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| <a href="#596" id="596">596</a> |
| <a href="#597" id="597">597</a> |
| <a href="#598" id="598">598</a> |
| </pre></div><pre class="rust"><code><span class="comment">// Copyright (C) 2020, Cloudflare, Inc. |
| // 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. |
| // |
| // 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 HOLDER 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. |
| |
| </span><span class="kw">use </span><span class="kw">crate</span>::args::<span class="kw-2">*</span>; |
| <span class="kw">use </span><span class="kw">crate</span>::common::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>std::net::ToSocketAddrs; |
| |
| <span class="kw">use </span>std::io::prelude::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span>std::rc::Rc; |
| |
| <span class="kw">use </span>std::cell::RefCell; |
| |
| <span class="kw">use </span>ring::rand::<span class="kw-2">*</span>; |
| |
| <span class="kw">const </span>MAX_DATAGRAM_SIZE: usize = <span class="number">1350</span>; |
| |
| <span class="attr">#[derive(Debug)] |
| </span><span class="kw">pub enum </span>ClientError { |
| HandshakeFail, |
| HttpFail, |
| Other(String), |
| } |
| |
| <span class="kw">pub fn </span>connect( |
| args: ClientArgs, conn_args: CommonArgs, |
| output_sink: <span class="kw">impl </span>FnMut(String) + <span class="lifetime">'static</span>, |
| ) -> <span class="prelude-ty">Result</span><(), ClientError> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; <span class="number">65535</span>]; |
| <span class="kw">let </span><span class="kw-2">mut </span>out = [<span class="number">0</span>; MAX_DATAGRAM_SIZE]; |
| |
| <span class="kw">let </span>output_sink = |
| Rc::new(RefCell::new(output_sink)) <span class="kw">as </span>Rc<RefCell<<span class="kw">dyn </span>FnMut(<span class="kw">_</span>)>>; |
| |
| <span class="comment">// Setup the event loop. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>poll = mio::Poll::new().unwrap(); |
| <span class="kw">let </span><span class="kw-2">mut </span>events = mio::Events::with_capacity(<span class="number">1024</span>); |
| |
| <span class="comment">// We'll only connect to the first server provided in URL list. |
| </span><span class="kw">let </span>connect_url = <span class="kw-2">&</span>args.urls[<span class="number">0</span>]; |
| |
| <span class="comment">// Resolve server address. |
| </span><span class="kw">let </span>peer_addr = <span class="kw">if let </span><span class="prelude-val">Some</span>(addr) = <span class="kw-2">&</span>args.connect_to { |
| addr.parse().expect(<span class="string">"--connect-to is expected to be a string containing an IPv4 or IPv6 address with a port. E.g. 192.0.2.0:443"</span>) |
| } <span class="kw">else </span>{ |
| connect_url.to_socket_addrs().unwrap().next().unwrap() |
| }; |
| |
| <span class="comment">// Bind to INADDR_ANY or IN6ADDR_ANY depending on the IP family of the |
| // server address. This is needed on macOS and BSD variants that don't |
| // support binding to IN6ADDR_ANY for both v4 and v6. |
| </span><span class="kw">let </span>bind_addr = <span class="kw">match </span>peer_addr { |
| std::net::SocketAddr::V4(<span class="kw">_</span>) => <span class="macro">format!</span>(<span class="string">"0.0.0.0:{}"</span>, args.source_port), |
| std::net::SocketAddr::V6(<span class="kw">_</span>) => <span class="macro">format!</span>(<span class="string">"[::]:{}"</span>, args.source_port), |
| }; |
| |
| <span class="comment">// Create the UDP socket backing the QUIC connection, and register it with |
| // the event loop. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>socket = |
| mio::net::UdpSocket::bind(bind_addr.parse().unwrap()).unwrap(); |
| poll.registry() |
| .register(<span class="kw-2">&mut </span>socket, mio::Token(<span class="number">0</span>), mio::Interest::READABLE) |
| .unwrap(); |
| |
| <span class="kw">let </span>migrate_socket = <span class="kw">if </span>args.perform_migration { |
| <span class="kw">let </span><span class="kw-2">mut </span>socket = |
| mio::net::UdpSocket::bind(bind_addr.parse().unwrap()).unwrap(); |
| poll.registry() |
