/
tc_transceiver.cpp
1404 lines (1136 loc) · 29.4 KB
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tc_transceiver.cpp
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#include "util/tc_transceiver.h"
#include "util/tc_logger.h"
#if TARS_SSL
#include "util/tc_openssl.h"
#endif
#include <sstream>
namespace tars
{
class CloseClourse
{
public:
CloseClourse(TC_Transceiver* trans, TC_Transceiver::CloseReason reason, const string& err) : _trans(trans),
_reason(reason),
_err(err)
{
}
~CloseClourse()
{
_trans->tcpClose(false, _reason, _err);
}
protected:
TC_Transceiver* _trans;
TC_Transceiver::CloseReason _reason;
string _err;
};
#define THROW_ERROR(x, r, y) { CloseClourse c(this, r, y); THROW_EXCEPTION_SYSCODE(x, y); }
static const int BUFFER_SIZE = 16 * 1024;
static const int MAX_BUFFER_SIZE = 1024 * 1024 * 10;
uint64_t TC_Transceiver::LONG_NETWORK_TRANS_TIME = 1;
///////////////////////////////////////////////////////////////////////
int TC_Transceiver::createSocket(bool udp, bool isLocal, bool isIpv6)
{
#if TARGET_PLATFORM_WINDOWS
int domain = (isIpv6 ? PF_INET6 : PF_INET);
#else
int domain = isLocal ? PF_LOCAL : (isIpv6 ? PF_INET6 : PF_INET);
#endif
int type = udp ? SOCK_DGRAM : SOCK_STREAM;
TC_Socket s;
s.createSocket(type, domain);
if (!udp)
{
if (!isLocal)
{
try
{
s.setNoCloseWait();
s.setKeepAlive();
s.setTcpNoDelay();
}catch(exception &ex) {
}
}
}
else
{
s.setRecvBufferSize(512 * 1024);
s.setSendBufferSize(512 * 1024);
}
s.setOwner(false);
s.setblock(false);
return s.getfd();
}
bool TC_Transceiver::doConnect(int fd, const struct sockaddr* addr, socklen_t len)
{
bool bConnected = false;
int iRet = ::connect(fd, addr, len);
if (iRet == 0)
{
bConnected = true;
}
else if (!TC_Socket::isInProgress())
{
THROW_ERROR(TC_Transceiver_Exception, CR_Connect,
"connect error, " + _desc);//, TC_Exception::getSystemCode());
}
// LOG_CONSOLE_DEBUG << bConnected << endl;
return bConnected;
}
TC_Transceiver::TC_Transceiver(TC_Epoller* epoller, const TC_Endpoint& ep)
: _epoller(epoller), _ep(ep), _desc(ep.toString()), _fd(-1), _connStatus(eUnconnected), _sendBuffer(this),
_recvBuffer(this), _authState(eAuthInit)
{
_serverAddr = TC_Socket::createSockAddr(_ep);
}
TC_Transceiver::~TC_Transceiver()
{
if (!isValid()) return;
if (_ep.isTcp())
{
tcpClose(true, CR_DECONSTRUCTOR, "");
}
else
{
udpClose();
}
}
void TC_Transceiver::initializeClient(const oncreate_callback& oncreate,
const onclose_callback& onclose,
const onconnect_callback& onconnect,
const onrequest_callback& onrequest,
const onparser_callback& onparser,
const onopenssl_callback& onopenssl,
const oncompletepackage_callback& onfinish,
const oncompletenetwork_callback& onfinishAll)
{
_isServer = false;
_createSocketCallback = oncreate;
_onConnectCallback = onconnect;
_onRequestCallback = onrequest;
_onCloseCallback = onclose;
_onParserCallback = onparser;
_onCompletePackageCallback = onfinish;
_onOpensslCallback = onopenssl;
_onCompleteNetworkCallback = onfinishAll;
}
void TC_Transceiver::initializeServer(const onclose_callback& onclose,
const onrequest_callback& onrequest,
const onparser_callback& onparser,
const onopenssl_callback& onopenssl,
const oncompletepackage_callback& onfinish,
const oncompletenetwork_callback& onfinishAll)
