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+#ifndef HEADER_CURL_HTTP_H
+#define HEADER_CURL_HTTP_H
+/***************************************************************************
+ * _ _ ____ _
+ * 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"
+
+#ifndef CURL_DISABLE_HTTP
+
+#ifdef USE_NGHTTP2
+#include <nghttp2/nghttp2.h>
+#endif
+
+extern const struct Curl_handler Curl_handler_http;
+
+#ifdef USE_SSL
+extern const struct Curl_handler Curl_handler_https;
+#endif
+
+/* Header specific functions */
+bool Curl_compareheader(const char *headerline, /* line to check */
+ const char *header, /* header keyword _with_ colon */
+ const char *content); /* content string to find */
+
+char *Curl_checkheaders(const struct connectdata *conn,
+ const char *thisheader);
+char *Curl_copy_header_value(const char *header);
+
+char *Curl_checkProxyheaders(const struct connectdata *conn,
+ const char *thisheader);
+/* ------------------------------------------------------------------------- */
+/*
+ * The add_buffer series of functions are used to build one large memory chunk
+ * from repeated function invokes. Used so that the entire HTTP request can
+ * be sent in one go.
+ */
+struct Curl_send_buffer {
+ char *buffer;
+ size_t size_max;
+ size_t size_used;
+};
+typedef struct Curl_send_buffer Curl_send_buffer;
+
+Curl_send_buffer *Curl_add_buffer_init(void);
+CURLcode Curl_add_bufferf(Curl_send_buffer *in, const char *fmt, ...);
+CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size);
+CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
+ struct connectdata *conn,
+ long *bytes_written,
+ size_t included_body_bytes,
+ int socketindex);
+
+CURLcode Curl_add_timecondition(struct SessionHandle *data,
+ Curl_send_buffer *buf);
+CURLcode Curl_add_custom_headers(struct connectdata *conn,
+ bool is_connect,
+ Curl_send_buffer *req_buffer);
+
+/* protocol-specific functions set up to be called by the main engine */
+CURLcode Curl_http(struct connectdata *conn, bool *done);
+CURLcode Curl_http_done(struct connectdata *, CURLcode, bool premature);
+CURLcode Curl_http_connect(struct connectdata *conn, bool *done);
+CURLcode Curl_http_setup_conn(struct connectdata *conn);
+
+/* The following functions are defined in http_chunks.c */
+void Curl_httpchunk_init(struct connectdata *conn);
+CHUNKcode Curl_httpchunk_read(struct connectdata *conn, char *datap,
+ ssize_t length, ssize_t *wrote);
+
+/* These functions are in http.c */
+void Curl_http_auth_stage(struct SessionHandle *data, int stage);
+CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
+ const char *auth);
+CURLcode Curl_http_auth_act(struct connectdata *conn);
+CURLcode Curl_http_perhapsrewind(struct connectdata *conn);
+
+/* If only the PICKNONE bit is set, there has been a round-trip and we
+ selected to use no auth at all. Ie, we actively select no auth, as opposed
+ to not having one selected. The other CURLAUTH_* defines are present in the
+ public curl/curl.h header. */
+#define CURLAUTH_PICKNONE (1<<30) /* don't use auth */
+
+/* MAX_INITIAL_POST_SIZE indicates the number of bytes that will make the POST
+ data get included in the initial data chunk sent to the server. If the
+ data is larger than this, it will automatically get split up in multiple
+ system calls.
+
+ This value used to be fairly big (100K), but we must take into account that
+ if the server rejects the POST due for authentication reasons, this data
+ will always be uncondtionally sent and thus it may not be larger than can
+ always be afforded to send twice.
+
+ It must not be greater than 64K to work on VMS.
