source/streamsocket.cpp

   1 #ifndef WIN32
   2 #include <sys/socket.h>
   3 #endif
   4 #include <cerrno>
   5 #include <msp/core/systemerror.h>
   6 #include <msp/io/poll.h>
   7 #include <msp/strings/format.h>
   8 #include "streamsocket.h"
   9
  10 namespace Msp {
  11 namespace Net {
  12
  13 StreamSocket::StreamSocket(SocketHandle h, const SockAddr &paddr):
  14         Socket(h, paddr),
  15         connecting(false)
  16 {
  17 #ifdef WIN32
  18         WSAEventSelect(handle, event, FD_READ|FD_CLOSE);
  19 #endif
  20         set_events(IO::P_INPUT);
  21 }
  22
  23 StreamSocket::StreamSocket(Family af, int proto):
  24         Socket(af, SOCK_STREAM, proto),
  25         connecting(false)
  26 { }
  27
  28 int StreamSocket::poll_connect(const Time::TimeDelta &timeout)
  29 {
  30         if(!connecting)
  31                 throw bad_socket_state("not connecting");
  32
  33         int res = poll(*this, IO::P_OUTPUT, timeout);
  34         if(res==-1)
  35 #ifdef WIN32
  36                 throw system_error("poll", WSAGetLastError());
  37 #else
  38                 throw system_error("poll");
  39 #endif
  40         else if(res>0)
  41         {
  42                 connecting = false;
  43
  44                 int err;
  45                 socklen_t len = sizeof(int);
  46                 get_option(SOL_SOCKET, SO_ERROR, &err, &len);
  47
  48                 if(err!=0)
  49                 {
  50                         set_events(IO::P_NONE);
  51 #ifdef WIN32
  52                         throw system_error("connect", WSAGetLastError());
  53 #else
  54                         throw system_error("connect");
  55 #endif
  56                 }
  57
  58 #ifdef WIN32
  59                 WSAEventSelect(handle, event, FD_READ|FD_CLOSE);
  60 #endif
  61                 set_events(IO::P_INPUT);
  62
  63                 connected = true;
  64
  65                 return 0;
  66         }
  67
  68         return 1;
  69 }
  70
  71 int StreamSocket::connect(const SockAddr &addr)
  72 {
  73         if(connected)
  74                 throw bad_socket_state("already connected");
  75
  76         sockaddr_storage sa;
  77         socklen_t size = addr.fill_sockaddr(sa);
  78
  79 #ifdef WIN32
  80         int err = WSAConnect(handle, reinterpret_cast<sockaddr *>(&sa), size, 0, 0, 0, 0);
  81         if(err==SOCKET_ERROR)
  82         {
  83                 int err_code = WSAGetLastError();
  84                 if(err_code==WSAEWOULDBLOCK)
  85                 {
  86                         connecting = true;
  87                         WSAEventSelect(handle, event, FD_CONNECT);
  88                         set_events(IO::P_OUTPUT);
  89                 }
  90                 else
  91                         throw system_error("connect", err_code);
  92         }
  93 #else
  94         int err = ::connect(handle, reinterpret_cast<sockaddr *>(&sa), size);
  95         if(err==-1)
  96         {
  97                 if(errno==EINPROGRESS)
  98                 {
  99                         connecting = true;
 100                         set_events(IO::P_OUTPUT);
 101                 }
 102                 else
 103                         throw system_error("connect");
 104         }
 105 #endif
 106
 107         delete peer_addr;
 108         peer_addr = addr.copy();
 109
 110         delete local_addr;
 111         size = sizeof(sockaddr_storage);
 112         getsockname(handle, reinterpret_cast<sockaddr *>(&sa), &size);
 113         local_addr = SockAddr::create(sa);
 114
 115         if(err==0)
 116         {
 117                 connected = true;
 118                 set_events(IO::P_INPUT);
 119                 signal_connect_finished.emit(0);
 120         }
 121
 122         return (err==0)?0:1;
 123 }
 124
 125 void StreamSocket::on_event(IO::PollEvent ev)
 126 {
 127         if((ev&(IO::P_OUTPUT|IO::P_ERROR)) && connecting)
 128         {
 129                 int err;
 130                 socklen_t len = sizeof(err);
 131                 get_option(SOL_SOCKET, SO_ERROR, &err, &len);
 132
 133                 connecting = false;
 134                 connected = (err==0);
 135                 signal_connect_finished.emit(err);
 136
 137                 if(err!=0)
 138                 {
 139                         delete peer_addr;
 140                         peer_addr = 0;
 141                 }
 142
 143 #ifdef WIN32
 144                 WSAEventSelect(handle, event, FD_READ|FD_CLOSE);
 145 #endif
 146                 set_events((err==0) ? IO::P_INPUT : IO::P_NONE);
 147         }
 148 }
 149
 150 } // namespace Net
 151 } // namespace Msp