{
_isServer = true;
_connStatus = eConnected;
_onRequestCallback = onrequest;
_onCloseCallback = onclose;
_onParserCallback = onparser;
_onCompletePackageCallback = onfinish;
_onOpensslCallback = onopenssl;
_onCompleteNetworkCallback = onfinishAll;
parseConnectAddress(_ep);
#if TARS_SSL
if (isSSL())
{
_openssl = _onOpensslCallback(this);
if (!_openssl)
{
THROW_ERROR(TC_Transceiver_Exception, CR_SSL, "[TC_Transceiver::initializeServer create '" + _desc + "' ssl client error]");
}
_openssl->init(true);
_openssl->recvBuffer()->setConnection(this);
int ret = _openssl->doHandshake(_sendBuffer);
if (ret != 0)
{
THROW_ERROR(TC_Transceiver_Exception, CR_SSL_HANDSHAKE, "[TC_Transceiver::initializeServer create '" + _desc + "' ssl client error: " + _openssl->getErrMsg() + "]");
}
// send the encrypt data from write buffer
if (!_sendBuffer.empty())
{
doRequest();
}
}
#endif
}
void TC_Transceiver::setClientAuthCallback(const onclientsendauth_callback& onsendauth,
const onclientverifyauth_callback& onverifyauth)
{
_onClientSendAuthCallback = onsendauth;
_onClientVerifyAuthCallback = onverifyauth;
}
void TC_Transceiver::setServerAuthCallback(const onserververifyauth_callback& onverifyauth)
{
_onServerVerifyAuthCallback = onverifyauth;
}
void TC_Transceiver::setBindAddr(const char* host)
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type,
"setBindAddr(" + string(host) + ") only use in client, " + _desc);
}
_bindAddr = TC_Socket::createSockAddr(host);
}
void TC_Transceiver::setBindAddr(const TC_Socket::addr_type& bindAddr)
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "setBindAddr only use in client, " + _desc);
}
_bindAddr = bindAddr;
}
shared_ptr<TC_Epoller::EpollInfo> TC_Transceiver::bindFd(int fd)
{
if (!_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "client should not call bindFd, " + _desc);
}
_connStatus = eConnected;
_fd = fd;
//设置套接口选项
for (size_t i = 0; i < _socketOpts.size(); ++i)
{
setsockopt(_fd, _socketOpts[i].level, _socketOpts[i].optname, (const char*)_socketOpts[i].optval,
_socketOpts[i].optlen);
}
_clientAddr = TC_Socket::createSockAddr(_ep);
getpeername(_fd, _clientAddr.first.get(), &_clientAddr.second);
_epollInfo = _epoller->createEpollInfo(_fd);
return _epollInfo;
}
void TC_Transceiver::setUdpRecvBuffer(size_t nSize)
{
_nRecvBufferSize = nSize;
if(_ep.isUdp() && _fd > 0)
{
TC_Socket s;
s.init(_fd, false, AF_INET);
s.setRecvBufferSize(nSize);
}
}
void TC_Transceiver::setUdpSendBuffer(size_t nSize)
{
if(_ep.isUdp() && _fd > 0)
{
TC_Socket s;
s.init(_fd, false, AF_INET);
s.setSendBufferSize(nSize);
}
}
void TC_Transceiver::checkConnect()
{
//检查连接是否有错误
if (isConnecting())
{
int iVal = 0;
SOCKET_LEN_TYPE iLen = static_cast<SOCKET_LEN_TYPE>(sizeof(int));
int ret = ::getsockopt(_fd, SOL_SOCKET, SO_ERROR, reinterpret_cast<char*>(&iVal), &iLen);
if (ret < 0 || iVal)
{
string err = TC_Exception::parseError(iVal);
THROW_ERROR(TC_Transceiver_Exception, CR_Connect, "connect " + _desc + " error:" + err);
}
_clientAddr = TC_Socket::createSockAddr(_ep);
getpeername(_fd, _clientAddr.first.get(), &_clientAddr.second);
if (_bindAddr.first)
{
//如果服务器终止后,服务器可以第二次快速启动而不用等待一段时间
int iReuseAddr = 1;
setsockopt(_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&iReuseAddr, sizeof(int));
