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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <thrift/thrift-config.h>
#include <cstring>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SYS_POLL_H
#include <sys/poll.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <fcntl.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <thrift/transport/TSocket.h>
#include <thrift/transport/TServerSocket.h>
#include <thrift/transport/PlatformSocket.h>
#include <boost/shared_ptr.hpp>
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif
#ifndef SOCKOPT_CAST_T
# ifndef _WIN32
# define SOCKOPT_CAST_T void
# else
# define SOCKOPT_CAST_T char
# endif // _WIN32
#endif
template<class T>
inline const SOCKOPT_CAST_T* const_cast_sockopt(const T* v) {
return reinterpret_cast<const SOCKOPT_CAST_T*>(v);
}
template<class T>
inline SOCKOPT_CAST_T* cast_sockopt(T* v) {
return reinterpret_cast<SOCKOPT_CAST_T*>(v);
}
namespace apache { namespace thrift { namespace transport {
using namespace std;
using boost::shared_ptr;
TServerSocket::TServerSocket(int port) :
port_(port),
serverSocket_(THRIFT_INVALID_SOCKET),
acceptBacklog_(DEFAULT_BACKLOG),
sendTimeout_(0),
recvTimeout_(0),
accTimeout_(-1),
retryLimit_(0),
retryDelay_(0),
tcpSendBuffer_(0),
tcpRecvBuffer_(0),
keepAlive_(false),
intSock1_(THRIFT_INVALID_SOCKET),
intSock2_(THRIFT_INVALID_SOCKET)
{}
TServerSocket::TServerSocket(int port, int sendTimeout, int recvTimeout) :
port_(port),
serverSocket_(THRIFT_INVALID_SOCKET),
acceptBacklog_(DEFAULT_BACKLOG),
sendTimeout_(sendTimeout),
recvTimeout_(recvTimeout),
accTimeout_(-1),
retryLimit_(0),
retryDelay_(0),
tcpSendBuffer_(0),
tcpRecvBuffer_(0),
keepAlive_(false),
intSock1_(THRIFT_INVALID_SOCKET),
intSock2_(THRIFT_INVALID_SOCKET)
{}
TServerSocket::TServerSocket(string path) :
port_(0),
path_(path),
serverSocket_(THRIFT_INVALID_SOCKET),
acceptBacklog_(DEFAULT_BACKLOG),
sendTimeout_(0),
recvTimeout_(0),
accTimeout_(-1),
retryLimit_(0),
retryDelay_(0),
tcpSendBuffer_(0),
tcpRecvBuffer_(0),
keepAlive_(false),
intSock1_(THRIFT_INVALID_SOCKET),
intSock2_(THRIFT_INVALID_SOCKET)
{}
TServerSocket::~TServerSocket() {
close();
}
void TServerSocket::setSendTimeout(int sendTimeout) {
sendTimeout_ = sendTimeout;
}
void TServerSocket::setRecvTimeout(int recvTimeout) {
recvTimeout_ = recvTimeout;
}
void TServerSocket::setAcceptTimeout(int accTimeout) {
accTimeout_ = accTimeout;
}
void TServerSocket::setAcceptBacklog(int accBacklog) {
acceptBacklog_ = accBacklog;
}
void TServerSocket::setRetryLimit(int retryLimit) {
retryLimit_ = retryLimit;
}
void TServerSocket::setRetryDelay(int retryDelay) {
retryDelay_ = retryDelay;
}
void TServerSocket::setTcpSendBuffer(int tcpSendBuffer) {
tcpSendBuffer_ = tcpSendBuffer;
}
void TServerSocket::setTcpRecvBuffer(int tcpRecvBuffer) {
tcpRecvBuffer_ = tcpRecvBuffer;
}
void TServerSocket::listen() {
#ifdef _WIN32
TWinsockSingleton::create();
#endif // _WIN32
THRIFT_SOCKET sv[2];
if (-1 == THRIFT_SOCKETPAIR(AF_LOCAL, SOCK_STREAM, 0, sv)) {
GlobalOutput.perror("TServerSocket::listen() socketpair() ", THRIFT_GET_SOCKET_ERROR);
intSock1_ = THRIFT_INVALID_SOCKET;
intSock2_ = THRIFT_INVALID_SOCKET;
} else {
intSock1_ = sv[1];
intSock2_ = sv[0];
}
struct addrinfo hints, *res, *res0;
int error;
char port[sizeof("65536") + 1];
std::memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
sprintf(port, "%d", port_);
// Wildcard address
error = getaddrinfo(NULL, port, &hints, &res0);
if (error) {
GlobalOutput.printf("getaddrinfo %d: %s", error, THRIFT_GAI_STRERROR(error));
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not resolve host for server socket.");
}
// Pick the ipv6 address first since ipv4 addresses can be mapped
// into ipv6 space.
