mirror of https://gitee.com/bigwinds/arangodb
302 lines
10 KiB
C++
Executable File
302 lines
10 KiB
C++
Executable File
////////////////////////////////////////////////////////////////////////////////
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/// @brief connection endpoint, ip-based
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. O
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/// @author Jan Steemann
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/// @author Copyright 2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "EndpointIp.h"
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#include "Basics/FileUtils.h"
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#include <Basics/StringUtils.h>
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#include "Logger/Logger.h"
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#include "Rest/Endpoint.h"
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using namespace triagens::basics;
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using namespace triagens::rest;
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// -----------------------------------------------------------------------------
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// --SECTION-- EndpointIp
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// --SECTION-- static initialisers
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Rest
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief set port if none specified
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////////////////////////////////////////////////////////////////////////////////
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const uint16_t EndpointIp::_defaultPort = 8529;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief default host if none specified
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////////////////////////////////////////////////////////////////////////////////
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const std::string EndpointIp::_defaultHost = "127.0.0.1";
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors / destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Rest
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates an IP socket endpoint
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////////////////////////////////////////////////////////////////////////////////
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EndpointIp::EndpointIp (const Endpoint::EndpointType type,
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const Endpoint::DomainType domainType,
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const Endpoint::ProtocolType protocol,
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const Endpoint::EncryptionType encryption,
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const std::string& specification,
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int listenBacklog,
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const std::string& host,
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const uint16_t port) :
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Endpoint(type, domainType, protocol, encryption, specification, listenBacklog), _host(host), _port(port) {
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assert(domainType == DOMAIN_IPV4 || domainType == Endpoint::DOMAIN_IPV6);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys an IPv4 socket endpoint
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////////////////////////////////////////////////////////////////////////////////
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EndpointIp::~EndpointIp () {
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if (_connected) {
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disconnect();
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- private methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Rest
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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socket_t EndpointIp::connectSocket (const struct addrinfo* aip, double connectTimeout, double requestTimeout) {
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// set address and port
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char host[NI_MAXHOST], serv[NI_MAXSERV];
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if (::getnameinfo(aip->ai_addr, aip->ai_addrlen,
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host, sizeof(host),
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serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV) == 0) {
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LOGGER_TRACE << "bind to address '" << string(host) << "' port '" << _port << "'";
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}
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socket_t listenSocket = ::socket(aip->ai_family, aip->ai_socktype, aip->ai_protocol);
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if (listenSocket == INVALID_SOCKET) {
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return 0;
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}
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if (_type == ENDPOINT_SERVER) {
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// try to reuse address
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int opt = 1;
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if (setsockopt(listenSocket, SOL_SOCKET, SO_REUSEADDR, reinterpret_cast<char*> (&opt), sizeof (opt)) == -1) {
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LOGGER_ERROR << "setsockopt failed with " << errno << " (" << strerror(errno) << ")";
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TRI_CLOSE(listenSocket);
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return 0;
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}
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LOGGER_TRACE << "reuse address flag set";
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// server needs to bind to socket
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int result = ::bind(listenSocket, aip->ai_addr, aip->ai_addrlen);
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if (result != 0) {
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// error
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TRI_CLOSE_SOCKET(listenSocket);
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return 0;
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}
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// listen for new connection, executed for server endpoints only
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LOGGER_TRACE << "using backlog size " << _listenBacklog;
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result = ::listen(listenSocket, _listenBacklog);
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if (result == SOCKET_ERROR) {
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TRI_CLOSE_SOCKET(listenSocket);
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// todo: get the correct error code using WSAGetLastError for windows
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LOGGER_ERROR << "listen failed with " << errno << " (" << strerror(errno) << ")";
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return 0;
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}
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}
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else if (_type == ENDPOINT_CLIENT) {
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// connect to endpoint, executed for client endpoints only
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// set timeout
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setTimeout(listenSocket, connectTimeout);
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int result = ::connect(listenSocket, (const struct sockaddr*) aip->ai_addr, aip->ai_addrlen);
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if ( result == SOCKET_ERROR) {
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TRI_CLOSE_SOCKET(listenSocket);
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return 0;
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}
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}
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if (!setSocketFlags(listenSocket)) { // set some common socket flags for a server
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TRI_CLOSE_SOCKET(listenSocket);
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return 0;
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}
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if (_type == ENDPOINT_CLIENT) {
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setTimeout(listenSocket, requestTimeout);
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}
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_connected = true;
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_socket = listenSocket;
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return _socket;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Rest
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief connect the endpoint
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////////////////////////////////////////////////////////////////////////////////
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socket_t EndpointIp::connect (double connectTimeout, double requestTimeout) {
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struct addrinfo* result = 0;
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struct addrinfo* aip;
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struct addrinfo hints;
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int error;
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LOGGER_DEBUG << "connecting to ip endpoint " << _specification;
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assert(_socket == 0);
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assert(!_connected);
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memset(&hints, 0, sizeof (struct addrinfo));
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hints.ai_family = getDomain(); // Allow IPv4 or IPv6
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hints.ai_flags = AI_PASSIVE | AI_NUMERICSERV | AI_ALL;
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hints.ai_socktype = SOCK_STREAM;
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string portString = StringUtils::itoa(_port);
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error = getaddrinfo(_host.c_str(), portString.c_str(), &hints, &result);
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if (error != 0) {
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LOGGER_ERROR << "getaddrinfo for host: " << _host.c_str() << " => " << gai_strerror(error);
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if (result != 0) {
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freeaddrinfo(result);
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}
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return 0;
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}
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socket_t listenSocket = 0;
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// Try all returned addresses until one works
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for (aip = result; aip != NULL; aip = aip->ai_next) {
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// try to bind the address info pointer
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listenSocket = connectSocket(aip, connectTimeout, requestTimeout);
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if (listenSocket != 0) {
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// OK
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break;
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}
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}
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freeaddrinfo(result);
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return listenSocket;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys an IPv4 socket endpoint
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////////////////////////////////////////////////////////////////////////////////
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void EndpointIp::disconnect () {
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if (_connected) {
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assert(_socket);
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_connected = false;
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TRI_CLOSE_SOCKET(_socket);
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_socket = 0;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief init an incoming connection
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////////////////////////////////////////////////////////////////////////////////
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bool EndpointIp::initIncoming (socket_t incoming) {
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// disable nagle's algorithm
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int n = 1;
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int res = setsockopt(incoming, IPPROTO_TCP, TCP_NODELAY, (char*) &n, sizeof(n));
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if (res != 0 ) {
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// todo: get correct windows error code
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LOGGER_WARNING << "setsockopt failed with " << errno << " (" << strerror(errno) << ")";
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return false;
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}
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return setSocketFlags(incoming);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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