::bind(_fd, _bindAddr.first.get(), _bindAddr.second);
}
setConnected();
}
}
void TC_Transceiver::parseConnectAddress(const TC_Endpoint &ep)
{
#if !TARGET_PLATFORM_WINDOWS
if (isUnixLocal())
{
TC_Socket::parseUnixLocalAddr(ep.getHost().c_str(), *(sockaddr_un*)_serverAddr.first.get());
}
else
#endif
{
if (isConnectIPv6())
{
TC_Socket::parseAddrWithPort(ep.getHost(), ep.getPort(), *(sockaddr_in6*)_serverAddr.first.get());
}
else
{
TC_Socket::parseAddrWithPort(ep.getHost(), ep.getPort(), *(sockaddr_in*)_serverAddr.first.get());
}
}
}
bool TC_Transceiver::isSSL() const
{
return _ep.isSSL();
}
void TC_Transceiver::connect()
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "server should not call connect, " + _desc);
}
if (isValid())
{
return;
}
if (_connStatus == eConnecting || _connStatus == eConnected)
{
return;
}
if (_ep.isUdp())
{
_fd = createSocket(true, isUnixLocal(), isConnectIPv6());
_connStatus = eConnected;
_epollInfo = _epoller->createEpollInfo(_fd);
_proxyInfo = _createSocketCallback(this);
if (_proxyInfo)
{
_desc = _proxyInfo->getEndpoint().toString();
}
//每次连接前都重新解析一下地址, 避免dns变了!
parseConnectAddress(getConnectEndpoint());
}
else
{
_fd = createSocket(false, isUnixLocal(), isConnectIPv6());
_isConnTimeout = false;
_epollInfo = _epoller->createEpollInfo(_fd);
_connTimerId = _epoller->postDelayed(_connTimeout, std::bind(&TC_Transceiver::checkConnectTimeout, this));
_proxyInfo = _createSocketCallback(this);
if (_proxyInfo)
{
_desc = _proxyInfo->getEndpoint().toString();
}
//每次连接前都重新解析一下地址, 避免dns变了!
parseConnectAddress(getConnectEndpoint());
bool bConnected = doConnect(_fd, _serverAddr.first.get(), _serverAddr.second);
if (bConnected)
{
setConnected();
}
else
{
_connStatus = TC_Transceiver::eConnecting;
}
}
//设置套接口选项
for (size_t i = 0; i < _socketOpts.size(); ++i)
{
setsockopt(_fd, _socketOpts[i].level, _socketOpts[i].optname, (const char*)_socketOpts[i].optval,
_socketOpts[i].optlen);
}
}
void TC_Transceiver::checkConnectTimeout()
{
if (_connStatus != eConnected)
{
_isConnTimeout = true;
THROW_ERROR(TC_Transceiver_Exception, CR_ConnectTimeout, "connect timeout, " + _desc);
}
}
void TC_Transceiver::setConnected()
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "server should not call setConnected, " + _desc);
}
_connStatus = eConnected;
if (_proxyInfo)
{
connectProxy();
}
else
{
onSetConnected();
}
}
void TC_Transceiver::onSetConnected()
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "server should not call onSetConnected, " + _desc);
}
onConnect();
_onConnectCallback(this);
if (!isSSL())
{
doAuthReq();
}
}
void TC_Transceiver::onConnect()
{
if (_isServer)
{
THROW_ERROR(TC_Transceiver_Exception, CR_Type, "server should not call onConnect, " + _desc);
}
_epoller->erase(_connTimerId);
_connTimerId = 0;
#if TARS_SSL
if (isSSL())
{
_openssl = _onOpensslCallback(this);
if (!_openssl)
{
close();
return;
}
_openssl->init(false);
_openssl->setReadBufferSize(1024 * 8);
_openssl->setWriteBufferSize(1024 * 8);
_openssl->recvBuffer()->setConnection(this);
int ret = _openssl->doHandshake(_sendBuffer);
if (ret != 0)
{
THROW_ERROR(TC_Transceiver_Exception, CR_SSL, "ssl hande shake failed, " + _desc + ", error:" + _openssl->getErrMsg());
}
