// static
LLSocket::ptr_t LLSocket::create(apr_status_t& status, LLSocket::ptr_t& listen_socket)
{
if (!listen_socket->getSocket())
{
status = APR_ENOSOCKET;
return LLSocket::ptr_t();
}
LLSocket::ptr_t rv(new LLSocket);
LL_DEBUGS() << "accepting socket" << LL_ENDL;
status = apr_socket_accept(&rv->mSocket, listen_socket->getSocket(), rv->mPool());
if (status != APR_SUCCESS)
{
rv->mSocket = NULL;
rv.reset();
return rv;
}
rv->mPort = PORT_EPHEMERAL;
rv->setNonBlocking();
return rv;
}
// static
LLSocket::ptr_t LLSocket::create(apr_status_t& status, LLSocket::ptr_t& listen_socket)
{
LLMemType m1(LLMemType::MTYPE_IO_TCP);
if (!listen_socket->getSocket())
{
status = APR_ENOSOCKET;
return LLSocket::ptr_t();
}
LLSocket::ptr_t rv(new LLSocket);
lldebugs << "accepting socket" << llendl;
status = apr_socket_accept(&rv->mSocket, listen_socket->getSocket(), rv->mPool());
if (status != APR_SUCCESS)
{
rv->mSocket = NULL;
rv.reset();
return rv;
}
rv->mPort = PORT_EPHEMERAL;
rv->setNonBlocking();
return rv;
}
/**
* @brief Send one TCP packet and receive one in return.
*
* This operation is done synchronously with a 1000ms timeout. Therefore, it should not be used when a blocking
* operation would impact the operation of the viewer.
*
* @param handle_ptr Pointer to a connected LLSocket of type STREAM_TCP.
* @param dataout Data to send.
* @param outlen Length of dataout.
* @param datain Buffer for received data. Undefined if return value is not APR_SUCCESS.
* @param maxinlen Maximum possible length of received data. Short reads are allowed.
* @return Indicates APR status code of exchange. APR_SUCCESS if exchange was successful, -1 if invalid data length was received.
*/
static apr_status_t tcp_blocking_handshake(LLSocket::ptr_t handle, char * dataout, apr_size_t outlen, char * datain, apr_size_t maxinlen)
{
apr_socket_t* apr_socket = handle->getSocket();
apr_status_t rv = APR_SUCCESS;
apr_size_t expected_len = outlen;
handle->setBlocking(1000);
rv = apr_socket_send(apr_socket, dataout, &outlen);
if (APR_SUCCESS != rv)
{
LL_WARNS("Proxy") << "Error sending data to proxy control channel, status: " << rv << LL_ENDL;
ll_apr_warn_status(rv);
}
else if (expected_len != outlen)
{
LL_WARNS("Proxy") << "Incorrect data length sent. Expected: " << expected_len <<
" Sent: " << outlen << LL_ENDL;
rv = -1;
}
if (APR_SUCCESS == rv)
{
expected_len = maxinlen;
rv = apr_socket_recv(apr_socket, datain, &maxinlen);
if (rv != APR_SUCCESS)
{
LL_WARNS("Proxy") << "Error receiving data from proxy control channel, status: " << rv << LL_ENDL;
ll_apr_warn_status(rv);
}
else if (expected_len < maxinlen)
{
LL_WARNS("Proxy") << "Incorrect data length received. Expected: " << expected_len <<
" Received: " << maxinlen << LL_ENDL;
rv = -1;
}
}
handle->setNonBlocking();
return rv;
}