for (res = res0; res; res = res->ai_next) {
if (res->ai_family == AF_INET6 || res->ai_next == NULL)
break;
}
if (! path_.empty()) {
serverSocket_ = socket(PF_UNIX, SOCK_STREAM, IPPROTO_IP);
} else {
serverSocket_ = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
}
if (serverSocket_ == THRIFT_INVALID_SOCKET) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() socket() ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not create server socket.", errno_copy);
}
// Set THRIFT_NO_SOCKET_CACHING to prevent 2MSL delay on accept
int one = 1;
if (-1 == setsockopt(serverSocket_, SOL_SOCKET, THRIFT_NO_SOCKET_CACHING,
cast_sockopt(&one), sizeof(one))) {
//ignore errors coming out of this setsockopt on Windows. This is because
//SO_EXCLUSIVEADDRUSE requires admin privileges on WinXP, but we don't
//want to force servers to be an admin.
#ifndef _WIN32
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() THRIFT_NO_SOCKET_CACHING ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set THRIFT_NO_SOCKET_CACHING", errno_copy);
#endif
}
// Set TCP buffer sizes
if (tcpSendBuffer_ > 0) {
if (-1 == setsockopt(serverSocket_, SOL_SOCKET, SO_SNDBUF,
cast_sockopt(&tcpSendBuffer_), sizeof(tcpSendBuffer_))) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() SO_SNDBUF ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set SO_SNDBUF", errno_copy);
}
}
if (tcpRecvBuffer_ > 0) {
if (-1 == setsockopt(serverSocket_, SOL_SOCKET, SO_RCVBUF,
cast_sockopt(&tcpRecvBuffer_), sizeof(tcpRecvBuffer_))) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() SO_RCVBUF ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set SO_RCVBUF", errno_copy);
}
}
// Defer accept
#ifdef TCP_DEFER_ACCEPT
if (-1 == setsockopt(serverSocket_, SOL_SOCKET, TCP_DEFER_ACCEPT,
&one, sizeof(one))) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() TCP_DEFER_ACCEPT ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set TCP_DEFER_ACCEPT", errno_copy);
}
#endif // #ifdef TCP_DEFER_ACCEPT
#ifdef IPV6_V6ONLY
if (res->ai_family == AF_INET6 && path_.empty()) {
int zero = 0;
if (-1 == setsockopt(serverSocket_, IPPROTO_IPV6, IPV6_V6ONLY,
cast_sockopt(&zero), sizeof(zero))) {
GlobalOutput.perror("TServerSocket::listen() IPV6_V6ONLY ", THRIFT_GET_SOCKET_ERROR);
}
}
#endif // #ifdef IPV6_V6ONLY
// Turn linger off, don't want to block on calls to close
struct linger ling = {0, 0};
if (-1 == setsockopt(serverSocket_, SOL_SOCKET, SO_LINGER,
cast_sockopt(&ling), sizeof(ling))) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() SO_LINGER ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set SO_LINGER", errno_copy);
}
// Unix Sockets do not need that
if (path_.empty()) {
// TCP Nodelay, speed over bandwidth
if (-1 == setsockopt(serverSocket_, IPPROTO_TCP, TCP_NODELAY,
cast_sockopt(&one), sizeof(one))) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() setsockopt() TCP_NODELAY ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not set TCP_NODELAY", errno_copy);
}
}
// Set NONBLOCK on the accept socket
int flags = THRIFT_FCNTL(serverSocket_, THRIFT_F_GETFL, 0);
if (flags == -1) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() THRIFT_FCNTL() THRIFT_F_GETFL ", errno_copy);
throw TTransportException(TTransportException::NOT_OPEN, "THRIFT_FCNTL() failed", errno_copy);
}
if (-1 == THRIFT_FCNTL(serverSocket_, THRIFT_F_SETFL, flags | THRIFT_O_NONBLOCK)) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() THRIFT_FCNTL() THRIFT_O_NONBLOCK ", errno_copy);
throw TTransportException(TTransportException::NOT_OPEN, "THRIFT_FCNTL() failed", errno_copy);
}
// prepare the port information
// we may want to try to bind more than once, since THRIFT_NO_SOCKET_CACHING doesn't
// always seem to work. The client can configure the retry variables.