| .register(<span class="kw-2">&mut </span>socket, mio::Token(<span class="number">1</span>), mio::Interest::READABLE) |
| .unwrap(); |
| |
| <span class="prelude-val">Some</span>(socket) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="comment">// Create the configuration for the QUIC connection. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>config = quiche::Config::new(args.version).unwrap(); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>trust_origin_ca_pem) = args.trust_origin_ca_pem { |
| config |
| .load_verify_locations_from_file(trust_origin_ca_pem) |
| .map_err(|e| { |
| ClientError::Other(<span class="macro">format!</span>( |
| <span class="string">"error loading origin CA file : {}"</span>, |
| e |
| )) |
| })<span class="question-mark">?</span>; |
| } <span class="kw">else </span>{ |
| config.verify_peer(!args.no_verify); |
| } |
| |
| config.set_application_protos(<span class="kw-2">&</span>conn_args.alpns).unwrap(); |
| |
| config.set_max_idle_timeout(conn_args.idle_timeout); |
| config.set_max_recv_udp_payload_size(MAX_DATAGRAM_SIZE); |
| config.set_max_send_udp_payload_size(MAX_DATAGRAM_SIZE); |
| config.set_initial_max_data(conn_args.max_data); |
| config.set_initial_max_stream_data_bidi_local(conn_args.max_stream_data); |
| config.set_initial_max_stream_data_bidi_remote(conn_args.max_stream_data); |
| config.set_initial_max_stream_data_uni(conn_args.max_stream_data); |
| config.set_initial_max_streams_bidi(conn_args.max_streams_bidi); |
| config.set_initial_max_streams_uni(conn_args.max_streams_uni); |
| config.set_disable_active_migration(!conn_args.enable_active_migration); |
| config.set_active_connection_id_limit(conn_args.max_active_cids); |
| |
| config.set_max_connection_window(conn_args.max_window); |
| config.set_max_stream_window(conn_args.max_stream_window); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>keylog = <span class="prelude-val">None</span>; |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(keylog_path) = std::env::var_os(<span class="string">"SSLKEYLOGFILE"</span>) { |
| <span class="kw">let </span>file = std::fs::OpenOptions::new() |
| .create(<span class="bool-val">true</span>) |
| .append(<span class="bool-val">true</span>) |
| .open(keylog_path) |
| .unwrap(); |
| |
| keylog = <span class="prelude-val">Some</span>(file); |
| |
| config.log_keys(); |
| } |
| |
| <span class="kw">if </span>conn_args.no_grease { |
| config.grease(<span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">if </span>conn_args.early_data { |
| config.enable_early_data(); |
| } |
| |
| config |
| .set_cc_algorithm_name(<span class="kw-2">&</span>conn_args.cc_algorithm) |
| .unwrap(); |
| |
| <span class="kw">if </span>conn_args.disable_hystart { |
| config.enable_hystart(<span class="bool-val">false</span>); |
| } |
| |
| <span class="kw">if </span>conn_args.dgrams_enabled { |
| config.enable_dgram(<span class="bool-val">true</span>, <span class="number">1000</span>, <span class="number">1000</span>); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>http_conn: <span class="prelude-ty">Option</span><Box<<span class="kw">dyn </span>HttpConn>> = <span class="prelude-val">None</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>app_proto_selected = <span class="bool-val">false</span>; |
| |
| <span class="comment">// Generate a random source connection ID for the connection. |
| </span><span class="kw">let </span>rng = SystemRandom::new(); |
| |
| <span class="kw">let </span>scid = <span class="kw">if </span>!<span class="macro">cfg!</span>(feature = <span class="string">"fuzzing"</span>) { |
| <span class="kw">let </span><span class="kw-2">mut </span>conn_id = [<span class="number">0</span>; quiche::MAX_CONN_ID_LEN]; |
| rng.fill(<span class="kw-2">&mut </span>conn_id[..]).unwrap(); |
| |
| conn_id.to_vec() |
| } <span class="kw">else </span>{ |
| <span class="comment">// When fuzzing use an all zero connection ID. |
| </span>[<span class="number">0</span>; quiche::MAX_CONN_ID_LEN].to_vec() |
| }; |
| |
| <span class="kw">let </span>scid = quiche::ConnectionId::from_ref(<span class="kw-2">&</span>scid); |
| |
| <span class="kw">let </span>local_addr = socket.local_addr().unwrap(); |
| |
