diff options
Diffstat (limited to '')
| -rw-r--r-- | CMakeLists.txt | 4 | ||||
| -rw-r--r-- | README.md | 2 | ||||
| -rw-r--r-- | src/net/CMakeLists.txt | 6 | ||||
| -rw-r--r-- | src/net/zmq.cpp | 188 | ||||
| -rw-r--r-- | src/net/zmq.h | 136 | ||||
| -rw-r--r-- | src/rpc/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | src/rpc/zmq_server.cpp | 136 | ||||
| -rw-r--r-- | src/rpc/zmq_server.h | 20 | ||||
| -rw-r--r-- | tests/unit_tests/CMakeLists.txt | 3 | ||||
| -rw-r--r-- | tests/unit_tests/net.cpp | 130 |
10 files changed, 550 insertions, 77 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 60fcf130e..03d57785c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -978,14 +978,14 @@ if(CMAKE_C_COMPILER_ID STREQUAL "Clang" AND ARCH_WIDTH EQUAL "32" AND NOT IOS AN endif() endif() -find_path(ZMQ_INCLUDE_PATH zmq.hpp) +find_path(ZMQ_INCLUDE_PATH zmq.h) find_library(ZMQ_LIB zmq) find_library(PGM_LIBRARY pgm) find_library(NORM_LIBRARY norm) find_library(SODIUM_LIBRARY sodium) if(NOT ZMQ_INCLUDE_PATH) - message(FATAL_ERROR "Could not find required header zmq.hpp") + message(FATAL_ERROR "Could not find required header zmq.h") endif() if(NOT ZMQ_LIB) message(FATAL_ERROR "Could not find required libzmq") @@ -178,7 +178,7 @@ library archives (`.a`). | pkg-config | any | NO | `pkg-config` | `base-devel` | `pkgconf` | NO | | | Boost | 1.58 | NO | `libboost-all-dev` | `boost` | `boost-devel` | NO | C++ libraries | | OpenSSL | basically any | NO | `libssl-dev` | `openssl` | `openssl-devel` | NO | sha256 sum | -| libzmq | 3.0.0 | NO | `libzmq3-dev` | `zeromq` | `cppzmq-devel` | NO | ZeroMQ library | +| libzmq | 3.0.0 | NO | `libzmq3-dev` | `zeromq` | `zeromq-devel` | NO | ZeroMQ library | | OpenPGM | ? | NO | `libpgm-dev` | `libpgm` | `openpgm-devel` | NO | For ZeroMQ | | libnorm[2] | ? | NO | `libnorm-dev` | | ` | YES | For ZeroMQ | | libunbound | 1.4.16 | YES | `libunbound-dev` | `unbound` | `unbound-devel` | NO | DNS resolver | diff --git a/src/net/CMakeLists.txt b/src/net/CMakeLists.txt index 24b707f77..339587ffa 100644 --- a/src/net/CMakeLists.txt +++ b/src/net/CMakeLists.txt @@ -26,8 +26,10 @@ # 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. -set(net_sources dandelionpp.cpp error.cpp i2p_address.cpp parse.cpp socks.cpp socks_connect.cpp tor_address.cpp) -set(net_headers dandelionpp.h error.h i2p_address.h parse.h socks.h socks_connect.h tor_address.h) +set(net_sources dandelionpp.cpp error.cpp i2p_address.cpp parse.cpp socks.cpp + socks_connect.cpp tor_address.cpp zmq.cpp) +set(net_headers dandelionpp.h error.h i2p_address.h parse.h socks.h socks_connect.h + tor_address.h zmq.h) monero_add_library(net ${net_sources} ${net_headers}) target_link_libraries(net common epee ${Boost_ASIO_LIBRARY}) diff --git a/src/net/zmq.cpp b/src/net/zmq.cpp new file mode 100644 index 000000000..d02a22983 --- /dev/null +++ b/src/net/zmq.cpp @@ -0,0 +1,188 @@ +// Copyright (c) 2019, The Monero Project +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, are +// permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright notice, this list of +// conditions and the following disclaimer. +// +// 2. 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. +// +// 3. Neither the name of the copyright holder 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 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. + +#include "net/zmq.h" + +#include <cassert> +#include <cerrno> +#include <limits> +#include <utility> + +namespace net +{ +namespace zmq +{ + const std::error_category& error_category() noexcept + { + struct category final : std::error_category + { + virtual const char* name() const noexcept override final + { + return "error::error_category()"; + } + + virtual std::string message(int value) const override final + { + char const* const msg = zmq_strerror(value); + if (msg) + return msg; + return "zmq_strerror failure"; + } + + virtual std::error_condition default_error_condition(int value) const noexcept override final + { + // maps specific errors to generic `std::errc` cases. + switch (value) + { + case EFSM: + case ETERM: + break; + default: + /* zmq is using cerrno errors. C++ spec indicates that + `std::errc` values must be identical to the cerrno value. + So just map every zmq specific error to the generic errc + equivalent. zmq extensions must be in the switch or they + map to a non-existent errc enum value. */ + return std::errc(value); + } + return std::error_condition{value, *this}; + } + + }; + static const category instance{}; + return instance; + } + + void terminate::call(void* ptr) noexcept + { + assert(ptr != nullptr); // see header + while (zmq_term(ptr)) + { + if (zmq_errno() != EINTR) + break; + } + } + + namespace + { + //! RAII wrapper for `zmq_msg_t`. + class message + { + zmq_msg_t handle_; + + public: + message() noexcept + : handle_() + { + zmq_msg_init(handle()); + } + + message(message&& rhs) = delete; + message(const message& rhs) = delete; + message& operator=(message&& rhs) = delete; + message& operator=(const message& rhs) = delete; + + ~message() noexcept + { + zmq_msg_close(handle()); + } + + zmq_msg_t* handle() noexcept + { + return std::addressof(handle_); + } + + const char* data() noexcept + { + return static_cast<const char*>(zmq_msg_data(handle())); + } + + std::size_t size() noexcept + { + return zmq_msg_size(handle()); + } + }; + + struct do_receive + { + /* ZMQ documentation states that message parts are atomic - either + all are received or none are. Looking through ZMQ code and + Github discussions indicates that after part 1 is returned, + `EAGAIN` cannot be returned to meet these guarantees. Unit tests + verify (for the `inproc://` case) that this is the behavior. + Therefore, read errors after the first part are treated as a + failure for the entire message (probably `ETERM`). */ + int operator()(std::string& payload, void* const socket, const int flags) const + { + static constexpr const int max_out = std::numeric_limits<int>::max(); + const std::string::size_type initial = payload.size(); + message part{}; + for (;;) + { + int last = 0; + if ((last = zmq_msg_recv(part.handle(), socket, flags)) < 0) + return last; + + payload.append(part.data(), part.size()); + if (!zmq_msg_more(part.handle())) + break; + } + const std::string::size_type added = payload.size() - initial; + return unsigned(max_out) < added ? max_out : int(added); + } + }; + + template<typename F, typename... T> + expect<void> retry_op(F op, T&&... args) noexcept(noexcept(op(args...))) + { + for (;;) + { + if (0 <= op(args...)) + return success(); + + const int error = zmq_errno(); + if (error != EINTR) + return make_error_code(error); + } + } + } // anonymous + + expect<std::string> receive(void* const socket, const int flags) + { + std::string payload{}; + MONERO_CHECK(retry_op(do_receive{}, payload, socket, flags)); + return {std::move(payload)}; + } + + expect<void> send(const epee::span<const std::uint8_t> payload, void* const socket, const int flags) noexcept + { + return retry_op(zmq_send, socket, payload.data(), payload.size(), flags); + } +} // zmq +} // net + diff --git a/src/net/zmq.h b/src/net/zmq.h new file mode 100644 index 000000000..c6a7fd743 --- /dev/null +++ b/src/net/zmq.h @@ -0,0 +1,136 @@ +// Copyright (c) 2019, The Monero Project +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, are +// permitted provided that the following conditions are met: +// +// 1. Redistributions of source code must retain the above copyright notice, this list of +// conditions and the following disclaimer. +// +// 2. 