /* clear the expire times within the handles that we remove from the - splay tree */ - tv->tv_sec = 0; - tv->tv_usec = 0; - } - else { - /* copy the first entry to 'tv' */ - memcpy(tv, e->ptr, sizeof(*tv)); - - /* remove first entry from list */ - Curl_llist_remove(list, e, NULL); - - /* insert this node again into the splay */ - multi->timetree = Curl_splayinsert(*tv, multi->timetree, - &d->state.timenode); - } - return CURLM_OK; -} - -static CURLMcode multi_socket(struct Curl_multi *multi, - bool checkall, - curl_socket_t s, - int ev_bitmask, - int *running_handles) -{ - CURLMcode result = CURLM_OK; - struct SessionHandle *data = NULL; - struct Curl_tree *t; - struct timeval now = Curl_tvnow(); - - if(checkall) { - /* *perform() deals with running_handles on its own */ - result = curl_multi_perform(multi, running_handles); - - /* walk through each easy handle and do the socket state change magic - and callbacks */ - if(result != CURLM_BAD_HANDLE) { - data=multi->easyp; - while(data) { - singlesocket(multi, data); - data = data->next; - } - } - - /* or should we fall-through and do the timer-based stuff? */ - return result; - } - else if(s != CURL_SOCKET_TIMEOUT) { - - struct Curl_sh_entry *entry = - Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(s)); - - if(!entry) - /* Unmatched socket, we can't act on it but we ignore this fact. In - real-world tests it has been proved that libevent can in fact give - the application actions even though the socket was just previously - asked to get removed, so thus we better survive stray socket actions - and just move on. */ - ; - else { - SIGPIPE_VARIABLE(pipe_st); - - data = entry->easy; - - if(data->magic != CURLEASY_MAGIC_NUMBER) - /* bad bad bad bad bad bad bad */ - return CURLM_INTERNAL_ERROR; - - /* If the pipeline is enabled, take the handle which is in the head of - the pipeline. If we should write into the socket, take the send_pipe - head. If we should read from the socket, take the recv_pipe head. */ - if(data->easy_conn) { - if((ev_bitmask & CURL_POLL_OUT) && - data->easy_conn->send_pipe && - data->easy_conn->send_pipe->head) - data = data->easy_conn->send_pipe->head->ptr; - else if((ev_bitmask & CURL_POLL_IN) && - data->easy_conn->recv_pipe && - data->easy_conn->recv_pipe->head) - data = data->easy_conn->recv_pipe->head->ptr; - } - - if(data->easy_conn && - !(data->easy_conn->handler->flags & PROTOPT_DIRLOCK)) - /* set socket event bitmask if they're not locked */ - data->easy_conn->cselect_bits = ev_bitmask; - - sigpipe_ignore(data, &pipe_st); - do - result = multi_runsingle(multi, now, data); - while(CURLM_CALL_MULTI_PERFORM == result); - sigpipe_restore(&pipe_st); - - if(data->easy_conn && - !(data->easy_conn->handler->flags & PROTOPT_DIRLOCK)) - /* clear the bitmask only if not locked */ - data->easy_conn->cselect_bits = 0; - - if(CURLM_OK >= result) - /* get the socket(s) and check if the state has been changed since - last */ - singlesocket(multi, data); - - /* Now we fall-through and do the timer-based stuff, since we don't want - to force the user to have to deal with timeouts as long as at least - one connection in fact has traffic. */ - - data = NULL; /* set data to NULL again to avoid calling - multi_runsingle() in case there's no need to */ - now = Curl_tvnow(); /* get a newer time since the multi_runsingle() loop - may have taken some time */ - } - } - else { - /* Asked to run due to time-out. Clear the 'lastcall' variable to force - update_timer() to trigger a callback to the app again even if the same - timeout is still the one to run after this call. That handles the case - when the application asks libcurl to run the timeout prematurely. */ - memset(&multi->timer_lastcall, 0, sizeof(multi->timer_lastcall)); - } - - /* - * The loop following here will go on as long as there are expire-times left - * to process in the splay and 'data' will be re-assigned for every expired - * handle we deal with. - */ - do { - /* the first loop lap 'data' can be NULL */ - if(data) { - SIGPIPE_VARIABLE(pipe_st); - - sigpipe_ignore(data, &pipe_st); - do - result = multi_runsingle(multi, now, data); - while(CURLM_CALL_MULTI_PERFORM == result); - sigpipe_restore(&pipe_st); - - if(CURLM_OK >= result) - /* get the socket(s) and check if the state has been changed since - last */ - singlesocket(multi, data); - } - - /* Check if there's one (more) expired timer to deal with! This function - extracts a matching node if there is one */ - - multi->timetree = Curl_splaygetbest(now, multi->timetree, &t); - if(t) { - data = t->payload; /* assign this for next loop */ - (void)add_next_timeout(now, multi, t->payload); - } - - } while(t); - - *running_handles = multi->num_alive; - return result; -} - -#undef curl_multi_setopt -CURLMcode curl_multi_setopt(CURLM *multi_handle, - CURLMoption option, ...) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - CURLMcode res = CURLM_OK; - va_list param; - - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - va_start(param, option); - - switch(option) { - case CURLMOPT_SOCKETFUNCTION: - multi->socket_cb = va_arg(param, curl_socket_callback); - break; - case CURLMOPT_SOCKETDATA: - multi->socket_userp = va_arg(param, void *); - break; - case CURLMOPT_PIPELINING: - multi->pipelining_enabled = (0 != va_arg(param, long)) ? TRUE : FALSE; - break; - case CURLMOPT_TIMERFUNCTION: - multi->timer_cb = va_arg(param, curl_multi_timer_callback); - break; - case CURLMOPT_TIMERDATA: - multi->timer_userp = va_arg(param, void *); - break; - case CURLMOPT_MAXCONNECTS: - multi->maxconnects = va_arg(param, long); - break; - case CURLMOPT_MAX_HOST_CONNECTIONS: - multi->max_host_connections = va_arg(param, long); - break; - case CURLMOPT_MAX_PIPELINE_LENGTH: - multi->max_pipeline_length = va_arg(param, long); - break; - case CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE: - multi->content_length_penalty_size = va_arg(param, long); - break; - case CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE: - multi->chunk_length_penalty_size = va_arg(param, long); - break; - case CURLMOPT_PIPELINING_SITE_BL: - res = Curl_pipeline_set_site_blacklist(va_arg(param, char **), - &multi->pipelining_site_bl); - break; - case CURLMOPT_PIPELINING_SERVER_BL: - res = Curl_pipeline_set_server_blacklist(va_arg(param, char **), - &multi->pipelining_server_bl); - break; - case CURLMOPT_MAX_TOTAL_CONNECTIONS: - multi->max_total_connections = va_arg(param, long); - break; - default: - res = CURLM_UNKNOWN_OPTION; - break; - } - va_end(param); - return res; -} - -/* we define curl_multi_socket() in the public multi.h header */ -#undef curl_multi_socket - -CURLMcode curl_multi_socket(CURLM *multi_handle, curl_socket_t s, - int *running_handles) -{ - CURLMcode result = multi_socket((struct Curl_multi *)multi_handle, FALSE, s, - 0, running_handles); - if(CURLM_OK >= result) - update_timer((struct Curl_multi *)multi_handle); - return result; -} - -CURLMcode curl_multi_socket_action(CURLM *multi_handle, curl_socket_t s, - int ev_bitmask, int *running_handles) -{ - CURLMcode result = multi_socket((struct Curl_multi *)multi_handle, FALSE, s, - ev_bitmask, running_handles); - if(CURLM_OK >= result) - update_timer((struct Curl_multi *)multi_handle); - return