+*/
+#ifndef MAX_INITIAL_POST_SIZE
+#define MAX_INITIAL_POST_SIZE (64*1024)
+#endif
+
+#ifndef TINY_INITIAL_POST_SIZE
+#define TINY_INITIAL_POST_SIZE 1024
+#endif
+
+#endif /* CURL_DISABLE_HTTP */
+
+/****************************************************************************
+ * HTTP unique setup
+ ***************************************************************************/
+struct HTTP {
+ struct FormData *sendit;
+ curl_off_t postsize; /* off_t to handle large file sizes */
+ const char *postdata;
+
+ const char *p_pragma; /* Pragma: string */
+ const char *p_accept; /* Accept: string */
+ curl_off_t readbytecount;
+ curl_off_t writebytecount;
+
+ /* For FORM posting */
+ struct Form form;
+
+ struct back {
+ curl_read_callback fread_func; /* backup storage for fread pointer */
+ void *fread_in; /* backup storage for fread_in pointer */
+ const char *postdata;
+ curl_off_t postsize;
+ } backup;
+
+ enum {
+ HTTPSEND_NADA, /* init */
+ HTTPSEND_REQUEST, /* sending a request */
+ HTTPSEND_BODY, /* sending body */
+ HTTPSEND_LAST /* never use this */
+ } sending;
+
+ void *send_buffer; /* used if the request couldn't be sent in one chunk,
+ points to an allocated send_buffer struct */
+};
+
+typedef int (*sending)(void); /* Curl_send */
+typedef int (*recving)(void); /* Curl_recv */
+
+struct http_conn {
+#ifdef USE_NGHTTP2
+#define H2_BINSETTINGS_LEN 80
+ nghttp2_session *h2;
+ uint8_t binsettings[H2_BINSETTINGS_LEN];
+ size_t binlen; /* length of the binsettings data */
+ char *mem; /* points to a buffer in memory to store */
+ size_t len; /* size of the buffer 'mem' points to */
+ bool bodystarted;
+ sending send_underlying; /* underlying send Curl_send callback */
+ recving recv_underlying; /* underlying recv Curl_recv callback */
+ bool closed; /* TRUE on HTTP2 stream close */
+ Curl_send_buffer *header_recvbuf; /* store response headers. We
+ store non-final and final
+ response headers into it. */
+ size_t nread_header_recvbuf; /* number of bytes in header_recvbuf
+ fed into upper layer */
+ int32_t stream_id; /* stream we are interested in */
+ const uint8_t *data; /* pointer to data chunk, received in
+ on_data_chunk */
+ size_t datalen; /* the number of bytes left in data */
+ char *inbuf; /* buffer to receive data from underlying socket */
+ /* We need separate buffer for transmission and reception because we
+ may call nghttp2_session_send() after the
+ nghttp2_session_mem_recv() but mem buffer is still not full. In
+ this case, we wrongly sends the content of mem buffer if we share
+ them for both cases. */
+ const uint8_t *upload_mem; /* points to a buffer to read from */
+ size_t upload_len; /* size of the buffer 'upload_mem' points to */
+ size_t upload_left; /* number of bytes left to upload */
+ int status_code; /* HTTP status code */
+#else
+ int unused; /* prevent a compiler warning */
+#endif
+};
+
+CURLcode Curl_http_readwrite_headers(struct SessionHandle *data,
+ struct connectdata *conn,
+ ssize_t *nread,
+ bool *stop_reading);
+
+/**
+ * Curl_http_output_auth() setups the authentication headers for the
+ * host/proxy and the correct authentication
+ * method. conn->data->state.authdone is set to TRUE when authentication is
+ * done.
+ *
+ * @param conn all information about the current connection
+ * @param request pointer to the request keyword
+ * @param path pointer to the requested path
+ * @param proxytunnel boolean if this is the request setting up a "proxy
+ * tunnel"
+ *
+ * @returns CURLcode
+ */
+CURLcode
+Curl_http_output_auth(struct connectdata *conn,
+ const char *request,
+ const char *path,
+ bool proxytunnel); /* TRUE if this is the request setting
+ up the proxy tunnel */
+
+#endif /* HEADER_CURL_HTTP_H */
+