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. +// +// 3. Neither the name of the copyright holder 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 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. + +#include <memory> +#include <string> +#include <system_error> +#include <zmq.h> + +#include "common/expect.h" +#include "span.h" + +//! If the expression is less than 0, return the current ZMQ error code. +#define MONERO_ZMQ_CHECK(...) \ + do \ + { \ + if (( __VA_ARGS__ ) < 0) \ + return {::net::zmq::get_error_code()}; \ + } while (0) + +//! Print a message followed by the current ZMQ error message. +#define MONERO_LOG_ZMQ_ERROR(...) \ + do \ + { \ + MERROR( __VA_ARGS__ << ": " << ::net::zmq::get_error_code().message()); \ + } while (0) + +//! Throw an exception with a custom `msg`, current ZMQ error code, filename, and line number. +#define MONERO_ZMQ_THROW(msg) \ + MONERO_THROW( ::net::zmq::get_error_code(), msg ) + +namespace net +{ +namespace zmq +{ + //! \return Category for ZMQ errors. + const std::error_category& error_category() noexcept; + + //! \return `code` (usally from zmq_errno()`) using `net::zmq::error_category()`. + inline std::error_code make_error_code(int code) noexcept + { + return std::error_code{code, error_category()}; + } + + //! \return Error from `zmq_errno()` using `net::zmq::error_category()`. + inline std::error_code get_error_code() noexcept + { + return make_error_code(zmq_errno()); + } + + //! Calls `zmq_term` + class terminate + { + static void call(void* ptr) noexcept; + public: + void operator()(void* ptr) const noexcept + { + if (ptr) + call(ptr); + } + }; + + //! Calls `zmq_close` + struct close + { + void operator()(void* ptr) const noexcept + { + if (ptr) + zmq_close(ptr); + } + }; + + //! Unique ZMQ context handle, calls `zmq_term` on destruction. + using context = std::unique_ptr<void, terminate>; + + //! Unique ZMQ socket handle, calls `zmq_close` on destruction. + using socket = std::unique_ptr<void, close>; + + /*! Read all parts of the next message on `socket`. Blocks until the entire + next message (all parts) are read, or until `zmq_term` is called on the + `zmq_context` associated with `socket`. If the context is terminated, + `make_error_code(ETERM)` is returned. + + \note This will automatically retry on `EINTR`, so exiting on + interrupts requires context termination. + \note If non-blocking behavior is requested on `socket` or by `flags`, + then `net::zmq::make_error_code(EAGAIN)` will be returned if this + would block. + + \param socket Handle created with `zmq_socket`. + \param flags See `zmq_msg_read` for possible flags. + \return Message payload read from `socket` or ZMQ error. */ + expect<std::string> receive(void* socket, int flags = 0); + + /*! Sends `payload` on `socket`. Blocks until the entire message is queued + for sending, or until `zmq_term` is called on the `zmq_context` + associated with `socket`. If the context is terminated, + `make_error_code(ETERM)` is returned. + + \note This will automatically retry on `EINTR`, so exiting on + interrupts requires context termination. + \note If non-blocking behavior is requested on `socket` or by `flags`, + then `net::zmq::make_error_code(EAGAIN)` will be returned if this + would block. + + \param payload sent as one message on `socket`. + \param socket Handle created with `zmq_socket`. + \param flags See `zmq_send` for possible flags. + \return `success()` if sent, otherwise ZMQ error. */ + expect<void> send(epee::span<const std::uint8_t> payload, void* socket, int flags = 0) noexcept; +} // zmq +} // net diff --git a/src/rpc/CMakeLists.txt b/src/rpc/CMakeLists.txt index d98670e05..116e7f568 100644 --- a/src/rpc/CMakeLists.txt +++ b/src/rpc/CMakeLists.txt @@ -26,6 +26,8 @@ # 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_directories(SYSTEM ${ZMQ_INCLUDE_PATH}) + set(rpc_base_sources rpc_args.cpp) diff --git