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#include "StarTcp.hpp"
#include "StarLogging.hpp"
#include "StarNetImpl.hpp"
namespace Star {
TcpSocketPtr TcpSocket::connectTo(HostAddressWithPort const& addressWithPort) {
auto socket = TcpSocketPtr(new TcpSocket(addressWithPort.address().mode()));
socket->connect(addressWithPort);
return socket;
}
TcpSocketPtr TcpSocket::listen(HostAddressWithPort const& addressWithPort) {
auto socket = TcpSocketPtr(new TcpSocket(addressWithPort.address().mode()));
socket->bind(addressWithPort);
((Socket&)(*socket)).listen(32);
return socket;
}
TcpSocketPtr TcpSocket::accept() {
ReadLocker locker(m_mutex);
if (m_socketMode != SocketMode::Bound)
throw SocketClosedException("TcpSocket not bound in TcpSocket::accept");
struct sockaddr_storage sockAddr;
socklen_t sockAddrLen = sizeof(sockAddr);
auto socketDesc = ::accept(m_impl->socketDesc, (struct sockaddr*)&sockAddr, &sockAddrLen);
if (invalidSocketDescriptor(socketDesc)) {
if (netErrorInterrupt())
return {};
throw NetworkException(strf("Cannot accept connection: {}", netErrorString()));
}
auto socketImpl = make_shared<SocketImpl>();
socketImpl->socketDesc = socketDesc;
#if defined STAR_SYSTEM_MACOS || defined STAR_SYSTEM_FREEBSD
// Don't generate sigpipe
int set = 1;
socketImpl->setSockOpt(SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
#endif
TcpSocketPtr sockPtr(new TcpSocket(m_localAddress.address().mode(), socketImpl));
sockPtr->m_localAddress = m_localAddress;
setAddressFromNative(sockPtr->m_remoteAddress, m_localAddress.address().mode(), &sockAddr);
Logger::debug("accept from {} ({})", sockPtr->m_remoteAddress, sockPtr->m_impl->socketDesc);
return sockPtr;
}
void TcpSocket::setNoDelay(bool noDelay) {
ReadLocker locker(m_mutex);
checkOpen("TcpSocket::setNoDelay");
int flag = noDelay ? 1 : 0;
m_impl->setSockOpt(IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(flag));
}
size_t TcpSocket::receive(char* data, size_t size) {
ReadLocker locker(m_mutex);
checkOpen("TcpSocket::receive");
if (m_socketMode == SocketMode::Closed)
throw SocketClosedException("TcpSocket not open in TcpSocket::receive");
int flags = 0;
#ifdef STAR_SYSTEM_LINUX
// Don't generate sigpipe
flags |= MSG_NOSIGNAL;
#endif
auto r = ::recv(m_impl->socketDesc, data, size, flags);
if (r < 0) {
if (m_socketMode == SocketMode::Shutdown) {
throw SocketClosedException("Connection closed");
} else if (netErrorConnectionReset()) {
doShutdown();
throw SocketClosedException("Connection reset");
} else if (netErrorInterrupt()) {
r = 0;
} else {
throw NetworkException(strf("tcp recv error: {}", netErrorString()));
}
}
return r;
}
size_t TcpSocket::send(char const* data, size_t size) {
ReadLocker locker(m_mutex);
checkOpen("TcpSocket::send");
if (m_socketMode == SocketMode::Closed)
throw SocketClosedException("TcpSocket not open in TcpSocket::send");
int flags = 0;
#ifdef STAR_SYSTEM_LINUX
// Don't generate sigpipe
flags |= MSG_NOSIGNAL;
#endif
auto w = ::send(m_impl->socketDesc, data, size, flags);
if (w < 0) {
if (m_socketMode == SocketMode::Shutdown) {
throw SocketClosedException("Connection closed");
} else if (netErrorConnectionReset()) {
doShutdown();
throw SocketClosedException("Connection reset");
} else if (netErrorInterrupt()) {
w = 0;
} else {
throw NetworkException(strf("tcp send error: {}", netErrorString()));
}
}
return w;
}
HostAddressWithPort TcpSocket::localAddress() const {
ReadLocker locker(m_mutex);
return m_localAddress;
}
HostAddressWithPort TcpSocket::remoteAddress() const {
ReadLocker locker(m_mutex);
return m_remoteAddress;
}
TcpSocket::TcpSocket(NetworkMode networkMode) : Socket(SocketType::Tcp, networkMode) {}
TcpSocket::TcpSocket(NetworkMode networkMode, SocketImplPtr impl) : Socket(networkMode, impl, SocketMode::Connected) {}
void TcpSocket::connect(HostAddressWithPort const& addressWithPort) {
WriteLocker locker(m_mutex);
checkOpen("TcpSocket::connect");
if (m_networkMode != addressWithPort.address().mode())
throw NetworkException("Socket address type mismatch between address and socket.");
struct sockaddr_storage sockAddr;
socklen_t sockAddrLen;
setNativeFromAddress(addressWithPort, &sockAddr, &sockAddrLen);
if (::connect(m_impl->socketDesc, (struct sockaddr*)&sockAddr, sockAddrLen) < 0)
throw NetworkException(strf("cannot connect to {}: {}", addressWithPort, netErrorString()));
#if defined STAR_SYSTEM_MACOS || defined STAR_SYSTEM_FREEBSD
// Don't generate sigpipe
int set = 1;
m_impl->setSockOpt(SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(set));
#endif
m_socketMode = SocketMode::Connected;
m_remoteAddress = addressWithPort;
}
TcpServer::TcpServer(HostAddressWithPort const& address) : m_hostAddress(address) {
m_hostAddress = address;
m_listenSocket = TcpSocket::listen(address);
m_listenSocket->setNonBlocking(true);
Logger::debug("TcpServer listening on: {}", address);
}
TcpServer::TcpServer(uint16_t port) : TcpServer(HostAddressWithPort("*", port)) {}
TcpServer::~TcpServer() {
stop();
}
void TcpServer::stop() {
m_listenSocket->shutdown();
m_callbackThread.finish();
m_listenSocket->close();
}
bool TcpServer::isListening() const {
return m_listenSocket->isActive();
}
TcpSocketPtr TcpServer::accept(unsigned timeout) {
MutexLocker locker(m_mutex);
Socket::poll({{m_listenSocket, {true, false}}}, timeout);
try {
return m_listenSocket->accept();
} catch (SocketClosedException const&) {
return {};
}
}
void TcpServer::setAcceptCallback(AcceptCallback callback, unsigned timeout) {
MutexLocker locker(m_mutex);
m_callback = callback;
if (m_listenSocket->isActive() && !m_callbackThread) {
m_callbackThread = Thread::invoke("TcpServer::acceptCallback", [this, timeout]() {
try {
while (true) {
TcpSocketPtr conn;
try {
conn = accept(timeout);
} catch (NetworkException const& e) {
Logger::error("TcpServer caught exception accepting connection {}", outputException(e, false));
}
if (conn)
m_callback(conn);
if (!m_listenSocket->isActive())
break;
}
} catch (std::exception const& e) {
Logger::error("TcpServer will close, listener thread caught exception: {}", outputException(e, true));
m_listenSocket->close();
}
});
}
}
}
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