| <span class="comment">// Create a QUIC connection and initiate handshake. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>conn = quiche::connect( |
| connect_url.domain(), |
| <span class="kw-2">&</span>scid, |
| local_addr, |
| peer_addr, |
| <span class="kw-2">&mut </span>config, |
| ) |
| .unwrap(); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(keylog) = <span class="kw-2">&mut </span>keylog { |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(keylog) = keylog.try_clone() { |
| conn.set_keylog(Box::new(keylog)); |
| } |
| } |
| |
| <span class="comment">// Only bother with qlog if the user specified it. |
| </span><span class="attr">#[cfg(feature = <span class="string">"qlog"</span>)] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(dir) = std::env::var_os(<span class="string">"QLOGDIR"</span>) { |
| <span class="kw">let </span>id = <span class="macro">format!</span>(<span class="string">"{scid:?}"</span>); |
| <span class="kw">let </span>writer = make_qlog_writer(<span class="kw-2">&</span>dir, <span class="string">"client"</span>, <span class="kw-2">&</span>id); |
| |
| conn.set_qlog( |
| std::boxed::Box::new(writer), |
| <span class="string">"quiche-client qlog"</span>.to_string(), |
| <span class="macro">format!</span>(<span class="string">"{} id={}"</span>, <span class="string">"quiche-client qlog"</span>, id), |
| ); |
| } |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(session_file) = <span class="kw-2">&</span>args.session_file { |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(session) = std::fs::read(session_file) { |
| conn.set_session(<span class="kw-2">&</span>session).ok(); |
| } |
| } |
| |
| <span class="macro">info!</span>( |
| <span class="string">"connecting to {:} from {:} with scid {:?}"</span>, |
| peer_addr, |
| socket.local_addr().unwrap(), |
| scid, |
| ); |
| |
| <span class="kw">let </span>(write, send_info) = conn.send(<span class="kw-2">&mut </span>out).expect(<span class="string">"initial send failed"</span>); |
| |
| <span class="kw">while let </span><span class="prelude-val">Err</span>(e) = socket.send_to(<span class="kw-2">&</span>out[..write], send_info.to) { |
| <span class="kw">if </span>e.kind() == std::io::ErrorKind::WouldBlock { |
| <span class="macro">trace!</span>( |
| <span class="string">"{} -> {}: send() would block"</span>, |
| socket.local_addr().unwrap(), |
| send_info.to |
| ); |
| <span class="kw">continue</span>; |
| } |
| |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::Other(<span class="macro">format!</span>(<span class="string">"send() failed: {e:?}"</span>))); |
| } |
| |
| <span class="macro">trace!</span>(<span class="string">"written {}"</span>, write); |
| |
| <span class="kw">let </span>app_data_start = std::time::Instant::now(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>pkt_count = <span class="number">0</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>scid_sent = <span class="bool-val">false</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>new_path_probed = <span class="bool-val">false</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>migrated = <span class="bool-val">false</span>; |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">if </span>!conn.is_in_early_data() || app_proto_selected { |
| poll.poll(<span class="kw-2">&mut </span>events, conn.timeout()).unwrap(); |
| } |
| |
| <span class="comment">// If the event loop reported no events, it means that the timeout |
| // has expired, so handle it without attempting to read packets. We |
| // will then proceed with the send loop. |
| </span><span class="kw">if </span>events.is_empty() { |
| <span class="macro">trace!</span>(<span class="string">"timed out"</span>); |
| |
| conn.on_timeout(); |
| } |
| |
| <span class="comment">// Read incoming UDP packets from the socket and feed them to quiche, |
| // until there are no more packets to read. |
| </span><span class="kw">for </span>event <span class="kw">in </span><span class="kw-2">&</span>events { |
| <span class="kw">let </span>socket = <span class="kw">match </span>event.token() { |
| mio::Token(<span class="number">0</span>) => <span class="kw-2">&</span>socket, |
| |