a/src/rpc/zmq_server.cpp b/src/rpc/zmq_server.cpp index 668a2e5cd..1ee55673e 100644 --- a/src/rpc/zmq_server.cpp +++ b/src/rpc/zmq_server.cpp @@ -28,18 +28,29 @@ #include "zmq_server.h" +#include <chrono> +#include <cstdint> +#include <system_error> + namespace cryptonote { +namespace +{ + constexpr const int num_zmq_threads = 1; + constexpr const std::int64_t max_message_size = 10 * 1024 * 1024; // 10 MiB + constexpr const std::chrono::seconds linger_timeout{2}; // wait period for pending out messages +} + namespace rpc { ZmqServer::ZmqServer(RpcHandler& h) : handler(h), - stop_signal(false), - running(false), - context(DEFAULT_NUM_ZMQ_THREADS) // TODO: make this configurable + context(zmq_init(num_zmq_threads)) { + if (!context) + MONERO_ZMQ_THROW("Unable to create ZMQ context"); } ZmqServer::~ZmqServer() @@ -48,71 +59,88 @@ ZmqServer::~ZmqServer() void ZmqServer::serve() { - - while (1) + try { - try + // socket must close before `zmq_term` will exit. + const net::zmq::socket socket = std::move(rep_socket); + if (!socket) { - zmq::message_t message; - - if (!rep_socket) - { - throw std::runtime_error("ZMQ RPC server reply socket is null"); - } - while (rep_socket->recv(&message, 0)) - { - std::string message_string(reinterpret_cast<const char *>(message.data()), message.size()); - - MDEBUG(std::string("Received RPC request: \"") + message_string + "\""); - - std::string response = handler.handle(message_string); - - zmq::message_t reply(response.size()); - memcpy((void *) reply.data(), response.c_str(), response.size()); - - rep_socket->send(reply); - MDEBUG(std::string("Sent RPC reply: \"") + response + "\""); - - } - } - catch (const boost::thread_interrupted& e) - { - MDEBUG("ZMQ Server thread interrupted."); + MERROR("ZMQ RPC server reply socket is null"); + return; } - catch (const zmq::error_t& e) + + while (1) { - MERROR(std::string("ZMQ error: ") + e.what()); + const std::string message = MONERO_UNWRAP(net::zmq::receive(socket.get())); + MDEBUG("Received RPC request: \"" << message << "\""); + const std::string& response = handler.handle(message); + + MONERO_UNWRAP(net::zmq::send(epee::strspan<std::uint8_t>(response), socket.get())); + MDEBUG("Sent RPC reply: \"" << response << "\""); } - boost::this_thread::interruption_point(); + } + catch (const std::system_error& e) + { + if (e.code() != net::zmq::make_error_code(ETERM)) + MERROR("ZMQ RPC Server Error: " << e.what()); + } + catch (const std::exception& e) + { + MERROR("ZMQ RPC Server Error: " << e.what()); + } + catch (...) + { + MERROR("Unknown error in ZMQ RPC server"); } } -bool ZmqServer::addIPCSocket(std::string address, std::string port) +bool ZmqServer::addIPCSocket(const boost::string_ref address, const boost::string_ref port) { MERROR("ZmqServer::addIPCSocket not yet implemented!"); return false; } -bool ZmqServer::addTCPSocket(std::string address, std::string port) +bool ZmqServer::addTCPSocket(boost::string_ref address, boost::string_ref port) { - try + if (!context) { - std::string addr_prefix("tcp://"); + MERROR("ZMQ RPC Server already shutdown"); + return false; + } - rep_socket.reset(new zmq::socket_t(context, ZMQ_REP)); + rep_socket.reset(zmq_socket(context.get(), ZMQ_REP)); + if (!rep_socket) + { + MONERO_LOG_ZMQ_ERROR("ZMQ RPC Server socket create failed"); + return false; + } - rep_socket->setsockopt(ZMQ_RCVTIMEO, &DEFAULT_RPC_RECV_TIMEOUT_MS, sizeof(DEFAULT_RPC_RECV_TIMEOUT_MS)); + if (zmq_setsockopt(rep_socket.get(), ZMQ_MAXMSGSIZE, std::addressof(max_message_size), sizeof(max_message_size)) != 0) + { + MONERO_LOG_ZMQ_ERROR("Failed to set maximum incoming message size"); + return false; + } - if (address.empty()) - address = "*"; - if (port.empty()) - port = "*"; - std::string bind_address = addr_prefix + address + std::string(":") + port; - rep_socket->bind(bind_address.c_str()); + static