diff options
Diffstat (limited to 'src/Socket.cpp')
-rw-r--r-- | src/Socket.cpp | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/src/Socket.cpp b/src/Socket.cpp deleted file mode 100644 index 08cda68..0000000 --- a/src/Socket.cpp +++ /dev/null @@ -1,275 +0,0 @@ -/* - Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the - Queen in Right of Canada (Communications Research Center Canada) - - Copyright (C) 2018 - Matthias P. Braendli, matthias.braendli@mpb.li - - http://opendigitalradio.org -*/ - -/* - This file is part of ODR-DabMod. - - ODR-DabMod is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as - published by the Free Software Foundation, either version 3 of the - License, or (at your option) any later version. - - ODR-DabMod is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with ODR-DabMod. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "Socket.h" -#include "Log.h" -#include <fcntl.h> - -TCPSocket::TCPSocket() -{ - if ((m_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) { - throw std::runtime_error("Can't create TCP socket"); - } - -#if defined(HAVE_SO_NOSIGPIPE) - int val = 1; - if (setsockopt(m_sock, SOL_SOCKET, SO_NOSIGPIPE, - &val, sizeof(val)) < 0) { - throw std::runtime_error("Can't set SO_NOSIGPIPE"); - } -#endif -} - -TCPSocket::~TCPSocket() -{ - if (m_sock != -1) { - ::close(m_sock); - } -} - -TCPSocket::TCPSocket(TCPSocket&& other) -{ - m_sock = other.m_sock; - - if (other.m_sock != -1) { - other.m_sock = -1; - } -} - -TCPSocket& TCPSocket::operator=(TCPSocket&& other) -{ - m_sock = other.m_sock; - - if (other.m_sock != -1) { - other.m_sock = -1; - } - - return *this; -} - -bool TCPSocket::valid() const -{ - return m_sock != -1; -} - -void TCPSocket::connect(const std::string& hostname, int port) -{ - struct sockaddr_in addr; - addr.sin_family = PF_INET; - addr.sin_addr.s_addr = htons(INADDR_ANY); - addr.sin_port = htons(port); - - hostent *host = gethostbyname(hostname.c_str()); - if (host) { - addr.sin_addr = *(in_addr *)(host->h_addr); - } - else { - std::string errstr(strerror(errno)); - throw std::runtime_error( - "could not resolve hostname " + - hostname + ":" + std::to_string(port) + - " : " + errstr); - } - - int ret = ::connect(m_sock, (struct sockaddr*)&addr, sizeof(addr)); - if (ret == -1 and errno != EINPROGRESS) { - std::string errstr(strerror(errno)); - throw std::runtime_error( - "could not connect to " + - hostname + ":" + std::to_string(port) + - " : " + errstr); - } -} - -void TCPSocket::listen(int port) -{ - struct sockaddr_in addr; - addr.sin_family = AF_INET; - addr.sin_port = htons(port); - addr.sin_addr.s_addr = htonl(INADDR_ANY); - - const int reuse = 1; - if (setsockopt(m_sock, SOL_SOCKET, SO_REUSEADDR, - &reuse, sizeof(reuse)) < 0) { - throw std::runtime_error("Can't reuse address for TCP socket"); - } - - if (::bind(m_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) { - close(); - throw std::runtime_error("Can't bind TCP socket"); - } - - if (::listen(m_sock, 1) < 0) { - close(); - m_sock = -1; - throw std::runtime_error("Can't listen TCP socket"); - } - -} - -void TCPSocket::close() -{ - ::close(m_sock); - m_sock = -1; -} - -TCPSocket TCPSocket::accept_with_timeout(int timeout_ms, struct sockaddr_in *client) -{ - struct pollfd fds[1]; - fds[0].fd = m_sock; - fds[0].events = POLLIN; - - int retval = poll(fds, 1, timeout_ms); - - if (retval == -1) { - std::string errstr(strerror(errno)); - throw std::runtime_error("TCP Socket accept error: " + errstr); - } - else if (retval > 0) { - socklen_t client_len = sizeof(struct sockaddr_in); - int sockfd = accept(m_sock, (struct sockaddr*)&client, &client_len); - TCPSocket s(sockfd); - return s; - } - else { - TCPSocket s(-1); - return s; - } -} - -ssize_t TCPSocket::sendall(const void *buffer, size_t buflen) -{ - uint8_t *buf = (uint8_t*)buffer; - while (buflen > 0) { - /* On Linux, the MSG_NOSIGNAL flag ensures that the process - * would not receive a SIGPIPE and die. - * Other systems have SO_NOSIGPIPE set on the socket for the - * same effect. */ -#if defined(HAVE_MSG_NOSIGNAL) - const int flags = MSG_NOSIGNAL; -#else - const int flags = 0; -#endif - ssize_t sent = ::send(m_sock, buf, buflen, flags); - if (sent < 0) { - return -1; - } - else { - buf += sent; - buflen -= sent; - } - } - return buflen; -} - -ssize_t TCPSocket::recv(void *buffer, size_t length, int flags) -{ - ssize_t ret = ::recv(m_sock, buffer, length, flags); - if (ret == -1) { - std::string errstr(strerror(errno)); - throw std::runtime_error("TCP receive error: " + errstr); - } - return ret; -} - -ssize_t TCPSocket::recv(void *buffer, size_t length, int flags, int timeout_ms) -{ - struct pollfd fds[1]; - fds[0].fd = m_sock; - fds[0].events = POLLIN; - - int retval = poll(fds, 1, timeout_ms); - - if (retval == -1 and errno == EINTR) { - throw Interrupted(); - } - else if (retval == -1) { - std::string errstr(strerror(errno)); - throw std::runtime_error("TCP receive with poll() error: " + errstr); - } - else if (retval > 0 and (fds[0].revents | POLLIN)) { - ssize_t ret = ::recv(m_sock, buffer, length, flags); - if (ret == -1) { - if (errno == ECONNREFUSED) { - return 0; - } - std::string errstr(strerror(errno)); - throw std::runtime_error("TCP receive after poll() error: " + errstr); - } - return ret; - } - else { - throw Timeout(); - } -} - -TCPSocket::TCPSocket(int sockfd) { - m_sock = sockfd; -} - -void TCPClient::connect(const std::string& hostname, int port) -{ - m_hostname = hostname; - m_port = port; - reconnect(); -} - -ssize_t TCPClient::recv(void *buffer, size_t length, int flags, int timeout_ms) -{ - try { - ssize_t ret = m_sock.recv(buffer, length, flags, timeout_ms); - - if (ret == 0) { - m_sock.close(); - - TCPSocket newsock; - m_sock = std::move(newsock); - reconnect(); - } - - return ret; - } - catch (const TCPSocket::Interrupted&) { - return -1; - } - catch (const TCPSocket::Timeout&) { - return 0; - } - - return 0; -} - -void TCPClient::reconnect() -{ - int flags = fcntl(m_sock.m_sock, F_GETFL); - if (fcntl(m_sock.m_sock, F_SETFL, flags | O_NONBLOCK) == -1) { - std::string errstr(strerror(errno)); - throw std::runtime_error("TCP: Could not set O_NONBLOCK: " + errstr); - } - - m_sock.connect(m_hostname, m_port); -} |