//------------------------------------------------------------------------------ /* This file is part of rippled: https://github.com/ripple/rippled Copyright (c) 2012, 2013 Ripple Labs Inc. Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ //============================================================================== #include #include #include #include namespace ripple { ConnectAttempt::ConnectAttempt (Application& app, boost::asio::io_service& io_service, endpoint_type const& remote_endpoint, Resource::Consumer usage, beast::asio::ssl_bundle::shared_context const& context, std::uint32_t id, PeerFinder::Slot::ptr const& slot, beast::Journal journal, OverlayImpl& overlay) : Child (overlay) , app_ (app) , id_ (id) , sink_ (journal, OverlayImpl::makePrefix(id)) , journal_ (sink_) , remote_endpoint_ (remote_endpoint) , usage_ (usage) , strand_ (io_service) , timer_ (io_service) , ssl_bundle_ (std::make_unique( context, io_service)) , socket_ (ssl_bundle_->socket) , stream_ (ssl_bundle_->stream) , slot_ (slot) { JLOG(journal_.debug()) << "Connect " << remote_endpoint; } ConnectAttempt::~ConnectAttempt() { if (slot_ != nullptr) overlay_.peerFinder().on_closed(slot_); JLOG(journal_.trace()) << "~ConnectAttempt"; } void ConnectAttempt::stop() { if (! strand_.running_in_this_thread()) return strand_.post(std::bind( &ConnectAttempt::stop, shared_from_this())); if (stream_.next_layer().is_open()) { JLOG(journal_.debug()) << "Stop"; } close(); } void ConnectAttempt::run() { error_code ec; stream_.next_layer().async_connect (remote_endpoint_, strand_.wrap (std::bind (&ConnectAttempt::onConnect, shared_from_this(), std::placeholders::_1))); } //------------------------------------------------------------------------------ void ConnectAttempt::close() { assert(strand_.running_in_this_thread()); if (stream_.next_layer().is_open()) { error_code ec; timer_.cancel(ec); socket_.close(ec); JLOG(journal_.debug()) << "Closed"; } } void ConnectAttempt::fail (std::string const& reason) { assert(strand_.running_in_this_thread()); if (stream_.next_layer().is_open()) { JLOG(journal_.debug()) << reason; } close(); } void ConnectAttempt::fail (std::string const& name, error_code ec) { assert(strand_.running_in_this_thread()); if (stream_.next_layer().is_open()) { JLOG(journal_.debug()) << name << ": " << ec.message(); } close(); } void ConnectAttempt::setTimer() { error_code ec; timer_.expires_from_now(std::chrono::seconds(15), ec); if (ec) { JLOG(journal_.error()) << "setTimer: " << ec.message(); return; } timer_.async_wait(strand_.wrap(std::bind( &ConnectAttempt::onTimer, shared_from_this(), std::placeholders::_1))); } void ConnectAttempt::cancelTimer() { error_code ec; timer_.cancel(ec); } void ConnectAttempt::onTimer (error_code ec) { if (! stream_.next_layer().is_open()) return; if (ec == boost::asio::error::operation_aborted) return; if (ec) { // This should never happen JLOG(journal_.error()) << "onTimer: " << ec.message(); return close(); } fail("Timeout"); } void ConnectAttempt::onConnect (error_code ec) { cancelTimer(); if(ec == boost::asio::error::operation_aborted) return; endpoint_type local_endpoint; if(! ec) local_endpoint = stream_.next_layer().local_endpoint(ec); if(ec) return fail("onConnect", ec); if(! stream_.next_layer().is_open()) return; JLOG(journal_.trace()) << "onConnect"; setTimer(); stream_.set_verify_mode (boost::asio::ssl::verify_none); stream_.async_handshake (boost::asio::ssl::stream_base::client, strand_.wrap (std::bind (&ConnectAttempt::onHandshake, shared_from_this(), std::placeholders::_1))); } void ConnectAttempt::onHandshake (error_code ec) { cancelTimer(); if(! stream_.next_layer().is_open()) return; if(ec == boost::asio::error::operation_aborted) return; endpoint_type local_endpoint; if (! ec) local_endpoint = stream_.next_layer().local_endpoint(ec); if(ec) return fail("onHandshake", ec); JLOG(journal_.trace()) << "onHandshake"; if (! overlay_.peerFinder().onConnected (slot_, beast::IPAddressConversion::from_asio (local_endpoint))) return fail("Duplicate connection"); auto sharedValue = makeSharedValue( stream_.native_handle(), journal_); if (! sharedValue) return