| mio::Token(<span class="number">1</span>) => migrate_socket.as_ref().unwrap(), |
| |
| <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| }; |
| |
| <span class="kw">let </span>local_addr = socket.local_addr().unwrap(); |
| <span class="lifetime">'read</span>: <span class="kw">loop </span>{ |
| <span class="kw">let </span>(len, from) = <span class="kw">match </span>socket.recv_from(<span class="kw-2">&mut </span>buf) { |
| <span class="prelude-val">Ok</span>(v) => v, |
| |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="comment">// There are no more UDP packets to read on this socket. |
| // Process subsequent events. |
| </span><span class="kw">if </span>e.kind() == std::io::ErrorKind::WouldBlock { |
| <span class="macro">trace!</span>(<span class="string">"{}: recv() would block"</span>, local_addr); |
| <span class="kw">break </span><span class="lifetime">'read</span>; |
| } |
| |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::Other(<span class="macro">format!</span>( |
| <span class="string">"{local_addr}: recv() failed: {e:?}" |
| </span>))); |
| }, |
| }; |
| |
| <span class="macro">trace!</span>(<span class="string">"{}: got {} bytes"</span>, local_addr, len); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(target_path) = conn_args.dump_packet_path.as_ref() { |
| <span class="kw">let </span>path = <span class="macro">format!</span>(<span class="string">"{target_path}/{pkt_count}.pkt"</span>); |
| |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(f) = std::fs::File::create(path) { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = std::io::BufWriter::new(f); |
| f.write_all(<span class="kw-2">&</span>buf[..len]).ok(); |
| } |
| } |
| |
| pkt_count += <span class="number">1</span>; |
| |
| <span class="kw">let </span>recv_info = quiche::RecvInfo { |
| to: local_addr, |
| from, |
| }; |
| |
| <span class="comment">// Process potentially coalesced packets. |
| </span><span class="kw">let </span>read = <span class="kw">match </span>conn.recv(<span class="kw-2">&mut </span>buf[..len], recv_info) { |
| <span class="prelude-val">Ok</span>(v) => v, |
| |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>(<span class="string">"{}: recv failed: {:?}"</span>, local_addr, e); |
| <span class="kw">continue </span><span class="lifetime">'read</span>; |
| }, |
| }; |
| |
| <span class="macro">trace!</span>(<span class="string">"{}: processed {} bytes"</span>, local_addr, read); |
| } |
| } |
| |
| <span class="macro">trace!</span>(<span class="string">"done reading"</span>); |
| |
| <span class="kw">if </span>conn.is_closed() { |
| <span class="macro">info!</span>( |
| <span class="string">"connection closed, {:?} {:?}"</span>, |
| conn.stats(), |
| conn.path_stats().collect::<Vec<quiche::PathStats>>() |
| ); |
| |
| <span class="kw">if </span>!conn.is_established() { |
| <span class="macro">error!</span>( |
| <span class="string">"connection timed out after {:?}"</span>, |
| app_data_start.elapsed(), |
| ); |
| |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::HandshakeFail); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(session_file) = <span class="kw-2">&</span>args.session_file { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(session) = conn.session() { |
| std::fs::write(session_file, session).ok(); |
| } |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(h_conn) = http_conn { |
| <span class="kw">if </span>h_conn.report_incomplete(<span class="kw-2">&</span>app_data_start) { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::HttpFail); |
| } |
| } |
| |
| <span class="kw">break</span>; |
| } |
| |
| <span class="comment">// Create a new application protocol session once the QUIC connection is |
| // established. |
| </span><span class="kw">if </span>(conn.is_established() || conn.is_in_early_data()) && |
| (!args.perform_migration || migrated) && |
| !app_proto_selected |
| { |
| <span class="comment">// At this stage the ALPN negotiation succeeded and selected a |
| // single application protocol name. We'll use this to construct |
| // the correct type of HttpConn but `application_proto()` |
| // returns a slice, so we have to convert it to a str in order |