// send the encrypt data from write buffer
if (!_sendBuffer.empty())
{
doRequest();
}
return;
}
#endif
}
void TC_Transceiver::doAuthReq()
{
if (_ep.getAuthType() == TC_Endpoint::AUTH_TYPENONE)
{
_authState = eAuthSucc;
_onRequestCallback(this);
}
else
{
//如果是客户端, 则主动发起鉴权请求
shared_ptr<TC_NetWorkBuffer::Buffer> buff = _onClientSendAuthCallback(this);
#if TARS_SSL
if(this->isSSL())
{
int ret = _openssl->write(buff->buffer(), (uint32_t) buff->length(), _sendBuffer);
if(ret != 0)
{
THROW_ERROR(TC_Transceiver_Exception, CR_SSL, "ssl write failed, " + _desc + ", error:" + _openssl->getErrMsg());
return ;
}
}
else
{
_sendBuffer.addBuffer(buff);
}
#else
_sendBuffer.addBuffer(buff);
#endif
doRequest();
}
}
void TC_Transceiver::connectProxy()
{
assert(_proxyInfo);
vector<char> buff;
bool succ = _proxyInfo->sendProxyPacket(buff, _ep);
if (!succ)
{
THROW_ERROR(TC_Transceiver_Exception, CR_PROXY_SEND,
"connect to proxy, " + _desc + ", error:" + _proxyInfo->getErrMsg());
}
_sendBuffer.addBuffer(buff);
doRequest();
}
int TC_Transceiver::doCheckProxy(const char* buff, size_t length)
{
if (!_proxyInfo || _proxyInfo->isSuccess())
return 0;
bool succ = _proxyInfo->recvProxyPacket(buff, length);
if (!succ)
{
THROW_ERROR(TC_Transceiver_Exception, CR_PROXY_RECV,
"connect to proxy, " + _desc + ", error:" + _proxyInfo->getErrMsg());
}
if (!_proxyInfo->isSuccess())
{
connectProxy();
}
else
{
onSetConnected();
}
return 1;
}
void TC_Transceiver::udpClose()
{
if (_ep.isUdp())
{
_epoller->releaseEpollInfo(_epollInfo);
_epollInfo.reset();
TC_Port::closeSocket(_fd);
_fd = -1;
_connStatus = eUnconnected;
_sendBuffer.clearBuffers();
_recvBuffer.clearBuffers();
}
}
void TC_Transceiver::close()
{
// LOG_CONSOLE_DEBUG << this << endl;
if (!isValid()) return;
if (_ep.isTcp())
{
tcpClose(false, CR_ACTIVE, "active call");
}
else
{
udpClose();
}
}
void TC_Transceiver::tcpClose(bool deconstructor, CloseReason reason, const string &err)
{
if(_ep.isTcp() && isValid())
{
#if TARS_SSL
if (_openssl)
{
_openssl->release();
_openssl.reset();
}
#endif
//LOG_CONSOLE_DEBUG << this << ", " << _fd << ", " << reason << ", " << err << ", " << deconstructor << endl;
if (_connTimerId != 0)
{
_epoller->erase(_connTimerId);
_connTimerId = 0;
}
_epoller->releaseEpollInfo(_epollInfo);
_epollInfo.reset();
TC_Port::closeSocket(_fd);
_fd = -1;
_connStatus = eUnconnected;
_sendBuffer.clearBuffers();
_recvBuffer.clearBuffers();
_authState = eAuthInit;
if (!deconstructor)
{
//注意必须放在最后, 主要避免_onCloseCallback里面析构了链接, 从而导致又进入tcpClose
//放在最后就不会有问题了, 因为不会再进入这个函数
_onCloseCallback(this, reason, err);
}
}
}
void TC_Transceiver::doRequest()
{
if (!isValid()) return;
checkConnect();
//buf不为空,先发送buffer的内容
while (!_sendBuffer.empty())
{
auto data = _sendBuffer.getBufferPointer();
assert(data.first != NULL && data.second != 0);
// LOG_CONSOLE_DEBUG << "doRequest buff :" << string(data.first, (uint32_t)data.second) << endl;
int iRet = this->send(data.first, (uint32_t)data.second, 0);
if (iRet <= 0)
{
return;
}
_sendBuffer.moveHeader(iRet);
}
if (_sendBuffer.empty())
{
_onRequestCallback(this);
}
}
TC_Transceiver::ReturnStatus
TC_Transceiver::sendRequest(const shared_ptr<TC_NetWorkBuffer::Buffer>& buff, const TC_Socket::addr_type& addr)
{
// LOG_CONSOLE_DEBUG << buff->length() << endl;