close(); // makeSharedValue logs req_ = makeRequest(! overlay_.peerFinder().config().peerPrivate, remote_endpoint_.address()); auto const hello = buildHello ( *sharedValue, overlay_.setup().public_ip, beast::IPAddressConversion::from_asio(remote_endpoint_), app_); appendHello (req_, hello); setTimer(); boost::beast::http::async_write(stream_, req_, strand_.wrap (std::bind (&ConnectAttempt::onWrite, shared_from_this(), std::placeholders::_1))); } void ConnectAttempt::onWrite (error_code ec) { cancelTimer(); if(! stream_.next_layer().is_open()) return; if(ec == boost::asio::error::operation_aborted) return; if(ec) return fail("onWrite", ec); boost::beast::http::async_read(stream_, read_buf_, response_, strand_.wrap(std::bind(&ConnectAttempt::onRead, shared_from_this(), std::placeholders::_1))); } void ConnectAttempt::onRead (error_code ec) { cancelTimer(); if(! stream_.next_layer().is_open()) return; if(ec == boost::asio::error::operation_aborted) return; if(ec == boost::asio::error::eof) { JLOG(journal_.info()) << "EOF"; setTimer(); return stream_.async_shutdown(strand_.wrap(std::bind( &ConnectAttempt::onShutdown, shared_from_this(), std::placeholders::_1))); } if(ec) return fail("onRead", ec); processResponse(); } void ConnectAttempt::onShutdown (error_code ec) { cancelTimer(); if (! ec) { JLOG(journal_.error()) << "onShutdown: expected error condition"; return close(); } if (ec != boost::asio::error::eof) return fail("onShutdown", ec); close(); } //-------------------------------------------------------------------------- auto ConnectAttempt::makeRequest (bool crawl, boost::asio::ip::address const& remote_address) -> request_type { request_type m; m.method(boost::beast::http::verb::get); m.target("/"); m.version(11); m.insert ("User-Agent", BuildInfo::getFullVersionString()); m.insert ("Upgrade", "RTXP/1.2"); //std::string("RTXP/") + to_string (BuildInfo::getCurrentProtocol())); m.insert ("Connection", "Upgrade"); m.insert ("Connect-As", "Peer"); m.insert ("Crawl", crawl ? "public" : "private"); return m; } void ConnectAttempt::processResponse() { if (response_.result() == boost::beast::http::status::service_unavailable) { Json::Value json; Json::Reader r; std::string s; s.reserve(boost::asio::buffer_size(response_.body().data())); for(auto const& buffer : response_.body().data()) s.append( boost::asio::buffer_cast(buffer), boost::asio::buffer_size(buffer)); auto const success = r.parse(s, json); if (success) { if (json.isObject() && json.isMember("peer-ips")) { Json::Value const& ips = json["peer-ips"]; if (ips.isArray()) { std::vector eps; eps.reserve(ips.size()); for (auto const& v : ips) { if (v.isString()) { error_code ec; auto const ep = parse_endpoint(v.asString(), ec); if (!ec) eps.push_back(ep); } } overlay_.peerFinder().onRedirects( remote_endpoint_, eps); } } } } if (! OverlayImpl::isPeerUpgrade(response_)) { JLOG(journal_.info()) << "HTTP Response: " << response_.result() << " " << response_.reason(); return close(); } auto hello = parseHello (false, response_, journal_); if(! hello) return fail("processResponse: Bad TMHello"); auto sharedValue = makeSharedValue( ssl_bundle_->stream.native_handle(), journal_); if(! sharedValue) return close(); // makeSharedValue logs auto publicKey = verifyHello (*hello, *sharedValue, overlay_.setup().public_ip, beast::IPAddressConversion::from_asio(remote_endpoint_), journal_, app_); if(! publicKey) return close(); // verifyHello logs JLOG(journal_.info()) << "Public Key: " << toBase58 ( TokenType::NodePublic, *publicKey); auto const protocol = BuildInfo::make_protocol(hello->protoversion()); JLOG(journal_.info()) << "Protocol: " << to_string(protocol); auto member = app_.cluster().member(*publicKey); if (member) { JLOG(journal_.info()) << "Cluster name: " << *member; } auto const result = overlay_.peerFinder().activate (slot_, *publicKey, static_cast(member)); if (result != PeerFinder::Result::success) return fail("Outbound slots full"); auto const peer = std::make_shared(app_, std::move(ssl_bundle_), read_buf_.data(), std::move(slot_), std::move(response_), usage_, *hello, *publicKey, id_, overlay_); overlay_.add_active (peer); } } // ripple