result; -} - -CURLMcode curl_multi_socket_all(CURLM *multi_handle, int *running_handles) - -{ - CURLMcode result = multi_socket((struct Curl_multi *)multi_handle, - TRUE, CURL_SOCKET_BAD, 0, running_handles); - if(CURLM_OK >= result) - update_timer((struct Curl_multi *)multi_handle); - return result; -} - -static CURLMcode multi_timeout(struct Curl_multi *multi, - long *timeout_ms) -{ - static struct timeval tv_zero = {0,0}; - - if(multi->timetree) { - /* we have a tree of expire times */ - struct timeval now = Curl_tvnow(); - - /* splay the lowest to the bottom */ - multi->timetree = Curl_splay(tv_zero, multi->timetree); - - if(Curl_splaycomparekeys(multi->timetree->key, now) > 0) { - /* some time left before expiration */ - *timeout_ms = curlx_tvdiff(multi->timetree->key, now); - if(!*timeout_ms) - /* - * Since we only provide millisecond resolution on the returned value - * and the diff might be less than one millisecond here, we don't - * return zero as that may cause short bursts of busyloops on fast - * processors while the diff is still present but less than one - * millisecond! instead we return 1 until the time is ripe. - */ - *timeout_ms=1; - } - else - /* 0 means immediately */ - *timeout_ms = 0; - } - else - *timeout_ms = -1; - - return CURLM_OK; -} - -CURLMcode curl_multi_timeout(CURLM *multi_handle, - long *timeout_ms) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - - /* First, make some basic checks that the CURLM handle is a good handle */ - if(!GOOD_MULTI_HANDLE(multi)) - return CURLM_BAD_HANDLE; - - return multi_timeout(multi, timeout_ms); -} - -/* - * Tell the application it should update its timers, if it subscribes to the - * update timer callback. - */ -static int update_timer(struct Curl_multi *multi) -{ - long timeout_ms; - - if(!multi->timer_cb) - return 0; - if(multi_timeout(multi, &timeout_ms)) { - return -1; - } - if(timeout_ms < 0) { - static const struct timeval none={0,0}; - if(Curl_splaycomparekeys(none, multi->timer_lastcall)) { - multi->timer_lastcall = none; - /* there's no timeout now but there was one previously, tell the app to - disable it */ - return multi->timer_cb((CURLM*)multi, -1, multi->timer_userp); - } - return 0; - } - - /* When multi_timeout() is done, multi->timetree points to the node with the - * timeout we got the (relative) time-out time for. We can thus easily check - * if this is the same (fixed) time as we got in a previous call and then - * avoid calling the callback again. */ - if(Curl_splaycomparekeys(multi->timetree->key, multi->timer_lastcall) == 0) - return 0; - - multi->timer_lastcall = multi->timetree->key; - - return multi->timer_cb((CURLM*)multi, timeout_ms, multi->timer_userp); -} - -void Curl_multi_set_easy_connection(struct SessionHandle *handle, - struct connectdata *conn) -{ - handle->easy_conn = conn; -} - -static bool isHandleAtHead(struct SessionHandle *handle, - struct curl_llist *pipeline) -{ - struct curl_llist_element *curr = pipeline->head; - if(curr) - return (curr->ptr == handle) ? TRUE : FALSE; - - return FALSE; -} - -/* - * multi_freetimeout() - * - * Callback used by the llist system when a single timeout list entry is - * destroyed. - */ -static void multi_freetimeout(void *user, void *entryptr) -{ - (void)user; - - /* the entry was plain malloc()'ed */ - free(entryptr); -} - -/* - * multi_addtimeout() - * - * Add a timestamp to the list of timeouts. Keep the list sorted so that head - * of list is always the timeout nearest in time. - * - */ -static CURLMcode -multi_addtimeout(struct curl_llist *timeoutlist, - struct timeval *stamp) -{ - struct