/* Copyright (c) 2008, Arvid Norberg All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include "libtorrent/session.hpp" #include "libtorrent/hasher.hpp" #include "libtorrent/http_parser.hpp" #include "libtorrent/thread.hpp" #include "libtorrent/thread.hpp" #include #include #include "test.hpp" #include "libtorrent/assert.hpp" #include "libtorrent/alert_types.hpp" #include "libtorrent/create_torrent.hpp" #include "libtorrent/socket_io.hpp" // print_endpoint #include "libtorrent/socket_type.hpp" #include "libtorrent/instantiate_connection.hpp" #ifdef TORRENT_USE_OPENSSL #include #include #endif using namespace libtorrent; bool tests_failure = false; void report_failure(char const* err, char const* file, int line) { #if defined TORRENT_WINDOWS && defined TORRENT_MINGW HANDLE console = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, 0, CONSOLE_TEXTMODE_BUFFER, 0); SetConsoleTextAttribute(console, FOREGROUND_RED); fprintf(stderr, "\n**** %s:%d \"%s\" ****\n\n", file, line, err); CloseHandle(console); #else fprintf(stderr, "\033[31m %s:%d \"%s\"\033[0m\n", file, line, err); #endif tests_failure = true; } bool print_alerts(libtorrent::session& ses, char const* name , bool allow_disconnects, bool allow_no_torrents, bool allow_failed_fastresume , bool (*predicate)(libtorrent::alert*), bool no_output) { bool ret = false; std::vector handles = ses.get_torrents(); TEST_CHECK(!handles.empty() || allow_no_torrents); torrent_handle h; if (!handles.empty()) h = handles[0]; std::deque alerts; ses.pop_alerts(&alerts); for (std::deque::iterator i = alerts.begin(); i != alerts.end(); ++i) { if (predicate && predicate(*i)) ret = true; if (peer_disconnected_alert* p = alert_cast(*i)) { fprintf(stderr, "%s(%s): %s\n", name, print_endpoint(p->ip).c_str(), p->message().c_str()); } else if ((*i)->message() != "block downloading" && (*i)->message() != "block finished" && (*i)->message() != "piece finished" && !no_output) { fprintf(stderr, "%s: %s\n", name, (*i)->message().c_str()); } TEST_CHECK(alert_cast(*i) == 0 || allow_failed_fastresume); peer_error_alert* pea = alert_cast(*i); TEST_CHECK(pea == 0 || (!handles.empty() && h.status().is_seeding) || pea->error.message() == "connecting to peer" || pea->error.message() == "closing connection to ourself" || pea->error.message() == "duplicate connection" || pea->error.message() == "duplicate peer-id" || pea->error.message() == "upload to upload connection" || pea->error.message() == "stopping torrent" || (allow_disconnects && pea->error.message() == "Broken pipe") || (allow_disconnects && pea->error.message() == "Connection reset by peer") || (allow_disconnects && pea->error.message() == "End of file.")); delete *i; } return ret; } bool listen_done = false; bool listen_alert(libtorrent::alert* a) { if (alert_cast(a) || alert_cast(a)) listen_done = true; return true; } void wait_for_listen(libtorrent::session& ses, char const* name) { listen_done = false; alert const* a = 0; do { print_alerts(ses, name, true, true, true, &listen_alert, false); if (listen_done) break; a = ses.wait_for_alert(milliseconds(500)); } while (a); } void test_sleep(int millisec) { libtorrent::sleep(millisec); } void stop_proxy(int port) { char buf[100]; snprintf(buf, sizeof(buf), "delegated -P%d -Fkill", port); system(buf); } void start_proxy(int port, int proxy_type) { using namespace libtorrent; stop_proxy(port); char const* type = ""; char const* auth = ""; switch (proxy_type) { case proxy_settings::socks4: type = "socks4"; break; case proxy_settings::socks5: type = "socks5"; break; case