| // to compare to our lists of protocols. We `unwrap()` because |
| // we need the value and if something fails at this stage, there |
| // is not much anyone can do to recover. |
| |
| </span><span class="kw">let </span>app_proto = conn.application_proto(); |
| |
| <span class="kw">if </span>alpns::HTTP_09.contains(<span class="kw-2">&</span>app_proto) { |
| http_conn = <span class="prelude-val">Some</span>(Http09Conn::with_urls( |
| <span class="kw-2">&</span>args.urls, |
| args.reqs_cardinal, |
| Rc::clone(<span class="kw-2">&</span>output_sink), |
| )); |
| |
| app_proto_selected = <span class="bool-val">true</span>; |
| } <span class="kw">else if </span>alpns::HTTP_3.contains(<span class="kw-2">&</span>app_proto) { |
| <span class="kw">let </span>dgram_sender = <span class="kw">if </span>conn_args.dgrams_enabled { |
| <span class="prelude-val">Some</span>(Http3DgramSender::new( |
| conn_args.dgram_count, |
| conn_args.dgram_data.clone(), |
| <span class="number">0</span>, |
| )) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| http_conn = <span class="prelude-val">Some</span>(Http3Conn::with_urls( |
| <span class="kw-2">&mut </span>conn, |
| <span class="kw-2">&</span>args.urls, |
| args.reqs_cardinal, |
| <span class="kw-2">&</span>args.req_headers, |
| <span class="kw-2">&</span>args.body, |
| <span class="kw-2">&</span>args.method, |
| args.send_priority_update, |
| conn_args.max_field_section_size, |
| conn_args.qpack_max_table_capacity, |
| conn_args.qpack_blocked_streams, |
| args.dump_json, |
| dgram_sender, |
| Rc::clone(<span class="kw-2">&</span>output_sink), |
| )); |
| |
| app_proto_selected = <span class="bool-val">true</span>; |
| } |
| } |
| |
| <span class="comment">// If we have an HTTP connection, first issue the requests then |
| // process received data. |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(h_conn) = http_conn.as_mut() { |
| h_conn.send_requests(<span class="kw-2">&mut </span>conn, <span class="kw-2">&</span>args.dump_response_path); |
| h_conn.handle_responses(<span class="kw-2">&mut </span>conn, <span class="kw-2">&mut </span>buf, <span class="kw-2">&</span>app_data_start); |
| } |
| |
| <span class="comment">// Handle path events. |
| </span><span class="kw">while let </span><span class="prelude-val">Some</span>(qe) = conn.path_event_next() { |
| <span class="kw">match </span>qe { |
| quiche::PathEvent::New(..) => <span class="macro">unreachable!</span>(), |
| |
| quiche::PathEvent::Validated(local_addr, peer_addr) => { |
| <span class="macro">info!</span>( |
| <span class="string">"Path ({}, {}) is now validated"</span>, |
| local_addr, peer_addr |
| ); |
| conn.migrate(local_addr, peer_addr).unwrap(); |
| migrated = <span class="bool-val">true</span>; |
| }, |
| |
| quiche::PathEvent::FailedValidation(local_addr, peer_addr) => { |
| <span class="macro">info!</span>( |
| <span class="string">"Path ({}, {}) failed validation"</span>, |
| local_addr, peer_addr |
| ); |
| }, |
| |
| quiche::PathEvent::Closed(local_addr, peer_addr) => { |
| <span class="macro">info!</span>( |
| <span class="string">"Path ({}, {}) is now closed and unusable"</span>, |
| local_addr, peer_addr |
| ); |
| }, |
| |
| quiche::PathEvent::ReusedSourceConnectionId( |
| cid_seq, |
| old, |
| new, |
| ) => { |
| <span class="macro">info!</span>( |
| <span class="string">"Peer reused cid seq {} (initially {:?}) on {:?}"</span>, |
| cid_seq, old, new |
| ); |
| }, |
| |
| quiche::PathEvent::PeerMigrated(..) => <span class="macro">unreachable!</span>(), |
| } |
| } |
| |
| <span class="comment">// See whether source Connection IDs have been retired. |
| </span><span class="kw">while let </span><span class="prelude-val">Some</span>(retired_scid) = conn.retired_scid_next() { |
| <span class="macro">info!</span>(<span class="string">"Retiring source CID {:?}"</span>, retired_scid); |
| } |
| |
| <span class="comment">// Provides as many CIDs as possible. |
| </span><span class="kw">while </span>conn.scids_left() > <span class="number">0 </span>{ |
| <span class="kw">let </span>(scid, reset_token) = generate_cid_and_reset_token(<span class="kw-2">&</span>rng); |
| |
| <span class="kw">if </span>conn.new_scid(<span class="kw-2">&</span>scid, reset_token, <span class="bool-val">false</span>).is_err() { |