int retries = 0;
if (! path_.empty()) {
#ifndef _WIN32
// Unix Domain Socket
size_t len = path_.size() + 1;
if (len > sizeof(((sockaddr_un*)NULL)->sun_path)) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TSocket::listen() Unix Domain socket path too long", errno_copy);
throw TTransportException(TTransportException::NOT_OPEN, " Unix Domain socket path too long");
}
struct sockaddr_un address;
address.sun_family = AF_UNIX;
memcpy(address.sun_path, path_.c_str(), len);
socklen_t structlen = static_cast<socklen_t>(sizeof(address));
do {
if (0 == ::bind(serverSocket_, (struct sockaddr *) &address, structlen)) {
break;
}
// use short circuit evaluation here to only sleep if we need to
} while ((retries++ < retryLimit_) && (THRIFT_SLEEP_SEC(retryDelay_) == 0));
#else
GlobalOutput.perror("TSocket::open() Unix Domain socket path not supported on windows", -99);
throw TTransportException(TTransportException::NOT_OPEN, " Unix Domain socket path not supported");
#endif
} else {
do {
if (0 == ::bind(serverSocket_, res->ai_addr, static_cast<int>(res->ai_addrlen))) {
break;
}
// use short circuit evaluation here to only sleep if we need to
} while ((retries++ < retryLimit_) && (THRIFT_SLEEP_SEC(retryDelay_) == 0));
// free addrinfo
freeaddrinfo(res0);
// retrieve bind info
if (port_ == 0 && retries <= retryLimit_) {
struct sockaddr sa;
socklen_t len = sizeof(sa);
std::memset(&sa, 0, len);
if (::getsockname(serverSocket_, &sa, &len) < 0) {
int errno_copy = errno;
GlobalOutput.perror("TServerSocket::getPort() getsockname() ", errno_copy);
}
else {
if (sa.sa_family == AF_INET6) {
const struct sockaddr_in6*
sin = reinterpret_cast<const struct sockaddr_in6 *>(&sa);
port_ = ntohs(sin->sin6_port);
}
else {
const struct sockaddr_in*
sin = reinterpret_cast<const struct sockaddr_in *>(&sa);
port_ = ntohs(sin->sin_port);
}
}
}
}
// throw an error if we failed to bind properly
if (retries > retryLimit_) {
char errbuf[1024];
if (! path_.empty()) {
sprintf(errbuf, "TServerSocket::listen() PATH %s", path_.c_str());
}
else {
sprintf(errbuf, "TServerSocket::listen() BIND %d", port_);
}
GlobalOutput(errbuf);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not bind",
THRIFT_GET_SOCKET_ERROR);
}
if(listenCallback_) listenCallback_(serverSocket_);
// Call listen
if (-1 == ::listen(serverSocket_, acceptBacklog_)) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::listen() listen() ", errno_copy);
close();
throw TTransportException(TTransportException::NOT_OPEN, "Could not listen", errno_copy);
}
// The socket is now listening!
}
int TServerSocket::getPort() {
return port_;
}
shared_ptr<TTransport> TServerSocket::acceptImpl() {
if (serverSocket_ == THRIFT_INVALID_SOCKET) {
throw TTransportException(TTransportException::NOT_OPEN, "TServerSocket not listening");
}
struct THRIFT_POLLFD fds[2];
int maxEintrs = 5;
int numEintrs = 0;
while (true) {
std::memset(fds, 0 , sizeof(fds));
fds[0].fd = serverSocket_;
fds[0].events = THRIFT_POLLIN;
if (intSock2_ != THRIFT_INVALID_SOCKET) {
fds[1].fd = intSock2_;
fds[1].events = THRIFT_POLLIN;
}
/*
TODO: if THRIFT_EINTR is received, we'll restart the timeout.
To be accurate, we need to fix this in the future.