proxy_settings::socks5_pw: type = "socks5"; auth = "AUTHORIZER=-list{testuser:testpass}"; break; case proxy_settings::http: type = "http"; break; case proxy_settings::http_pw: type = "http"; auth = "AUTHORIZER=-list{testuser:testpass}"; break; } char buf[512]; // we need to echo n since dg will ask us to configure it snprintf(buf, sizeof(buf), "echo n | delegated -P%d ADMIN=test@test.com " "PERMIT=\"*:*:localhost\" REMITTABLE=\"*\" RELAY=proxy,delegate " "SERVER=%s %s" , port, type, auth); fprintf(stderr, "starting delegated proxy on port %d (%s %s)...\n", port, type, auth); system(buf); fprintf(stderr, "launched\n"); // apparently delegate takes a while to open its listen port test_sleep(500); } using namespace libtorrent; template boost::intrusive_ptr clone_ptr(boost::intrusive_ptr const& ptr) { return boost::intrusive_ptr(new T(*ptr)); } boost::intrusive_ptr create_torrent(std::ostream* file, int piece_size , int num_pieces, bool add_tracker) { char const* tracker_url = "http://non-existent-name.com/announce"; // excercise the path when encountering invalid urls char const* invalid_tracker_url = "http:"; char const* invalid_tracker_protocol = "foo://non/existent-name.com/announce"; file_storage fs; int total_size = piece_size * num_pieces; fs.add_file("temporary", total_size); libtorrent::create_torrent t(fs, piece_size); if (add_tracker) { t.add_tracker(tracker_url); t.add_tracker(invalid_tracker_url); t.add_tracker(invalid_tracker_protocol); } std::vector piece(piece_size); for (int i = 0; i < int(piece.size()); ++i) piece[i] = (i % 26) + 'A'; // calculate the hash for all pieces int num = t.num_pieces(); sha1_hash ph = hasher(&piece[0], piece.size()).final(); for (int i = 0; i < num; ++i) t.set_hash(i, ph); if (file) { while (total_size > 0) { file->write(&piece[0], (std::min)(int(piece.size()), total_size)); total_size -= piece.size(); } } std::vector tmp; std::back_insert_iterator > out(tmp); bencode(out, t.generate()); error_code ec; return boost::intrusive_ptr(new torrent_info( &tmp[0], tmp.size(), ec)); } boost::tuple setup_transfer(session* ses1, session* ses2, session* ses3 , bool clear_files, bool use_metadata_transfer, bool connect_peers , std::string suffix, int piece_size , boost::intrusive_ptr* torrent, bool super_seeding , add_torrent_params const* p, bool stop_lsd) { assert(ses1); assert(ses2); if (stop_lsd) { ses1->stop_lsd(); ses2->stop_lsd(); if (ses3) ses3->stop_lsd(); } session_settings sess_set = ses1->settings(); if (ses3) sess_set.allow_multiple_connections_per_ip = true; sess_set.ignore_limits_on_local_network = false; sess_set.mixed_mode_algorithm = session_settings::prefer_tcp; sess_set.max_failcount = 1; ses1->set_settings(sess_set); ses2->set_settings(sess_set); if (ses3) ses3->set_settings(sess_set); ses1->set_alert_mask(~(alert::progress_notification | alert::stats_notification)); ses2->set_alert_mask(~(alert::progress_notification | alert::stats_notification)); if (ses3) ses3->set_alert_mask(~(alert::progress_notification | alert::stats_notification)); std::srand((unsigned int)time(0)); peer_id pid; std::generate(&pid[0], &pid[0] + 20, std::rand); ses1->set_peer_id(pid); std::generate(&pid[0], &pid[0] + 20, std::rand); ses2->set_peer_id(pid); assert(ses1->id() != ses2->id()); if (ses3) { std::generate(&pid[0], &pid[0] + 20, std::rand); ses3->set_peer_id(pid); assert(ses3->id() != ses2->id()); } boost::intrusive_ptr t; if (torrent == 0) { error_code ec; create_directory("./tmp1" + suffix, ec); std::ofstream file(("./tmp1" + suffix + "/temporary").c_str()); t = ::create_torrent(&file, piece_size, 19, true); file.close(); if (clear_files) { remove_all("./tmp2" + suffix + "/temporary", ec); remove_all("./tmp3" + suffix + "/temporary", ec); } char ih_hex[41]; to_hex((char const*)&t->info_hash()[0], 20, ih_hex); fprintf(stderr, "generated torrent: %s ./tmp1%s/temporary\n", ih_hex, suffix.c_str()); } else { t = *torrent; } // they should not use the same save dir, because the // file pool will complain if two torrents are trying to // use the same files sha1_hash info_hash = t->info_hash(); add_torrent_params param; param.paused = false; param.auto_managed = false; if (p) param = *p; param.ti = clone_ptr(t); param.save_path = "./tmp1" + suffix; param.seed_mode = true; error_code ec; torrent_handle tor1 = ses1->add_torrent(param, ec); tor1.super_seeding(super_seeding); param.seed_mode = false; TEST_CHECK(!ses1->get_torrents().empty()); torrent_handle tor2; torrent_handle tor3; // the downloader cannot use seed_mode param.seed_mode = false; if (ses3) { param.ti = clone_ptr(t); param.save_path = "./tmp3" + suffix; tor3 = ses3->add_torrent(param, ec); TEST_CHECK(!ses3->get_torrents().empty()); } if (use_metadata_transfer) { param.ti = 0; param.info_hash = t->info_hash(); } else { param.ti = clone_ptr(t); } param.save_path = "./tmp2" + suffix; tor2 = ses2->add_torrent(param, ec); TEST_CHECK(!ses2->get_torrents().empty()); assert(ses1->get_torrents().size() == 1); assert(ses2->get_torrents().size() == 1); // test_sleep(100); if (connect_peers) { fprintf(stderr, "connecting peer\n"); error_code ec; tor1.connect_peer(tcp::endpoint(address::from_string("127.0.0.1", ec) , ses2->listen_port())); if (ses3) { // give the other peers some time to get an initial // set of pieces before they start sharing with each-other tor3.connect_peer(tcp::endpoint( address::from_string("127.0.0.1", ec) , ses2->listen_port())); tor3.connect_peer(tcp::endpoint( address::from_string("127.0.0.1", ec) , ses1->listen_port())); } } return boost::make_tuple(tor1, tor2, tor3); } boost::asio::io_service* tracker_ios = 0; boost::shared_ptr tracker_server; libtorrent::mutex tracker_lock; libtorrent::event tracker_initialized; bool udp_failed = false; void stop_tracker() { if (tracker_server && tracker_ios) { tracker_ios->stop(); tracker_server->join(); tracker_server.reset(); tracker_ios = 0; } } void udp_tracker_thread(int* port); int start_tracker() { stop_tracker(); { libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.clear(l); } int port = 0; tracker_server.reset(new libtorrent::thread(boost::bind(&udp_tracker_thread, &port))); { libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.wait(l); } // test_sleep(100); return port; } void on_udp_receive(error_code const& ec, size_t bytes_transferred, udp::endpoint const* from, char* buffer, udp::socket* sock) { if (ec) { fprintf(stderr, "UDP tracker, read failed: %s\n", ec.message().c_str()); return; } udp_failed = false; if (bytes_transferred < 16) { fprintf(stderr, "UDP message too short\n"); return; } char* ptr = buffer; detail::read_uint64(ptr); boost::uint32_t action = detail::read_uint32(ptr); boost::uint32_t transaction_id = detail::read_uint32(ptr); error_code e; switch (action) { case 0: // connect ptr = buffer; detail::write_uint32(0, ptr); // action = connect detail::write_uint32(transaction_id, ptr); // transaction_id detail::write_uint64(10, ptr); // connection_id sock->send_to(asio::buffer(buffer, 16), *from, 0, e); break; case 1: // announce ptr = buffer; detail::write_uint32(1, ptr); // action = announce