| <span class="kw">break</span>; |
| } |
| |
| scid_sent = <span class="bool-val">true</span>; |
| } |
| |
| <span class="kw">if </span>args.perform_migration && |
| !new_path_probed && |
| scid_sent && |
| conn.available_dcids() > <span class="number">0 |
| </span>{ |
| <span class="kw">let </span>additional_local_addr = |
| migrate_socket.as_ref().unwrap().local_addr().unwrap(); |
| conn.probe_path(additional_local_addr, peer_addr).unwrap(); |
| |
| new_path_probed = <span class="bool-val">true</span>; |
| } |
| |
| <span class="comment">// Generate outgoing QUIC packets and send them on the UDP socket, until |
| // quiche reports that there are no more packets to be sent. |
| </span><span class="kw">let </span><span class="kw-2">mut </span>sockets = <span class="macro">vec!</span>[<span class="kw-2">&</span>socket]; |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(migrate_socket) = migrate_socket.as_ref() { |
| sockets.push(migrate_socket); |
| } |
| |
| <span class="kw">for </span>socket <span class="kw">in </span>sockets { |
| <span class="kw">let </span>local_addr = socket.local_addr().unwrap(); |
| |
| <span class="kw">for </span>peer_addr <span class="kw">in </span>conn.paths_iter(local_addr) { |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>(write, send_info) = <span class="kw">match </span>conn.send_on_path( |
| <span class="kw-2">&mut </span>out, |
| <span class="prelude-val">Some</span>(local_addr), |
| <span class="prelude-val">Some</span>(peer_addr), |
| ) { |
| <span class="prelude-val">Ok</span>(v) => v, |
| |
| <span class="prelude-val">Err</span>(quiche::Error::Done) => { |
| <span class="macro">trace!</span>( |
| <span class="string">"{} -> {}: done writing"</span>, |
| local_addr, |
| peer_addr |
| ); |
| <span class="kw">break</span>; |
| }, |
| |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">error!</span>( |
| <span class="string">"{} -> {}: send failed: {:?}"</span>, |
| local_addr, peer_addr, e |
| ); |
| |
| conn.close(<span class="bool-val">false</span>, <span class="number">0x1</span>, <span class="string">b"fail"</span>).ok(); |
| <span class="kw">break</span>; |
| }, |
| }; |
| |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(e) = socket.send_to(<span class="kw-2">&</span>out[..write], send_info.to) { |
| <span class="kw">if </span>e.kind() == std::io::ErrorKind::WouldBlock { |
| <span class="macro">trace!</span>( |
| <span class="string">"{} -> {}: send() would block"</span>, |
| local_addr, |
| send_info.to |
| ); |
| <span class="kw">break</span>; |
| } |
| |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::Other(<span class="macro">format!</span>( |
| <span class="string">"{} -> {}: send() failed: {:?}"</span>, |
| local_addr, send_info.to, e |
| ))); |
| } |
| |
| <span class="macro">trace!</span>( |
| <span class="string">"{} -> {}: written {}"</span>, |
| local_addr, |
| send_info.to, |
| write |
| ); |
| } |
| } |
| } |
| |
| <span class="kw">if </span>conn.is_closed() { |
| <span class="macro">info!</span>( |
| <span class="string">"connection closed, {:?} {:?}"</span>, |
| conn.stats(), |
| conn.path_stats().collect::<Vec<quiche::PathStats>>() |
| ); |
| |
| <span class="kw">if </span>!conn.is_established() { |
| <span class="macro">error!</span>( |
| <span class="string">"connection timed out after {:?}"</span>, |
| app_data_start.elapsed(), |
| ); |
| |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::HandshakeFail); |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(session_file) = <span class="kw-2">&</span>args.session_file { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(session) = conn.session() { |
| std::fs::write(session_file, session).ok(); |
| } |
| } |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(h_conn) = http_conn { |
| <span class="kw">if </span>h_conn.report_incomplete(<span class="kw-2">&</span>app_data_start) { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(ClientError::HttpFail); |
| } |
| } |
| |
| <span class="kw">break</span>; |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(()) |
| } |
| </code></pre></div></section></main></body></html> |