//空数据 直接返回成功
if (buff->empty())
{
return eRetOk;
}
// assert(_sendBuffer.empty());
//buf不为空, 表示之前的数据还没发送完, 直接返回失败, 等buffer可写了,epoll会通知写事件
if (!_sendBuffer.empty())
{
//不应该运行到这里
return eRetNotSend;
}
if (eConnected != _connStatus)
{
return eRetNotSend;
}
if (_proxyInfo && !_proxyInfo->isSuccess())
{
return eRetNotSend;
}
if (_ep.isTcp() && _ep.getAuthType() == TC_Endpoint::AUTH_TYPELOCAL && _authState != eAuthSucc)
{
#if TARS_SSL
if (isSSL() && !_openssl)
{
return eRetNotSend;
}
#endif
return eRetNotSend; // 需要鉴权但还没通过，不能发送非认证消息
}
#if TARS_SSL
// 握手数据已加密,直接发送，会话数据需加密
if (isSSL())
{
if(!_openssl->isHandshaked()) {
return eRetNotSend;
}
int ret = _openssl->write(buff->buffer(), (uint32_t) buff->length(), _sendBuffer);
if(ret != 0)
{
close();
return eRetError;
}
buff->clear();
}
else
{
_sendBuffer.addBuffer(buff);
}
#else
_sendBuffer.addBuffer(buff);
#endif
// LOG_CONSOLE_DEBUG << _sendBuffer.getBufferLength() << endl;
_lastAddr = addr;
do
{
auto data = _sendBuffer.getBufferPointer();
int iRet = this->send(data.first, (uint32_t)data.second, 0);
if (iRet < 0)
{
if (!isValid())
{
_sendBuffer.clearBuffers();
return eRetError;
}
else
{
return eRetFull;
}
}
_sendBuffer.moveHeader(iRet);
// assert(iRet != 0);
} while (!_sendBuffer.empty());
return eRetOk;
}
void TC_Transceiver::doAuthCheck(TC_NetWorkBuffer* buff)
{
if (!buff->empty() && _ep.isTcp() && _ep.getAuthType() == TC_Endpoint::AUTH_TYPELOCAL &&
_authState != eAuthSucc)
{
TC_NetWorkBuffer::PACKET_TYPE type;
if (_isServer)
{
//验证鉴权
auto ret = _onServerVerifyAuthCallback(*buff, this);
type = ret.first;
if (type == TC_NetWorkBuffer::PACKET_FULL)
{
_authState = eAuthSucc;
//服务器端, 鉴权通过, 可以响应包
sendRequest(ret.second, _serverAddr);
}
}
else
{
type = _onClientVerifyAuthCallback(*buff, this);
if (type == TC_NetWorkBuffer::PACKET_FULL)
{
_authState = eAuthSucc;
//客户端, 鉴权通过可以发送业务包了
_onRequestCallback(this);
}
}
if (type == TC_NetWorkBuffer::PACKET_ERR)
{
THROW_ERROR(TC_Transceiver_Exception, CR_PROTOCOL, "[TC_Transceiver::doProtocolAnalysis, auth error]");
}
}
}
int TC_Transceiver::doProtocolAnalysis(TC_NetWorkBuffer* buff)
{
doAuthCheck(buff);
TC_NetWorkBuffer::PACKET_TYPE ret;
int packetCount = 0;
int ioriginal = 0;
int isurplus = 0;
try
{
do
{
ioriginal = buff->getBufferLength();
ret = _onParserCallback(*buff, this);
isurplus = buff->getBufferLength();
if (ret == TC_NetWorkBuffer::PACKET_FULL || ret == TC_NetWorkBuffer::PACKET_FULL_CLOSE)
{
++packetCount;
}
if (_onCompletePackageCallback)
{
//收到一个完整的包
_onCompletePackageCallback(this);
}
if (ret == TC_NetWorkBuffer::PACKET_FULL_CLOSE)
{
//full close模式下, 需要关闭连接
tcpClose(false, CR_PROTOCOL, "protocol full close");
}
// 当收到完整包时，解析完包后，buffer没movehead，则报错
if (ret == TC_NetWorkBuffer::PACKET_FULL && ioriginal == isurplus)
{
ret = TC_NetWorkBuffer::PACKET_FULL_CLOSE;
string err = "parser buffer movehead error, " + _desc;
tcpClose(false, CR_PROTOCOL, err); // 这个地方会将连接关闭，为了方便后期问题定位
throw TC_Transceiver_Exception(err);
}
if(ret == TC_NetWorkBuffer::PACKET_ERR && _ep.isUdp())
{
//udp包如果存在解析错误, 则将所有包都清掉, 避免一个包的污染
_recvBuffer.clearBuffers();
}
} while (ret == TC_NetWorkBuffer::PACKET_FULL);
if (_onCompleteNetworkCallback)
{
try
{ _onCompleteNetworkCallback(this); }
catch (...)
