bool CTransferSocket::SetupPassiveTransfer(wxString host, int port)
{
ResetSocket();
m_pSocket = new CSocket(this);
if (m_pControlSocket->m_pProxyBackend)
{
m_pProxyBackend = new CProxySocket(this, m_pSocket, m_pControlSocket);
int res = m_pProxyBackend->Handshake(m_pControlSocket->m_pProxyBackend->GetProxyType(),
host, port,
m_pControlSocket->m_pProxyBackend->GetUser(), m_pControlSocket->m_pProxyBackend->GetPass());
if (res != EINPROGRESS)
{
ResetSocket();
return false;
}
int error;
host = m_pControlSocket->m_pSocket->GetPeerIP();
port = m_pControlSocket->m_pSocket->GetRemotePort(error);
if( host.empty() || port < 1 ) {
m_pControlSocket->LogMessage(MessageType::Debug_Warning, _T("Could not get peer address of control connection."));
ResetSocket();
return false;
}
}
SetSocketBufferSizes(m_pSocket);
int res = m_pSocket->Connect(host, port);
if (res && res != EINPROGRESS)
{
ResetSocket();
return false;
}
return true;
}
bool CTransferSocket::SetupPassiveTransfer(std::wstring const& host, int port)
{
std::string ip;
ResetSocket();
m_pSocket = new CSocket(engine_.GetThreadPool(), this);
if (controlSocket_.m_pProxyBackend) {
m_pProxyBackend = new CProxySocket(this, m_pSocket, &controlSocket_);
int res = m_pProxyBackend->Handshake(controlSocket_.m_pProxyBackend->GetProxyType(),
host, port,
controlSocket_.m_pProxyBackend->GetUser(), controlSocket_.m_pProxyBackend->GetPass());
if (res != EINPROGRESS) {
ResetSocket();
return false;
}
int error;
ip = controlSocket_.m_pSocket->GetPeerIP();
port = controlSocket_.m_pSocket->GetRemotePort(error);
if (ip.empty() || port < 1) {
controlSocket_.LogMessage(MessageType::Debug_Warning, _T("Could not get peer address of control connection."));
ResetSocket();
return false;
}
}
else {
ip = fz::to_utf8(host);
}
SetSocketBufferSizes(m_pSocket);
// Try to bind the source IP of the data connection to the same IP as the control connection.
// We can do so either if
// 1) the destination IP of the data connection matches peer IP of the control connection or
// 2) we are using a proxy.
//
// In case destination IPs of control and data connection are different, do not bind to the
// same source.
std::string bindAddress;
if (m_pProxyBackend) {
bindAddress = controlSocket_.m_pSocket->GetLocalIP();
controlSocket_.LogMessage(MessageType::Debug_Info, _T("Binding data connection source IP to control connection source IP %s"), bindAddress);
}
else {
if (controlSocket_.m_pSocket->GetPeerIP(true) == ip || controlSocket_.m_pSocket->GetPeerIP(false) == ip) {
bindAddress = controlSocket_.m_pSocket->GetLocalIP();
controlSocket_.LogMessage(MessageType::Debug_Info, _T("Binding data connection source IP to control connection source IP %s"), bindAddress);
}
else {
controlSocket_.LogMessage(MessageType::Debug_Warning, _T("Destination IP of data connection does not match peer IP of control connection. Not binding source address of data connection."));
}
}
int res = m_pSocket->Connect(fz::to_native(ip), port, CSocket::unspec, bindAddress);
if (res && res != EINPROGRESS) {
ResetSocket();
return false;
}
return true;
}
