source/net/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/handle_private.h>
   7 #include <msp/io/poll.h>
   8 #include <msp/strings/format.h>
   9 #include "sockaddr_private.h"
  10 #include "socket_private.h"
  11 #include "streamsocket.h"
  12
  13 namespace Msp {
  14 namespace Net {
  15
  16 StreamSocket::StreamSocket(const Private &p, const SockAddr &paddr):
  17         ClientSocket(p, paddr)
  18 {
  19 #ifdef WIN32
  20         WSAEventSelect(priv->handle, *priv->event, FD_READ|FD_CLOSE);
  21 #endif
  22         set_events(IO::P_INPUT);
  23 }
  24
  25 StreamSocket::StreamSocket(Family af, int proto):
  26         ClientSocket(af, SOCK_STREAM, proto)
  27 { }
  28
  29 bool StreamSocket::connect(const SockAddr &addr)
  30 {
  31         if(connected)
  32                 throw bad_socket_state("already connected");
  33
  34         SockAddr::SysAddr sa = addr.to_sys();
  35
  36         int err = ::connect(priv->handle, reinterpret_cast<sockaddr *>(&sa.addr), sa.size);
  37 #ifdef WIN32
  38         if(err==SOCKET_ERROR)
  39         {
  40                 int err_code = WSAGetLastError();
  41                 if(err_code==WSAEWOULDBLOCK)
  42                 {
  43                         connecting = true;
  44                         WSAEventSelect(priv->handle, *priv->event, FD_CONNECT);
  45                         set_events(IO::P_OUTPUT);
  46                 }
  47                 else
  48                         throw system_error("connect", err_code);
  49         }
  50 #else
  51         if(err==-1)
  52         {
  53                 if(errno==EINPROGRESS)
  54                 {
  55                         connecting = true;
  56                         set_events(IO::P_OUTPUT);
  57                 }
  58                 else
  59                         throw system_error("connect");
  60         }
  61 #endif
  62
  63         delete peer_addr;
  64         peer_addr = addr.copy();
  65
  66         delete local_addr;
  67         SockAddr::SysAddr lsa;
  68         getsockname(priv->handle, reinterpret_cast<sockaddr *>(&lsa.addr), &lsa.size);
  69         local_addr = SockAddr::new_from_sys(lsa);
  70
  71         if(err==0)
  72         {
  73                 connected = true;
  74                 set_events(IO::P_INPUT);
  75                 signal_connect_finished.emit(0);
  76         }
  77
  78         return connected;
  79 }
  80
  81 bool StreamSocket::poll_connect(const Time::TimeDelta &timeout)
  82 {
  83         if(!connecting)
  84                 return false;
  85
  86         IO::PollEvent res = poll(*this, IO::P_OUTPUT, timeout);
  87         if(res&IO::P_OUTPUT)
  88         {
  89                 connecting = false;
  90
  91                 int err;
  92                 socklen_t len = sizeof(int);
  93                 get_option(SOL_SOCKET, SO_ERROR, &err, &len);
  94
  95                 if(err!=0)
  96                 {
  97                         set_events(IO::P_NONE);
  98 #ifdef WIN32
  99                         throw system_error("connect", WSAGetLastError());
 100 #else
 101                         throw system_error("connect");
 102 #endif
 103                 }
 104
 105 #ifdef WIN32
 106                 WSAEventSelect(priv->handle, *priv->event, FD_READ|FD_CLOSE);
 107 #endif
 108                 set_events(IO::P_INPUT);
 109
 110                 connected = true;
 111         }
 112
 113         return connected;
 114 }
 115
 116 void StreamSocket::on_event(IO::PollEvent ev)
 117 {
 118         if((ev&(IO::P_OUTPUT|IO::P_ERROR)) && connecting)
 119         {
 120                 int err;
 121                 socklen_t len = sizeof(err);
 122                 get_option(SOL_SOCKET, SO_ERROR, &err, &len);
 123
 124                 connecting = false;
 125                 connected = (err==0);
 126                 if(err)
 127                 {
 128                         system_error exc("connect", err);
 129                         signal_connect_finished.emit(&exc);
 130                 }
 131                 else
 132                         signal_connect_finished.emit(0);
 133
 134                 if(err!=0)
 135                 {
 136                         delete peer_addr;
 137                         peer_addr = 0;
 138                 }
 139
 140 #ifdef WIN32
 141                 WSAEventSelect(priv->handle, *priv->event, FD_READ|FD_CLOSE);
 142 #endif
 143                 set_events((err==0) ? IO::P_INPUT : IO::P_NONE);
 144         }
 145 }
 146
 147 } // namespace Net
 148 } // namespace Msp