curl_llist_element *e; - struct timeval *timedup; - struct curl_llist_element *prev = NULL; - - timedup = malloc(sizeof(*timedup)); - if(!timedup) - return CURLM_OUT_OF_MEMORY; - - /* copy the timestamp */ - memcpy(timedup, stamp, sizeof(*timedup)); - - if(Curl_llist_count(timeoutlist)) { - /* find the correct spot in the list */ - for(e = timeoutlist->head; e; e = e->next) { - struct timeval *checktime = e->ptr; - long diff = curlx_tvdiff(*checktime, *timedup); - if(diff > 0) - break; - prev = e; - } - - } - /* else - this is the first timeout on the list */ - - if(!Curl_llist_insert_next(timeoutlist, prev, timedup)) { - free(timedup); - return CURLM_OUT_OF_MEMORY; - } - - return CURLM_OK; -} - -/* - * Curl_expire() - * - * given a number of milliseconds from now to use to set the 'act before - * this'-time for the transfer, to be extracted by curl_multi_timeout() - * - * Note that the timeout will be added to a queue of timeouts if it defines a - * moment in time that is later than the current head of queue. - * - * Pass zero to clear all timeout values for this handle. -*/ -void Curl_expire(struct SessionHandle *data, long milli) -{ - struct Curl_multi *multi = data->multi; - struct timeval *nowp = &data->state.expiretime; - int rc; - - /* this is only interesting while there is still an associated multi struct - remaining! */ - if(!multi) - return; - - if(!milli) { - /* No timeout, clear the time data. */ - if(nowp->tv_sec || nowp->tv_usec) { - /* Since this is an cleared time, we must remove the previous entry from - the splay tree */ - struct curl_llist *list = data->state.timeoutlist; - - rc = Curl_splayremovebyaddr(multi->timetree, - &data->state.timenode, - &multi->timetree); - if(rc) - infof(data, "Internal error clearing splay node = %d\n", rc); - - /* flush the timeout list too */ - while(list->size > 0) - Curl_llist_remove(list, list->tail, NULL); - -#ifdef DEBUGBUILD - infof(data, "Expire cleared\n"); -#endif - nowp->tv_sec = 0; - nowp->tv_usec = 0; - } - } - else { - struct timeval set; - - set = Curl_tvnow(); - set.tv_sec += milli/1000; - set.tv_usec += (milli%1000)*1000; - - if(set.tv_usec >= 1000000) { - set.tv_sec++; - set.tv_usec -= 1000000; - } - - if(nowp->tv_sec || nowp->tv_usec) { - /* This means that the struct is added as a node in the splay tree. - Compare if the new time is earlier, and only remove-old/add-new if it - is. */ - long diff = curlx_tvdiff(set, *nowp); - if(diff > 0) { - /* the new expire time was later so just add it to the queue - and get out */ - multi_addtimeout(data->state.timeoutlist, &set); - return; - } - - /* the new time is newer than the presently set one, so add the current - to the queue and update the head */ - multi_addtimeout(data->state.timeoutlist, nowp); - - /* Since this is an updated time, we must remove the previous entry from - the splay tree first and then re-add the new value */ - rc = Curl_splayremovebyaddr(multi->timetree, - &data->state.timenode, - &multi->timetree); - if(rc) - infof(data, "Internal error removing splay node = %d\n", rc); - } - - *nowp = set; - data->state.timenode.payload = data; - multi->timetree = Curl_splayinsert(*nowp, - multi->timetree, - &data->state.timenode); - } -#if 0 - Curl_splayprint(multi->timetree, 0, TRUE); -#endif -} - -/* - * Curl_expire_latest() - * - * This is like Curl_expire() but will only add a timeout node to the list of - * timers if there is no timeout that will expire before the given time. - * - * Use this function if the code logic risks calling this function many times - * or if there's no particular conditional wait in the code for this