2013-09-03 17:17:06 -04:00
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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2014-01-29 16:50:25 -05:00
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* Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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2013-09-03 17:17:06 -04:00
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifdef USE_NGHTTP2
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2013-09-06 07:56:35 -04:00
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#define _MPRINTF_REPLACE
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#include <curl/mprintf.h>
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2013-09-03 17:17:06 -04:00
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#include <nghttp2/nghttp2.h>
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2013-09-07 05:03:23 -04:00
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#include "urldata.h"
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2013-09-03 17:17:06 -04:00
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#include "http2.h"
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2013-09-07 05:03:23 -04:00
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#include "http.h"
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2013-09-07 07:01:43 -04:00
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#include "sendf.h"
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#include "curl_base64.h"
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2013-09-07 13:47:26 -04:00
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#include "curl_memory.h"
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2013-09-07 07:01:43 -04:00
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/* include memdebug.h last */
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#include "memdebug.h"
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2013-09-03 17:17:06 -04:00
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2014-01-29 16:53:08 -05:00
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#if (NGHTTP2_VERSION_NUM < 0x000300)
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#error too old nghttp2 version, upgrade!
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#endif
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2013-09-12 07:51:04 -04:00
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/*
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* HTTP2 handler interface. This isn't added to the general list of protocols
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* but will be used at run-time when the protocol is dynamically switched from
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* HTTP to HTTP2.
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*/
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const struct Curl_handler Curl_handler_http2 = {
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"HTTP2", /* scheme */
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ZERO_NULL, /* setup_connection */
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ZERO_NULL, /* do_it */
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ZERO_NULL , /* done */
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ZERO_NULL, /* do_more */
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ZERO_NULL, /* connect_it */
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ZERO_NULL, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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ZERO_NULL, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_HTTP, /* defport */
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2014-01-30 09:58:07 -05:00
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CURLPROTO_HTTP, /* protocol */
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2013-09-12 07:51:04 -04:00
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PROTOPT_NONE /* flags */
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};
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2013-09-03 17:17:06 -04:00
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/*
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* Store nghttp2 version info in this buffer, Prefix with a space. Return
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* total length written.
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*/
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int Curl_http2_ver(char *p, size_t len)
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{
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nghttp2_info *h2 = nghttp2_version(0);
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return snprintf(p, len, " nghttp2/%s", h2->version_str);
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}
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2013-09-07 07:01:43 -04:00
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/*
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* The implementation of nghttp2_send_callback type. Here we write |data| with
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* size |length| to the network and return the number of bytes actually
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* written. See the documentation of nghttp2_send_callback for the details.
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*/
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static ssize_t send_callback(nghttp2_session *h2,
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const uint8_t *data, size_t length, int flags,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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ssize_t written;
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CURLcode rc =
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2014-01-29 17:47:24 -05:00
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Curl_write(conn, conn->sock[FIRSTSOCKET], data, length, &written);
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2013-09-07 07:01:43 -04:00
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(void)h2;
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(void)flags;
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if(rc) {
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failf(conn->data, "Failed sending HTTP2 data");
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return NGHTTP2_ERR_CALLBACK_FAILURE;
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}
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else if(!written)
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return NGHTTP2_ERR_WOULDBLOCK;
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return written;
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}
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2014-01-29 18:11:56 -05:00
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static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "on_frame_recv() was called with header %x\n",
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frame->hd.type);
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return 0;
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}
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static int on_invalid_frame_recv(nghttp2_session *session,
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const nghttp2_frame *frame,
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nghttp2_error_code error_code, void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "on_invalid_frame_recv() was called, error_code = %d\n",
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error_code);
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return 0;
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}
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static int on_data_chunk_recv(nghttp2_session *session, uint8_t flags,
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int32_t stream_id,
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const uint8_t *data, size_t len, void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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2014-01-30 10:09:36 -05:00