constexpr const int linger_value = std::chrono::milliseconds{linger_timeout}.count(); + if (zmq_setsockopt(rep_socket.get(), ZMQ_LINGER, std::addressof(linger_value), sizeof(linger_value)) != 0) + { + MONERO_LOG_ZMQ_ERROR("Failed to set linger timeout"); + return false; } - catch (const std::exception& e) + + if (address.empty()) + address = "*"; + if (port.empty()) + port = "*"; + + std::string bind_address = "tcp://"; + bind_address.append(address.data(), address.size()); + bind_address += ":"; + bind_address.append(port.data(), port.size()); + + if (zmq_bind(rep_socket.get(), bind_address.c_str()) < 0) { - MERROR(std::string("Error creating ZMQ Socket: ") + e.what()); + MONERO_LOG_ZMQ_ERROR("ZMQ RPC Server bind failed"); return false; } return true; @@ -120,22 +148,16 @@ bool ZmqServer::addTCPSocket(std::string address, std::string port) void ZmqServer::run() { - running = true; run_thread = boost::thread(boost::bind(&ZmqServer::serve, this)); } void ZmqServer::stop() { - if (!running) return; - - stop_signal = true; + if (!run_thread.joinable()) + return; - run_thread.interrupt(); + context.reset(); // destroying context terminates all calls run_thread.join(); - - running = false; - - return; } diff --git a/src/rpc/zmq_server.h b/src/rpc/zmq_server.h index 1b1e4c7cf..ce7892dab 100644 --- a/src/rpc/zmq_server.h +++ b/src/rpc/zmq_server.h @@ -29,12 +29,10 @@ #pragma once #include <boost/thread/thread.hpp> -#include <zmq.hpp> -#include <string> -#include <memory> +#include <boost/utility/string_ref.hpp> #include "common/command_line.h" - +#include "net/zmq.h" #include "rpc_handler.h" namespace cryptonote @@ -43,9 +41,6 @@ namespace cryptonote namespace rpc { -static constexpr int DEFAULT_NUM_ZMQ_THREADS = 1; -static constexpr int DEFAULT_RPC_RECV_TIMEOUT_MS = 1000; - class ZmqServer { public: @@ -58,8 +53,8 @@ class ZmqServer void serve(); - bool addIPCSocket(std::string address, std::string port); - bool addTCPSocket(std::string address, std::string port); + bool addIPCSocket(boost::string_ref address, boost::string_ref port); + bool addTCPSocket(boost::string_ref address, boost::string_ref port); void run(); void stop(); @@ -67,14 +62,11 @@ class ZmqServer private: RpcHandler& handler; - volatile bool stop_signal; - volatile bool running; - - zmq::context_t context; + net::zmq::context context; boost::thread run_thread; - std::unique_ptr<zmq::socket_t> rep_socket; + net::zmq::socket rep_socket; }; diff --git a/tests/unit_tests/CMakeLists.txt b/tests/unit_tests/CMakeLists.txt index a5d179040..cac1fa943 100644 --- a/tests/unit_tests/CMakeLists.txt +++ b/tests/unit_tests/CMakeLists.txt @@ -117,7 +117,8 @@ target_link_libraries(unit_tests ${Boost_THREAD_LIBRARY} ${GTEST_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} - ${EXTRA_LIBRARIES}) + ${EXTRA_LIBRARIES} + ${ZMQ_LIB}) set_property(TARGET unit_tests PROPERTY FOLDER "tests") diff --git a/tests/unit_tests/net.cpp b/tests/unit_tests/net.cpp index f24ffb45c..9fe43637b 100644 --- a/tests/unit_tests/net.cpp +++ b/tests/unit_tests/net.cpp @@ -40,6 +40,7 @@ #include <boost/range/adaptor/sliced.hpp> #include <boost/range/combine.hpp> #include <boost/system/error_code.hpp> +#include <boost/thread/scoped_thread.hpp> #include <boost/thread/thread.hpp> #include <boost/uuid/nil_generator.hpp> #include <boost/uuid/random_generator.hpp> @@ -59,6 +60,7 @@ #include "net/socks_connect.h" #include "net/parse.h" #include "net/tor_address.h" +#include "net/zmq.h" #include "p2p/net_peerlist_boost_serialization.h" #include "serialization/keyvalue_serialization.h" #include "storages/portable_storage.h" @@ -1253,3 +1255,131 @@ TEST(dandelionpp_map, dropped_all_connections) EXPECT_EQ(3u, entry.second); } } + +TEST(zmq, error_codes) +{ + EXPECT_EQ( + std::addressof(net::zmq::error_category()), + std::addressof(net::zmq::make_error_code(0).category()) + ); + EXPECT_EQ( + std::make_error_condition(std::errc::not_a_socket), + net::zmq::make_error_code(ENOTSOCK) + ); + + EXPECT_TRUE( + []() -> expect<void> + { + MONERO_ZMQ_CHECK(zmq_msg_send(nullptr, nullptr, 0)); + return success(); + }().matches(std::errc::not_a_socket) + ); + + bool thrown = false; + try + { + MONERO_ZMQ_THROW("stuff"); + } + catch (const std::system_error& e) + { + thrown = true; + EXPECT_EQ(std::make_error_condition(std::errc::not_a_socket), e.code()); + } + EXPECT_TRUE(thrown); +} + +TEST(zmq, read_write) +{ + net::zmq::context context{zmq_init(1)}; + ASSERT_NE(nullptr, context); + + net::zmq::socket send_socket{zmq_socket(context.get(), ZMQ_REQ)}; + net::zmq::socket recv_socket{zmq_socket(context.get(), ZMQ_REP)}; + ASSERT_NE(nullptr, send_socket); + ASSERT_NE(nullptr, recv_socket); + + ASSERT_EQ(0u, zmq_bind(recv_socket.get(), "inproc://testing")); + ASSERT_EQ(0u, zmq_connect(send_socket.get(), "inproc://testing")); + + std::string message; + message.resize(1024); + crypto::rand(message.size(), reinterpret_cast<std::uint8_t*>(std::addressof(message[0]))); + + ASSERT_TRUE(bool(net::zmq::send(epee::strspan<std::uint8_t>(message), send_socket.get()))); + + const expect<std::string> received = net::zmq::receive(recv_socket.get()); + ASSERT_TRUE(bool(received)); + EXPECT_EQ(message, *received); +} + +TEST(zmq, read_write_multipart) +{ + net::zmq::context context{zmq_init(1)}; + ASSERT_NE(nullptr, context); + + net::zmq::socket send_socket{zmq_socket(context.get(), ZMQ_REQ)}; + net::zmq::socket recv_socket{zmq_socket(context.get(), ZMQ_REP)}; + ASSERT_NE(nullptr, send_socket); + ASSERT_NE(nullptr, recv_socket); + + ASSERT_EQ(0u, zmq_bind(recv_socket.get(), "inproc://testing")); + ASSERT_EQ(0u, zmq_connect(send_socket.get(), "inproc://testing")); + + std::string message; + message.resize(999); + crypto::rand(message.size(), reinterpret_cast<std::uint8_t*>(std::addressof(message[0]))); + + for (unsigned i = 0; i < 3; ++i) + { + const expect<std::string> received = net::zmq::receive(recv_socket.get(), ZMQ_DONTWAIT); + ASSERT_FALSE(bool(received)); + EXPECT_EQ(net::zmq::make_error_code(EAGAIN), received.error()); + + const epee::span<const std::uint8_t> bytes{ + reinterpret_cast<const std::uint8_t*>(std::addressof(message[0])) + (i * 333), 333 + }; + ASSERT_TRUE(bool(net::zmq::send(bytes, send_socket.get(), (i == 2 ? 0 : ZMQ_SNDMORE)))); + } + + const expect<std::string> received = net::zmq::receive(recv_socket.get(), ZMQ_DONTWAIT); + ASSERT_TRUE(bool(received)); + EXPECT_EQ(message, *received); +} + +TEST(zmq, read_write_termination) +{ + net::zmq::context context{zmq_init(1)}; + ASSERT_NE(nullptr, context); + + // must be declared before sockets and after context + boost::scoped_thread<> thread{}; + + net::zmq::socket send_socket{zmq_socket(context.get(), ZMQ_REQ)}; + net::zmq::socket recv_socket{zmq_socket(context.get(), ZMQ_REP)}; + ASSERT_NE(nullptr, send_socket); + ASSERT_NE(nullptr, recv_socket); + + ASSERT_EQ(0u, zmq_bind(recv_socket.get(), "inproc://testing")); + ASSERT_EQ(0u, zmq_connect(send_socket.get(), "inproc://testing")); + + std::string message; + message.resize(1024); + crypto::rand(message.size(), reinterpret_cast<std::uint8_t*>(std::addressof(message[0]))); + + ASSERT_TRUE(bool(net::zmq::send(epee::strspan<std::uint8_t>(message), send_socket.get(), ZMQ_SNDMORE))); + + expect<std::string> received = net::zmq::receive(recv_socket.get(), ZMQ_DONTWAIT); + ASSERT_FALSE(bool(received)); + EXPECT_EQ(net::zmq::make_error_code(EAGAIN), received.error()); + + thread = boost::scoped_thread<>{ + boost::thread{ + [&context] () { context.reset(); } + } + }; + + received = net::zmq::receive(recv_socket.get()); + ASSERT_FALSE(bool(received)); + EXPECT_EQ(net::zmq::make_error_code(ETERM), received.error()); +} + |