*/
int ret = THRIFT_POLL(fds, 2, accTimeout_);
if (ret < 0) {
// error cases
if (THRIFT_GET_SOCKET_ERROR == THRIFT_EINTR && (numEintrs++ < maxEintrs)) {
// THRIFT_EINTR needs to be handled manually and we can tolerate
// a certain number
continue;
}
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::acceptImpl() THRIFT_POLL() ", errno_copy);
throw TTransportException(TTransportException::UNKNOWN, "Unknown", errno_copy);
} else if (ret > 0) {
// Check for an interrupt signal
if (intSock2_ != THRIFT_INVALID_SOCKET
&& (fds[1].revents & THRIFT_POLLIN)) {
int8_t buf;
if (-1 == recv(intSock2_, cast_sockopt(&buf), sizeof(int8_t), 0)) {
GlobalOutput.perror("TServerSocket::acceptImpl() recv() interrupt ", THRIFT_GET_SOCKET_ERROR);
}
throw TTransportException(TTransportException::INTERRUPTED);
}
// Check for the actual server socket being ready
if (fds[0].revents & THRIFT_POLLIN) {
break;
}
} else {
GlobalOutput("TServerSocket::acceptImpl() THRIFT_POLL 0");
throw TTransportException(TTransportException::UNKNOWN);
}
}
struct sockaddr_storage clientAddress;
int size = sizeof(clientAddress);
THRIFT_SOCKET clientSocket = ::accept(serverSocket_,
(struct sockaddr *) &clientAddress,
(socklen_t *) &size);
if (clientSocket == -1) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::acceptImpl() ::accept() ", errno_copy);
throw TTransportException(TTransportException::UNKNOWN, "accept()", errno_copy);
}
// Make sure client socket is blocking
int flags = THRIFT_FCNTL(clientSocket, THRIFT_F_GETFL, 0);
if (flags == -1) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::acceptImpl() THRIFT_FCNTL() THRIFT_F_GETFL ", errno_copy);
throw TTransportException(TTransportException::UNKNOWN, "THRIFT_FCNTL(THRIFT_F_GETFL)", errno_copy);
}
if (-1 == THRIFT_FCNTL(clientSocket, THRIFT_F_SETFL, flags & ~THRIFT_O_NONBLOCK)) {
int errno_copy = THRIFT_GET_SOCKET_ERROR;
GlobalOutput.perror("TServerSocket::acceptImpl() THRIFT_FCNTL() THRIFT_F_SETFL ~THRIFT_O_NONBLOCK ", errno_copy);
throw TTransportException(TTransportException::UNKNOWN, "THRIFT_FCNTL(THRIFT_F_SETFL)", errno_copy);
}
shared_ptr<TSocket> client = createSocket(clientSocket);
if (sendTimeout_ > 0) {
client->setSendTimeout(sendTimeout_);
}
if (recvTimeout_ > 0) {
client->setRecvTimeout(recvTimeout_);
}
if (keepAlive_) {
client->setKeepAlive(keepAlive_);
}
client->setCachedAddress((sockaddr*) &clientAddress, size);
if(acceptCallback_) acceptCallback_(clientSocket);
return client;
}
shared_ptr<TSocket> TServerSocket::createSocket(THRIFT_SOCKET clientSocket) {
return shared_ptr<TSocket>(new TSocket(clientSocket));
}
void TServerSocket::interrupt() {
if (intSock1_ != THRIFT_INVALID_SOCKET) {
int8_t byte = 0;
if (-1 == send(intSock1_, cast_sockopt(&byte), sizeof(int8_t), 0)) {
GlobalOutput.perror("TServerSocket::interrupt() send() ", THRIFT_GET_SOCKET_ERROR);
}
}
}
void TServerSocket::close() {
if (serverSocket_ != THRIFT_INVALID_SOCKET) {
shutdown(serverSocket_, THRIFT_SHUT_RDWR);
::THRIFT_CLOSESOCKET(serverSocket_);
}
if (intSock1_ != THRIFT_INVALID_SOCKET) {
::THRIFT_CLOSESOCKET(intSock1_);
}
if (intSock2_ != THRIFT_INVALID_SOCKET) {
::THRIFT_CLOSESOCKET(intSock2_);
}
serverSocket_ = THRIFT_INVALID_SOCKET;
intSock1_ = THRIFT_INVALID_SOCKET;
intSock2_ = THRIFT_INVALID_SOCKET;
}
}}} // apache::thrift::transport
|