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struct http_conn *c = &conn->proto.httpc;
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2014-01-29 18:11:56 -05:00
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(void)session;
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(void)flags;
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(void)data;
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2014-01-30 10:09:36 -05:00
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infof(conn->data, "on_data_chunk_recv() "
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"len = %u, stream = %x\n", len, stream_id);
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if(len < c->len) {
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memcpy(c->mem, data, len);
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c->mem += len;
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c->len -= len;
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}
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else {
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infof(conn->data, "EEEEEEK\n");
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}
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2014-01-29 18:11:56 -05:00
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return 0;
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}
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static int before_frame_send(nghttp2_session *session,
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const nghttp2_frame *frame,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "before_frame_send() was called\n");
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return 0;
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}
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static int on_frame_send(nghttp2_session *session,
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const nghttp2_frame *frame,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "on_frame_send() was called\n");
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return 0;
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}
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static int on_frame_not_send(nghttp2_session *session,
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const nghttp2_frame *frame,
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int lib_error_code, void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "on_frame_not_send() was called, lib_error_code = %d\n",
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lib_error_code);
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return 0;
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}
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static int on_stream_close(nghttp2_session *session, int32_t stream_id,
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nghttp2_error_code error_code, void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)stream_id;
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infof(conn->data, "on_stream_close() was called, error_code = %d\n",
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error_code);
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return 0;
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}
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static int on_unknown_frame_recv(nghttp2_session *session,
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const uint8_t *head, size_t headlen,
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const uint8_t *payload, size_t payloadlen,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)head;
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(void)headlen;
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(void)payload;
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(void)payloadlen;
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infof(conn->data, "on_unknown_frame_recv() was called\n");
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return 0;
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}
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static int on_begin_headers(nghttp2_session *session,
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const nghttp2_frame *frame, void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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(void)session;
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(void)frame;
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infof(conn->data, "on_begin_headers() was called\n");
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return 0;
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}
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2014-01-29 17:45:24 -05:00
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/* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */
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2014-01-29 18:11:56 -05:00
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static int on_header(nghttp2_session *session, const nghttp2_frame *frame,
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2014-01-29 17:45:24 -05:00
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const uint8_t *name, size_t namelen,
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const uint8_t *value, size_t valuelen,
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void *userp)
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{
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struct connectdata *conn = (struct connectdata *)userp;
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2014-01-30 09:58:07 -05:00
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struct http_conn *c = &conn->proto.httpc;
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size_t hlen = namelen + valuelen + 3; /* colon + CRLF == 3 bytes */
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2014-01-29 17:45:24 -05:00
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(void)session;
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(void)frame;
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2014-01-30 09:58:07 -05:00
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if(namelen && (name[0] == ':')) {
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/* special case */
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hlen = snprintf(c->mem, c->len, "HTTP/2.0 %s\r\n", value);
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2014-01-29 17:45:24 -05:00
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}
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2014-01-30 09:58:07 -05:00
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else if(hlen + 1 < c->len) { /* hlen + a zero byte */
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/* convert to a HTTP1-style header */
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memcpy(c->mem, name, namelen);
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c->mem[namelen]=':';
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memcpy(&c->mem[namelen+1], value, valuelen);
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c->mem[namelen + valuelen + 1]='\r';
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c->mem[namelen + valuelen + 2]='\n';
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c->mem[namelen + valuelen + 3]=0; /* to display this easier */
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2014-01-29 17:45:24 -05:00
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}
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2014-01-30 09:58:07 -05:00
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infof(conn->data, "Got %s", c->mem);
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c->mem += hlen;
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c->len -= hlen;
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2014-01-29 17:45:24 -05:00
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return 0; /* 0 is successful */
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}
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2013-09-07 07:01:43 -04:00