specific - * time-out period to expire. - * - */ -void Curl_expire_latest(struct SessionHandle *data, long milli) -{ - struct timeval *exp = &data->state.expiretime; - - struct timeval set; - - set = Curl_tvnow(); - set.tv_sec += milli/1000; - set.tv_usec += (milli%1000)*1000; - - if(set.tv_usec >= 1000000) { - set.tv_sec++; - set.tv_usec -= 1000000; - } - - if(exp->tv_sec || exp->tv_usec) { - /* This means that the struct is added as a node in the splay tree. - Compare if the new time is earlier, and only remove-old/add-new if it - is. */ - long diff = curlx_tvdiff(set, *exp); - if(diff > 0) - /* the new expire time was later than the top time, so just skip this */ - return; - } - - /* Just add the timeout like normal */ - Curl_expire(data, milli); -} - -CURLMcode curl_multi_assign(CURLM *multi_handle, - curl_socket_t s, void *hashp) -{ - struct Curl_sh_entry *there = NULL; - struct Curl_multi *multi = (struct Curl_multi *)multi_handle; - - if(s != CURL_SOCKET_BAD) - there = Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(curl_socket_t)); - - if(!there) - return CURLM_BAD_SOCKET; - - there->socketp = hashp; - - return CURLM_OK; -} - -size_t Curl_multi_max_host_connections(struct Curl_multi *multi) -{ - return multi ? multi->max_host_connections : 0; -} - -size_t Curl_multi_max_total_connections(struct Curl_multi *multi) -{ - return multi ? multi->max_total_connections : 0; -} - -size_t Curl_multi_max_pipeline_length(struct Curl_multi *multi) -{ - return multi ? multi->max_pipeline_length : 0; -} - -curl_off_t Curl_multi_content_length_penalty_size(struct Curl_multi *multi) -{ - return multi ? multi->content_length_penalty_size : 0; -} - -curl_off_t Curl_multi_chunk_length_penalty_size(struct Curl_multi *multi) -{ - return multi ? multi->chunk_length_penalty_size : 0; -} - -struct curl_llist *Curl_multi_pipelining_site_bl(struct Curl_multi *multi) -{ - return multi->pipelining_site_bl; -} - -struct curl_llist *Curl_multi_pipelining_server_bl(struct Curl_multi *multi) -{ - return multi->pipelining_server_bl; -} - -void Curl_multi_process_pending_handles(struct Curl_multi *multi) -{ - struct curl_llist_element *e = multi->pending->head; - - while(e) { - struct SessionHandle *data = e->ptr; - struct curl_llist_element *next = e->next; - - if(data->mstate == CURLM_STATE_CONNECT_PEND) { - multistate(data, CURLM_STATE_CONNECT); - - /* Remove this node from the list */ - Curl_llist_remove(multi->pending, e, NULL); - - /* Make sure that the handle will be processed soonish. */ - Curl_expire_latest(data, 1); - } - - e = next; /* operate on next handle */ - } -} - -#ifdef DEBUGBUILD -void Curl_multi_dump(const struct Curl_multi *multi_handle) -{ - struct Curl_multi *multi=(struct Curl_multi *)multi_handle; - struct SessionHandle *data; - int i; - fprintf(stderr, "* Multi status: %d handles, %d alive\n", - multi->num_easy, multi->num_alive); - for(data=multi->easyp; data; data = data->next) { - if(data->mstate < CURLM_STATE_COMPLETED) { - /* only display handles that are not completed */ - fprintf(stderr, "handle %p, state %s, %d sockets\n", - (void *)data, - statename[data->mstate], data->numsocks); - for(i=0; i < data->numsocks; i++) { - curl_socket_t s = data->sockets[i]; - struct Curl_sh_entry *entry = - Curl_hash_pick(multi->sockhash, (char *)&s, sizeof(s)); - - fprintf(stderr, "%d ", (int)s); - if(!entry) { - fprintf(stderr, "INTERNAL CONFUSION\n"); - continue; - } - fprintf(stderr, "[%s %s] ", - entry->action&CURL_POLL_IN?"RECVING":"", - entry->action&CURL_POLL_OUT?"SENDING":""); - } - if(data->numsocks) - fprintf(stderr, "\n"); - } - } -} -#endif |