detail::write_uint32(transaction_id, ptr); // transaction_id detail::write_uint32(1800, ptr); // interval detail::write_uint32(1, ptr); // incomplete detail::write_uint32(1, ptr); // complete // 0 peers sock->send_to(asio::buffer(buffer, 20), *from, 0, e); break; default: // ignore scrapes break; } } void udp_tracker_thread(int* port) { io_service ios; udp::socket acceptor(ios); error_code ec; acceptor.open(udp::v4(), ec); if (ec) { fprintf(stderr, "Error opening listen UDP socket: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.signal(l); return; } acceptor.bind(udp::endpoint(address_v4::any(), 0), ec); if (ec) { fprintf(stderr, "Error binding UDP socket to port 0: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.signal(l); return; } *port = acceptor.local_endpoint().port(); tracker_ios = &ios; fprintf(stderr, "UDP tracker initialized on port %d\n", *port); { libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.signal(l); } char buffer[2000]; for (;;) { error_code ec; udp::endpoint from; udp_failed = true; acceptor.async_receive_from( asio::buffer(buffer, sizeof(buffer)), from, boost::bind( &on_udp_receive, _1, _2, &from, &buffer[0], &acceptor)); ios.run_one(ec); if (udp_failed) return; if (ec) { fprintf(stderr, "Error receiving on UDP socket: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(tracker_lock); tracker_initialized.signal(l); return; } ios.reset(); } } boost::asio::io_service* web_ios = 0; boost::shared_ptr web_server; libtorrent::mutex web_lock; libtorrent::event web_initialized; void stop_web_server() { if (web_server && web_ios) { web_ios->post(boost::bind(&io_service::stop, web_ios)); web_server->join(); web_server.reset(); web_ios = 0; } } void web_server_thread(int* port, bool ssl, bool chunked); int start_web_server(bool ssl, bool chunked_encoding) { stop_web_server(); { libtorrent::mutex::scoped_lock l(web_lock); web_initialized.clear(l); } if (ssl) { system("echo . > tmp"); system("echo test province >>tmp"); system("echo test city >> tmp"); system("echo test company >> tmp"); system("echo test department >> tmp"); system("echo tester >> tmp"); system("echo test@test.com >> tmp"); system("openssl req -new -x509 -keyout server.pem -out server.pem " "-days 365 -nodes > %s\n", msg); write(s, boost::asio::buffer(msg, pkt_len), boost::asio::transfer_all(), ec); } bool accept_done = false; void on_accept(error_code const& ec) { if (ec) { fprintf(stderr, "Error accepting socket: %s\n", ec.message().c_str()); accept_done = false; } else { // fprintf(stderr, "accepting connection\n"); accept_done = true; } } void send_content(socket_type& s, char const* file, int size, bool chunked) { error_code ec; if (chunked) { int chunk_size = 13; char head[20]; std::vector bufs(3); bufs[2] = asio::const_buffer("\r\n", 2); while (chunk_size > 0) { chunk_size = std::min(chunk_size, size); int len = snprintf(head, sizeof(head), "%x\r\n", chunk_size); bufs[0] = asio::const_buffer(head, len); if (chunk_size == 0) { // terminate bufs.erase(bufs.begin()+1); } else { bufs[1] = asio::const_buffer(file, chunk_size); } write(s, bufs, boost::asio::transfer_all(), ec); size -= chunk_size; file += chunk_size; chunk_size *= 2; } } else { write(s, boost::asio::buffer(file, size), boost::asio::transfer_all(), ec); } } void web_server_thread(int* port, bool ssl, bool chunked) { io_service ios; socket_acceptor acceptor(ios); error_code ec; acceptor.open(tcp::v4(), ec); if (ec) { fprintf(stderr, "Error opening listen socket: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(web_lock); web_initialized.signal(l); return; } acceptor.set_option(socket_acceptor::reuse_address(true), ec); if (ec) { fprintf(stderr, "Error setting listen socket to reuse addr: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(web_lock); web_initialized.signal(l); return; } acceptor.bind(tcp::endpoint(address_v4::any(), 0), ec); if (ec) { fprintf(stderr, "Error binding listen socket to port 0: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(web_lock); web_initialized.signal(l); return; } *port = acceptor.local_endpoint().port(); acceptor.listen(10, ec); if (ec) { fprintf(stderr, "Error listening on socket: %s\n", ec.message().c_str()); libtorrent::mutex::scoped_lock l(web_lock); web_initialized.signal(l); return; } web_ios = &ios; fprintf(stderr, "web server initialized on port %d\n", *port); { libtorrent::mutex::scoped_lock l(web_lock); web_initialized.signal(l); } char buf[10000]; int len = 0; int offset = 0; bool connection_close = false; socket_type s(ios); void* ctx = 0; #ifdef TORRENT_USE_OPENSSL boost::asio::ssl::context ssl_ctx(ios, boost::asio::ssl::context::sslv2_server); ssl_ctx.use_certificate_chain_file("server.pem"); ssl_ctx.use_private_key_file("server.pem", asio::ssl::context::pem); ssl_ctx.set_verify_mode(boost::asio::ssl::context::verify_none); if (ssl) ctx = &ssl_ctx; #endif proxy_settings p; instantiate_connection(ios, p, s, ctx); for (;;) { if (connection_close) { // fprintf(stderr, "closing connection\n"); s.close(ec); connection_close = false; } if (!s.is_open()) { len = 0; offset = 0; error_code ec; stream_socket* sock; #ifdef TORRENT_USE_OPENSSL if (ssl) sock = &s.get >()->next_layer().next_layer(); else #endif sock = s.get(); accept_done = false; acceptor.async_accept(*sock, &on_accept); ios.reset(); ios.run_one(); if (!accept_done) { fprintf(stderr, "accept failed: %s\n", ec.message().c_str()); return; } // fprintf(stderr, "accepting incoming connection\n"); if (!s.is_open()) continue; #ifdef TORRENT_USE_OPENSSL if (ssl) s.get >()->next_layer().handshake(asio::ssl::stream_base::server); #endif } http_parser p; bool failed = false; do { p.reset(); bool error = false; p.incoming(buffer::const_interval(buf + offset, buf + len), error); char const* extra_header[4] = {"","","",""}; TEST_CHECK(error == false); if (error) { fprintf(stderr, "parse failed\n"); failed = true; break; } while (!p.finished()) { TORRENT_ASSERT(len < int(sizeof(buf))); size_t received = s.read_some(boost::asio::buffer(&buf[len] , sizeof(buf) - len), ec); // fprintf(stderr, "read: %d\n", int(received)); if (ec || received <= 0) { fprintf(stderr, "read failed: %s received: %d\n", ec.message().c_str(), int(received)); failed = true; break; } len += received; p.incoming(buffer::const_interval(buf + offset, buf + len), error); TEST_CHECK(error == false); if (error) { fprintf(stderr, "parse failed\n"); failed = true; break; } } std::string connection = p.header("connection"); std::string via = p.header("via"); // The delegate proxy doesn't say connection close, but it expects it to be closed // the Via: header is an indicator of delegate making the request if (connection == "close" || !via.empty()) { // fprintf(stderr, "got connection close\n"); connection_close = true; } // fprintf(stderr, "%s", std::string(buf + offset, p.body_start()).c_str()); if (failed) { fprintf(stderr, "connection failed\n"); connection_close = true; break; } offset += int(p.body_start() + p.content_length()); // fprintf(stderr, "offset: %d len: %d\n", offset, len); if (p.method() != "get" && p.method() != "post") { fprintf(stderr, "incorrect method: %s\n", p.method().c_str()); break; } std::string path = p.path(); if (path == "/redirect") { extra_header[0] = "Location: /test_file\r\n"; send_response(s, ec, 301, "Moved Permanently", extra_header, 0); break; } if (path == "/infinite_redirect") { extra_header[0] = "Location: /infinite_redirect\r\n"; send_response(s, ec, 301, "Moved Permanently", extra_header, 0); break; } if (path == "/relative/redirect") { extra_header[0] = "Location: ../test_file\r\n"; send_response(s, ec, 301, "Moved Permanently", extra_header, 0); break; } if (path.substr(0, 9) == "/announce") { entry announce; announce["interval"] = 1800; announce["complete"] = 1; announce["incomplete"] = 1; announce["peers"].string(); std::vector buf; bencode(std::back_inserter(buf), announce); send_response(s, ec, 200, "OK", extra_header, buf.size()); write(s, boost::asio::buffer(&buf[0], buf.size()), boost::asio::transfer_all(), ec); } if (path.substr(0, 6) == "/seed?") { char const* piece = strstr(path.c_str(), "&piece="); if (piece == 0) { fprintf(stderr, "invalid web seed request: %s\n", path.c_str()); break; } boost::uint64_t idx = atoi(piece + 7); char const* range = strstr(path.c_str(), "&ranges="); int range_end = 0; int range_start = 0; if (range) { range_start = atoi(range + 8); range = strchr(range, '-'); if (range == 0) { fprintf(stderr, "invalid web seed request: %s\n", path.c_str()); break; } range_end = atoi(range + 1); } else { range_start = 0; // assume piece size of 64kiB range_end = 64*1024-1; } int size = range_end - range_start + 1; boost::uint64_t off = idx * 64 * 1024 + range_start; std::vector file_buf; error_code ec; int res = load_file("./tmp1_web_seed/seed", file_buf, ec); if (res == -1 || file_buf.empty()) { send_response(s, ec, 404, "Not Found", extra_header, 0); continue; } send_response(s, ec, 200, "OK", extra_header, size); // fprintf(stderr, "sending %d bytes of payload [%d, %d)\n" // , size, int(off), int(off + size)); write(s, boost::asio::buffer(&file_buf[0] + off, size) , boost::asio::transfer_all(), ec); memmove(buf, buf + offset, len - offset); len -= offset; offset = 0; continue; } // fprintf(stderr, ">> serving file %s\n", path.c_str()); std::vector file_buf; // remove the / from the path path = path.substr(1); error_code ec; int res = load_file(path, file_buf, ec); if (res == -1) { send_response(s, ec, 404, "Not Found", extra_header, 0); continue; } if (res != 0) { // this means the file was either too big or couldn't be read send_response(s, ec, 503, "Internal Error", extra_header, 0); continue; } // serve file if (extension(path) == ".gz") { extra_header[0] = "Content-Encoding: gzip\r\n"; } if (chunked) { extra_header[2] = "Transfer-Encoding: chunked\r\n"; } if (!p.header("range").empty()) { std::string range = p.header("range"); int start, end; sscanf(range.c_str(), "bytes=%d-%d", &start, &end); char eh[400]; snprintf(eh, sizeof(eh), "Content-Range: bytes %d-%d\r\n", start, end); extra_header[1] = eh; send_response(s, ec, 206, "Partial", extra_header, end - start + 1); if (!file_buf.empty()) { send_content(s, &file_buf[0] + start, end - start + 1, chunked); } // fprintf(stderr, "send %d bytes of payload\n", end - start + 1); } else { send_response(s, ec, 200, "OK", extra_header, file_buf.size()); if (!file_buf.empty()) send_content(s, &file_buf[0], file_buf.size(), chunked); } // fprintf(stderr, "%d bytes left in receive buffer. offset: %d\n", len - offset, offset); memmove(buf, buf + offset, len - offset); len -= offset; offset = 0; } while (offset < len); } fprintf(stderr, "exiting web server thread\n"); }