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/*
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* This is all callbacks nghttp2 calls
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*/
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static const nghttp2_session_callbacks callbacks = {
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2014-01-29 18:11:56 -05:00
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send_callback, /* nghttp2_send_callback */
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2014-01-30 09:26:20 -05:00
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NULL, /* nghttp2_recv_callback */
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2014-01-29 18:11:56 -05:00
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on_frame_recv, /* nghttp2_on_frame_recv_callback */
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on_invalid_frame_recv, /* nghttp2_on_invalid_frame_recv_callback */
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on_data_chunk_recv, /* nghttp2_on_data_chunk_recv_callback */
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before_frame_send, /* nghttp2_before_frame_send_callback */
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on_frame_send, /* nghttp2_on_frame_send_callback */
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on_frame_not_send, /* nghttp2_on_frame_not_send_callback */
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on_stream_close, /* nghttp2_on_stream_close_callback */
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on_unknown_frame_recv, /* nghttp2_on_unknown_frame_recv_callback */
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on_begin_headers, /* nghttp2_on_begin_headers_callback */
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on_header /* nghttp2_on_header_callback */
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2013-09-07 07:01:43 -04:00
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};
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/*
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* The HTTP2 settings we send in the Upgrade request
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*/
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static nghttp2_settings_entry settings[] = {
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{ NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 100 },
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{ NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, NGHTTP2_INITIAL_WINDOW_SIZE },
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};
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2014-01-30 00:28:50 -05:00
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/*
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* Initialize nghttp2 for a Curl connection
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*/
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CURLcode Curl_http2_init(struct connectdata *conn) {
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if(!conn->proto.httpc.h2) {
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/* The nghttp2 session is not yet setup, do it */
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int rc = nghttp2_session_client_new(&conn->proto.httpc.h2,
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&callbacks, conn);
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if(rc) {
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failf(conn->data, "Couldn't initialize nghttp2!");
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return CURLE_OUT_OF_MEMORY; /* most likely at least */
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}
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}
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return CURLE_OK;
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}
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/*
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* Send a request using http2
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*/
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CURLcode Curl_http2_send_request(struct connectdata *conn)
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{
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(void)conn;
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return CURLE_OK;
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}
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2013-09-07 05:03:23 -04:00
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/*
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* Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
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*/
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2014-01-30 05:32:04 -05:00
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CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
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struct connectdata *conn)
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2013-09-07 05:03:23 -04:00
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{
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2013-09-07 07:01:43 -04:00
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CURLcode result;
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ssize_t binlen;
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char *base64;
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size_t blen;
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2013-09-12 07:51:04 -04:00
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struct SingleRequest *k = &conn->data->req;
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2014-01-30 08:26:00 -05:00
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uint8_t *binsettings = conn->proto.httpc.binsettings;
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2013-09-07 07:01:43 -04:00
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2014-01-30 00:28:50 -05:00
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Curl_http2_init(conn);
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2013-09-07 07:01:43 -04:00
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/* As long as we have a fixed set of settings, we don't have to dynamically
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* figure out the base64 strings since it'll always be the same. However,
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* the settings will likely not be fixed every time in the future.
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*/
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/* this returns number of bytes it wrote */
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2014-01-30 08:26:00 -05:00
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binlen = nghttp2_pack_settings_payload(binsettings, H2_BINSETTINGS_LEN,
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2013-09-09 09:18:09 -04:00
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settings,
|
2013-09-07 07:01:43 -04:00
|
|
|
sizeof(settings)/sizeof(settings[0]));
|
|
|
|
if(!binlen) {
|
|
|
|
failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
|
|
|
|
return CURLE_FAILED_INIT;
|
|
|
|
}
|
2014-01-30 08:26:00 -05:00
|
|
|
conn->proto.httpc.binlen = binlen;
|
2013-09-07 07:01:43 -04:00
|
|
|
|
|
|
|
result = Curl_base64_encode(conn->data, (const char *)binsettings, binlen,
|
|
|
|
&base64, &blen);
|
|
|
|
if(result)
|
|
|
|
return result;
|
|
|
|
|
|
|
|
result = Curl_add_bufferf(req,
|
|
|
|
"Connection: Upgrade, HTTP2-Settings\r\n"
|
2013-09-10 17:05:04 -04:00
|
|
|
"Upgrade: %s\r\n"
|
|
|
|
"HTTP2-Settings: %s\r\n",
|
|
|
|
NGHTTP2_PROTO_VERSION_ID, base64);
|
2013-09-07 07:01:43 -04:00
|
|
|
free(base64);
|
|
|
|
|
2013-09-12 07:51:04 -04:00
|
|
|
k->upgr101 = UPGR101_REQUESTED;
|
|
|
|
|
2013-09-07 05:03:23 -04:00
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2014-01-30 09:26:20 -05:00
|
|
|
#define H2_BUFSIZE 4096
|
|
|
|
|
2013-09-18 16:43:13 -04:00
|
|
|
/*
|
|
|
|
* If the read would block (EWOULDBLOCK) we return -1. Otherwise we return
|
|
|
|
* a regular CURLcode value.
