diff options
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/local')
6 files changed, 633 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/local/connect_pair.cpp b/3rdparty/asio/src/examples/cpp11/local/connect_pair.cpp new file mode 100644 index 00000000000..50d0a06712c --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/connect_pair.cpp @@ -0,0 +1,129 @@ +// +// connect_pair.cpp +// ~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <array> +#include <iostream> +#include <string> +#include <cctype> +#include <asio.hpp> + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +using asio::local::stream_protocol; + +class uppercase_filter +{ +public: + uppercase_filter(stream_protocol::socket sock) + : socket_(std::move(sock)) + { + read(); + } + +private: + void read() + { + socket_.async_read_some(asio::buffer(data_), + [this](std::error_code ec, std::size_t size) + { + if (!ec) + { + // Compute result. + for (std::size_t i = 0; i < size; ++i) + data_[i] = std::toupper(data_[i]); + + // Send result. + write(size); + } + else + { + throw std::system_error(ec); + } + }); + } + + void write(std::size_t size) + { + asio::async_write(socket_, asio::buffer(data_, size), + [this](std::error_code ec, std::size_t /*size*/) + { + if (!ec) + { + // Wait for request. + read(); + } + else + { + throw std::system_error(ec); + } + }); + } + + stream_protocol::socket socket_; + std::array<char, 512> data_; +}; + +int main() +{ + try + { + asio::io_context io_context; + + // Create a connected pair and pass one end to a filter. + stream_protocol::socket socket(io_context); + stream_protocol::socket filter_socket(io_context); + asio::local::connect_pair(socket, filter_socket); + uppercase_filter filter(std::move(filter_socket)); + + // The io_context runs in a background thread to perform filtering. + asio::thread thread( + [&io_context]() + { + try + { + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception in thread: " << e.what() << "\n"; + std::exit(1); + } + }); + + for (;;) + { + // Collect request from user. + std::cout << "Enter a string: "; + std::string request; + std::getline(std::cin, request); + + // Send request to filter. + asio::write(socket, asio::buffer(request)); + + // Wait for reply from filter. + std::vector<char> reply(request.size()); + asio::read(socket, asio::buffer(reply)); + + // Show reply to user. + std::cout << "Result: "; + std::cout.write(&reply[0], request.size()); + std::cout << std::endl; + } + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + std::exit(1); + } +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) diff --git a/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp b/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp new file mode 100644 index 00000000000..229509f1c14 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_client.cpp @@ -0,0 +1,102 @@ +// +// fd_passing_stream_client.cpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// Copyright (c) 2021 Heiko Hund (heiko at openvpn dot net) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +// Demonstrates how to pass file descriptors between processes with Asio. +// The client send a file name (destfile) to the server. The server opens +// the file and the associated file descriptor back to the client. + +#include <cstdlib> +#include <cstring> +#include <iostream> +#include "asio.hpp" + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +#include <sys/types.h> +#include <sys/socket.h> + +using asio::local::stream_protocol; + +constexpr std::size_t max_length = 1024; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: fd_passing_stream_client <serversocket>\n"; + return 1; + } + + asio::io_context io_context; + + stream_protocol::socket s(io_context); + s.connect(stream_protocol::endpoint(argv[1])); + + std::cout << "Enter path to write to: "; + char request[max_length]; + std::cin.getline(request, max_length); + size_t request_length = std::strlen(request); + asio::write(s, asio::buffer(request, request_length)); + + char reply[max_length]; + struct msghdr msg = {}; + struct iovec iov = { reply, sizeof(reply) }; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + union + { + struct cmsghdr align; + char buf[CMSG_SPACE(sizeof(int))]; + } cmsgu; + msg.msg_control = cmsgu.buf; + msg.msg_controllen = sizeof(cmsgu.buf); + + ::recvmsg(s.native_handle(), &msg, 0); + + int fd = -1; + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + while (cmsg != NULL) + { + if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) + { + std::memcpy(&fd, CMSG_DATA(cmsg), sizeof(fd)); + break; + } + cmsg = CMSG_NXTHDR(&msg, cmsg); + } + + if (fd != -1) + { + std::cout << "File descriptor received is: " << fd << "\n"; + FILE* f(::fdopen(fd, "w+")); + if (f) + { + ::fprintf(f, "stream_client writing to received fd #%d\n", fd); + ::fclose(f); + } + else + ::close(fd); + } + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) diff --git a/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp b/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp new file mode 100644 index 00000000000..5082185e75c --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/fd_passing_stream_server.cpp @@ -0,0 +1,160 @@ +// +// fd_passing_stream_server.cpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// Copyright (c) 2021 Heiko Hund (heiko at openvpn dot net) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +// Demonstrates how to pass file descriptors between processes with Asio. +// The client sends a file name to the server. The server opens the file and +// passes the associated file descriptor back to the client. + +#include <array> +#include <cstdio> +#include <cassert> +#include <iostream> +#include <memory> +#include "asio.hpp" + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +using asio::local::stream_protocol; + +class session + : public std::enable_shared_from_this<session> +{ +public: + session(stream_protocol::socket sock) + : socket_(std::move(sock)) + { + } + + void start() + { + do_read(); + } + +private: + void do_read() + { + auto self(shared_from_this()); + socket_.async_read_some(asio::buffer(data_), + [this, self](std::error_code ec, std::size_t length) + { + if (ec) + return; + + assert(length < data_.size()); + data_[length] = 0; + do_write(data_.data()); + }); + } + + void do_write(const char* filename) + { + auto self(shared_from_this()); + socket_.async_wait(stream_protocol::socket::wait_write, + [this, self, filename](std::error_code ec) + { + if (ec) + return; + + FILE* f(::fopen(filename, "w+")); + if (!f) + return; + + struct msghdr msg = {}; + char buf[] = { 0 }; + struct iovec iov = { buf, sizeof(buf) }; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + union + { + struct cmsghdr align; + char buf[CMSG_SPACE(sizeof(int))]; + } cmsgu; + msg.msg_control = cmsgu.buf; + msg.msg_controllen = sizeof(cmsgu.buf); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_len = CMSG_LEN(sizeof(int)); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + int fd = ::fileno(f); + std::memcpy(CMSG_DATA(cmsg), &fd, sizeof(int)); + + ssize_t s(::sendmsg(socket_.native_handle(), &msg, 0)); + ::fclose(f); + if (s != -1) + do_read(); + }); + } + + // The socket used to communicate with the client. + stream_protocol::socket socket_; + + // Buffer used to store data received from the client. + std::array<char, 1024> data_; +}; + +class server +{ +public: + server(asio::io_context& io_context, const std::string& file) + : acceptor_(io_context, stream_protocol::endpoint(file)) + { + do_accept(); + } + +private: + void do_accept() + { + acceptor_.async_accept( + [this](std::error_code ec, stream_protocol::socket socket) + { + if (!ec) + { + std::make_shared<session>(std::move(socket))->start(); + } + + do_accept(); + }); + } + + stream_protocol::acceptor acceptor_; +}; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: fd_passing_stream_server <socketfile>\n"; + std::cerr << "*** WARNING: existing file is removed ***\n"; + return 1; + } + + asio::io_context io_context; + + std::remove(argv[1]); + server s(io_context, argv[1]); + + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) diff --git a/3rdparty/asio/src/examples/cpp11/local/iostream_client.cpp b/3rdparty/asio/src/examples/cpp11/local/iostream_client.cpp new file mode 100644 index 00000000000..932f29d3459 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/iostream_client.cpp @@ -0,0 +1,61 @@ +// +// stream_client.cpp +// ~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <cstring> +#include <iostream> +#include "asio.hpp" + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +using asio::local::stream_protocol; + +constexpr std::size_t max_length = 1024; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: iostream_client <file>\n"; + return 1; + } + + stream_protocol::endpoint ep(argv[1]); + stream_protocol::iostream s(ep); + if (!s) + { + std::cerr << "Unable to connect: " << s.error().message() << std::endl; + return 1; + } + + std::cout << "Enter message: "; + char request[max_length]; + std::cin.getline(request, max_length); + size_t length = std::strlen(request); + s << request; + + char reply[max_length]; + s.read(reply, length); + std::cout << "Reply is: "; + std::cout.write(reply, length); + std::cout << "\n"; + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) diff --git a/3rdparty/asio/src/examples/cpp11/local/stream_client.cpp b/3rdparty/asio/src/examples/cpp11/local/stream_client.cpp new file mode 100644 index 00000000000..32f408933ca --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/stream_client.cpp @@ -0,0 +1,60 @@ +// +// stream_client.cpp +// ~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <cstdlib> +#include <cstring> +#include <iostream> +#include "asio.hpp" + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +using asio::local::stream_protocol; + +constexpr std::size_t max_length = 1024; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: stream_client <file>\n"; + return 1; + } + + asio::io_context io_context; + + stream_protocol::socket s(io_context); + s.connect(stream_protocol::endpoint(argv[1])); + + std::cout << "Enter message: "; + char request[max_length]; + std::cin.getline(request, max_length); + size_t request_length = std::strlen(request); + asio::write(s, asio::buffer(request, request_length)); + + char reply[max_length]; + size_t reply_length = asio::read(s, + asio::buffer(reply, request_length)); + std::cout << "Reply is: "; + std::cout.write(reply, reply_length); + std::cout << "\n"; + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) diff --git a/3rdparty/asio/src/examples/cpp11/local/stream_server.cpp b/3rdparty/asio/src/examples/cpp11/local/stream_server.cpp new file mode 100644 index 00000000000..85cd58f87d6 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/local/stream_server.cpp @@ -0,0 +1,121 @@ +// +// stream_server.cpp +// ~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <array> +#include <cstdio> +#include <iostream> +#include <memory> +#include "asio.hpp" + +#if defined(ASIO_HAS_LOCAL_SOCKETS) + +using asio::local::stream_protocol; + +class session + : public std::enable_shared_from_this<session> +{ +public: + session(stream_protocol::socket sock) + : socket_(std::move(sock)) + { + } + + void start() + { + do_read(); + } + +private: + void do_read() + { + auto self(shared_from_this()); + socket_.async_read_some(asio::buffer(data_), + [this, self](std::error_code ec, std::size_t length) + { + if (!ec) + do_write(length); + }); + } + + void do_write(std::size_t length) + { + auto self(shared_from_this()); + asio::async_write(socket_, + asio::buffer(data_, length), + [this, self](std::error_code ec, std::size_t /*length*/) + { + if (!ec) + do_read(); + }); + } + + // The socket used to communicate with the client. + stream_protocol::socket socket_; + + // Buffer used to store data received from the client. + std::array<char, 1024> data_; +}; + +class server +{ +public: + server(asio::io_context& io_context, const std::string& file) + : acceptor_(io_context, stream_protocol::endpoint(file)) + { + do_accept(); + } + +private: + void do_accept() + { + acceptor_.async_accept( + [this](std::error_code ec, stream_protocol::socket socket) + { + if (!ec) + { + std::make_shared<session>(std::move(socket))->start(); + } + + do_accept(); + }); + } + + stream_protocol::acceptor acceptor_; +}; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: stream_server <file>\n"; + std::cerr << "*** WARNING: existing file is removed ***\n"; + return 1; + } + + asio::io_context io_context; + + std::remove(argv[1]); + server s(io_context, argv[1]); + + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} + +#else // defined(ASIO_HAS_LOCAL_SOCKETS) +# error Local sockets not available on this platform. +#endif // defined(ASIO_HAS_LOCAL_SOCKETS) |