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-rw-r--r--app/nginx/src/event/ngx_event_acceptex.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/app/nginx/src/event/ngx_event_acceptex.c b/app/nginx/src/event/ngx_event_acceptex.c
new file mode 100644
index 0000000..1999faf
--- /dev/null
+++ b/app/nginx/src/event/ngx_event_acceptex.c
@@ -0,0 +1,227 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+
+
+static void ngx_close_posted_connection(ngx_connection_t *c);
+
+
+void
+ngx_event_acceptex(ngx_event_t *rev)
+{
+ ngx_listening_t *ls;
+ ngx_connection_t *c;
+
+ c = rev->data;
+ ls = c->listening;
+
+ c->log->handler = ngx_accept_log_error;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "AcceptEx: %d", c->fd);
+
+ if (rev->ovlp.error) {
+ ngx_log_error(NGX_LOG_CRIT, c->log, rev->ovlp.error,
+ "AcceptEx() %V failed", &ls->addr_text);
+ return;
+ }
+
+ /* SO_UPDATE_ACCEPT_CONTEXT is required for shutdown() to work */
+
+ if (setsockopt(c->fd, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
+ (char *) &ls->fd, sizeof(ngx_socket_t))
+ == -1)
+ {
+ ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
+ "setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed for %V",
+ &c->addr_text);
+ /* TODO: close socket */
+ return;
+ }
+
+ ngx_getacceptexsockaddrs(c->buffer->pos,
+ ls->post_accept_buffer_size,
+ ls->socklen + 16,
+ ls->socklen + 16,
+ &c->local_sockaddr, &c->local_socklen,
+ &c->sockaddr, &c->socklen);
+
+ if (ls->post_accept_buffer_size) {
+ c->buffer->last += rev->available;
+ c->buffer->end = c->buffer->start + ls->post_accept_buffer_size;
+
+ } else {
+ c->buffer = NULL;
+ }
+
+ if (ls->addr_ntop) {
+ c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len);
+ if (c->addr_text.data == NULL) {
+ /* TODO: close socket */
+ return;
+ }
+
+ c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen,
+ c->addr_text.data,
+ ls->addr_text_max_len, 0);
+ if (c->addr_text.len == 0) {
+ /* TODO: close socket */
+ return;
+ }
+ }
+
+ ngx_event_post_acceptex(ls, 1);
+
+ c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
+
+ ls->handler(c);
+
+ return;
+
+}
+
+
+ngx_int_t
+ngx_event_post_acceptex(ngx_listening_t *ls, ngx_uint_t n)
+{
+ u_long rcvd;
+ ngx_err_t err;
+ ngx_log_t *log;
+ ngx_uint_t i;
+ ngx_event_t *rev, *wev;
+ ngx_socket_t s;
+ ngx_connection_t *c;
+
+ for (i = 0; i < n; i++) {
+
+ /* TODO: look up reused sockets */
+
+ s = ngx_socket(ls->sockaddr->sa_family, ls->type, 0);
+
+ ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &ls->log, 0,
+ ngx_socket_n " s:%d", s);
+
+ if (s == (ngx_socket_t) -1) {
+ ngx_log_error(NGX_LOG_ALERT, &ls->log, ngx_socket_errno,
+ ngx_socket_n " failed");
+
+ return NGX_ERROR;
+ }
+
+ c = ngx_get_connection(s, &ls->log);
+
+ if (c == NULL) {
+ return NGX_ERROR;
+ }
+
+ c->pool = ngx_create_pool(ls->pool_size, &ls->log);
+ if (c->pool == NULL) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ log = ngx_palloc(c->pool, sizeof(ngx_log_t));
+ if (log == NULL) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ c->buffer = ngx_create_temp_buf(c->pool, ls->post_accept_buffer_size
+ + 2 * (ls->socklen + 16));
+ if (c->buffer == NULL) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ c->local_sockaddr = ngx_palloc(c->pool, ls->socklen);
+ if (c->local_sockaddr == NULL) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ c->sockaddr = ngx_palloc(c->pool, ls->socklen);
+ if (c->sockaddr == NULL) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ *log = ls->log;
+ c->log = log;
+
+ c->recv = ngx_recv;
+ c->send = ngx_send;
+ c->recv_chain = ngx_recv_chain;
+ c->send_chain = ngx_send_chain;
+
+ c->listening = ls;
+
+ rev = c->read;
+ wev = c->write;
+
+ rev->ovlp.event = rev;
+ wev->ovlp.event = wev;
+ rev->handler = ngx_event_acceptex;
+
+ rev->ready = 1;
+ wev->ready = 1;
+
+ rev->log = c->log;
+ wev->log = c->log;
+
+ if (ngx_add_event(rev, 0, NGX_IOCP_IO) == NGX_ERROR) {
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+
+ if (ngx_acceptex(ls->fd, s, c->buffer->pos, ls->post_accept_buffer_size,
+ ls->socklen + 16, ls->socklen + 16,
+ &rcvd, (LPOVERLAPPED) &rev->ovlp)
+ == 0)
+ {
+ err = ngx_socket_errno;
+ if (err != WSA_IO_PENDING) {
+ ngx_log_error(NGX_LOG_ALERT, &ls->log, err,
+ "AcceptEx() %V failed", &ls->addr_text);
+
+ ngx_close_posted_connection(c);
+ return NGX_ERROR;
+ }
+ }
+ }
+
+ return NGX_OK;
+}
+
+
+static void
+ngx_close_posted_connection(ngx_connection_t *c)
+{
+ ngx_socket_t fd;
+
+ ngx_free_connection(c);
+
+ fd = c->fd;
+ c->fd = (ngx_socket_t) -1;
+
+ if (ngx_close_socket(fd) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
+ ngx_close_socket_n " failed");
+ }
+
+ if (c->pool) {
+ ngx_destroy_pool(c->pool);
+ }
+}
+
+
+u_char *
+ngx_acceptex_log_error(ngx_log_t *log, u_char *buf, size_t len)
+{
+ return ngx_snprintf(buf, len, " while posting AcceptEx() on %V", log->data);
+}