{}
}
}
catch (exception& ex)
{
if (_onCompleteNetworkCallback)
{
try
{
_onCompleteNetworkCallback(this);
}
catch (...)
{
}
}
THROW_ERROR(TC_Transceiver_Exception, CR_PROTOCOL, "parser decode error:" + string(ex.what()) + "]");
}
catch (...)
{
if (_onCompleteNetworkCallback)
{
try
{
_onCompleteNetworkCallback(this);
}
catch (...)
{
}
}
THROW_ERROR(TC_Transceiver_Exception, CR_PROTOCOL, "parser decode error");
}
if (ret == TC_NetWorkBuffer::PACKET_ERR)
{
string err = "parser decode error, " + _desc;
tcpClose(false, CR_PROTOCOL, err);
throw TC_Transceiver_Exception(err);
}
return packetCount;
}
//////////////////////////////////////////////////////////
TC_TCPTransceiver::TC_TCPTransceiver(TC_Epoller* epoller, const TC_Endpoint& ep)
: TC_Transceiver(epoller, ep)
{
assert(epoller);
}
//不同的内存分配机制
#if 0
bool TC_TCPTransceiver::doResponse()
{
checkConnect();
int iRet = 0;
int64_t now = TNOWMS;
// int packetCount = 0;
do
{
char buff[BUFFER_SIZE];
if ((iRet = this->recv((void*)buff, BUFFER_SIZE, 0)) > 0)
{
int check = doCheckProxy(buff, iRet);
if(check != 0)
{
_recvBuffer.clearBuffers();
return true;
}
_recvBuffer.addBuffer(buff, iRet);
//解析协议
doProtocolAnalysis(&_recvBuffer);
//收包太多了, 中断一下, 释放线程给send等
if (TNOWMS - now >= LONG_NETWORK_TRANS_TIME && isValid())
{
_epollInfo->mod(EPOLLIN | EPOLLOUT);
break;
}
//接收的数据小于buffer大小, 内核会再次通知你
if(iRet < BUFFER_SIZE)
{
break;
}
}
}
while (iRet>0);
if(iRet == 0)
{
tcpClose(false, CR_PEER_CLOSE, "peer close connection");
}
return iRet != 0;
}
#else
bool TC_TCPTransceiver::doResponse()
{
checkConnect();
int iRet = 0;
int64_t now = TNOWMS;
// int packetCount = 0;
do
{
// auto data = _recvBuffer.getOrCreateBuffer(BUFFER_SIZE / 8, BUFFER_SIZE);
size_t expansion = std::max(std::min(_recvBuffer.getBufferLength(), (size_t)MAX_BUFFER_SIZE), (size_t)BUFFER_SIZE);
auto data = _recvBuffer.getOrCreateBuffer(BUFFER_SIZE / 8, expansion);
uint32_t left = (uint32_t)data->left();
if ((iRet = this->recv((void*)data->free(), left, 0)) > 0)
{
int check = doCheckProxy(data->free(), iRet);
if (check != 0)
{
_recvBuffer.clearBuffers();
return true;
}