|
|
|
|
*/
|
|
|
|
static ssize_t http2_recv(struct connectdata *conn, int sockindex,
|
|
|
|
char *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
2014-01-30 09:26:20 -05:00
|
|
|
CURLcode rc;
|
|
|
|
ssize_t rv;
|
|
|
|
ssize_t nread;
|
|
|
|
char inbuf[H2_BUFSIZE];
|
|
|
|
|
2013-09-18 16:43:13 -04:00
|
|
|
(void)sockindex; /* we always do HTTP2 on sockindex 0 */
|
|
|
|
|
|
|
|
conn->proto.httpc.mem = mem;
|
2014-01-30 09:58:07 -05:00
|
|
|
conn->proto.httpc.len = len;
|
2013-09-18 16:43:13 -04:00
|
|
|
|
2014-01-30 09:26:20 -05:00
|
|
|
infof(conn->data, "http2_recv\n");
|
2013-09-18 16:43:13 -04:00
|
|
|
|
2014-01-30 09:26:20 -05:00
|
|
|
for(;;) {
|
|
|
|
rc = Curl_read_plain(conn->sock[FIRSTSOCKET], inbuf, H2_BUFSIZE, &nread);
|
|
|
|
|
|
|
|
if(rc == CURLE_AGAIN) {
|
|
|
|
*err = rc;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if(rc) {
|
|
|
|
failf(conn->data, "Failed receiving HTTP2 data");
|
|
|
|
*err = CURLE_RECV_ERROR;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
infof(conn->data, "nread=%zd\n", nread);
|
|
|
|
if(!nread) {
|
|
|
|
*err = CURLE_RECV_ERROR;
|
|
|
|
return 0; /* TODO EOF? */
|
|
|
|
}
|
|
|
|
rv = nghttp2_session_mem_recv(conn->proto.httpc.h2,
|
|
|
|
(const uint8_t *)inbuf, nread);
|
|
|
|
|
|
|
|
if(nghttp2_is_fatal((int)rv)) {
|
|
|
|
failf(conn->data, "nghttp2_session_mem_recv() returned %d:%s\n",
|
|
|
|
rv, nghttp2_strerror((int)rv));
|
|
|
|
*err = CURLE_RECV_ERROR;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if(rv < nread) {
|
|
|
|
/* Happens when NGHTTP2_ERR_PAUSE is returned from user callback */
|
|
|
|
break;
|
|
|
|
}
|
2013-09-18 16:43:13 -04:00
|
|
|
}
|
2014-01-30 09:58:07 -05:00
|
|
|
return len - conn->proto.httpc.len;
|
2013-09-18 16:43:13 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* return number of received (decrypted) bytes */
|
|
|
|
static ssize_t http2_send(struct connectdata *conn, int sockindex,
|
|
|
|
const void *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
|
|
|
/* TODO: proper implementation */
|
|
|
|
(void)conn;
|
|
|
|
(void)sockindex;
|
|
|
|
(void)mem;
|
|
|
|
(void)len;
|
|
|
|
(void)err;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-01-30 08:26:00 -05:00
|
|
|
int Curl_http2_switched(struct connectdata *conn)
|
2013-09-12 07:51:04 -04:00
|
|
|
{
|
2014-01-30 08:26:00 -05:00
|
|
|
int rc;
|
|
|
|
struct http_conn *httpc = &conn->proto.httpc;
|
2013-09-12 07:51:04 -04:00
|
|
|
/* we are switched! */
|
|
|
|
conn->handler = &Curl_handler_http2;
|
2013-09-18 16:43:13 -04:00
|
|
|
conn->recv[FIRSTSOCKET] = http2_recv;
|
|
|
|
conn->send[FIRSTSOCKET] = http2_send;
|
2013-09-12 07:51:04 -04:00
|
|
|
infof(conn->data, "We have switched to HTTP2\n");
|
2014-01-30 08:26:00 -05:00
|
|
|
|
|
|
|
/* send the SETTINGS frame (again) */
|
|
|
|
rc = nghttp2_session_upgrade(httpc->h2, httpc->binsettings, httpc->binlen,
|
|
|
|
conn);
|
|
|
|
return rc;
|
2013-09-12 07:51:04 -04:00
|
|
|
}
|
|
|
|
|
2013-09-03 17:17:06 -04:00
|
|
|
#endif
|