source/streamsocket.cpp

   1 #ifndef WIN32
   2 #include <sys/socket.h>
   3 #endif
   4 #include <cerrno>
   5 #include <msp/io/poll.h>
   6 #include <msp/strings/formatter.h>
   7 #include "streamsocket.h"
   8
   9 namespace Msp {
  10 namespace Net {
  11
  12 StreamSocket::StreamSocket(SocketHandle h, const SockAddr &paddr):
  13         Socket(h, paddr),
  14         connecting(false)
  15 {
  16 #ifdef WIN32
  17         WSAEventSelect(handle, event, FD_READ|FD_CLOSE);
  18 #endif
  19         set_events(IO::P_INPUT);
  20 }
  21
  22 StreamSocket::StreamSocket(Family af, int proto):
  23         Socket(af, SOCK_STREAM, proto),
  24         connecting(false)
  25 { }
  26
  27 int StreamSocket::poll_connect(const Time::TimeDelta &timeout)
  28 {
  29         check_state(false);
  30         if(!connecting)
  31                 throw InvalidState("No connection attempt going on");
  32
  33         int res = poll(*this, IO::P_OUTPUT, timeout);
  34         if(res==-1)
  35 #ifdef WIN32
  36                 throw Exception(format("Connection polling failed: %d", WSAGetLastError()));
  37 #else
  38                 throw SystemError("Connection polling failed", errno);
  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 Exception(format("Connection failed: %d", err));
  53 #else
  54                         throw SystemError("Connection failed", err);
  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         check_state(false);
  74
  75         if(connected)
  76                 throw InvalidState("Socket is already connected");
  77
  78         sockaddr_storage sa;
  79         socklen_t size = addr.fill_sockaddr(sa);
  80
  81 #ifdef WIN32
  82         int err = WSAConnect(handle, reinterpret_cast<sockaddr *>(&sa), size, 0, 0, 0, 0);
  83         if(err==SOCKET_ERROR)
  84         {
  85                 int err_code = WSAGetLastError();
  86                 if(err_code==WSAEWOULDBLOCK)
  87                 {
  88                         connecting = true;
  89                         WSAEventSelect(handle, event, FD_CONNECT);
  90                         set_events(IO::P_OUTPUT);
  91                 }
  92                 else
  93                         throw Exception(format("Unable to connect: %d", err_code));
  94         }
  95 #else
  96         int err = ::connect(handle, reinterpret_cast<sockaddr *>(&sa), size);
  97         if(err==-1)
  98         {
  99                 if(errno==EINPROGRESS)
 100                 {
 101                         connecting = true;
 102                         set_events(IO::P_OUTPUT);
 103                 }
 104                 else
 105                         throw SystemError("Unable to connect", errno);
 106         }
 107 #endif
 108
 109         delete peer_addr;
 110         peer_addr = addr.copy();
 111
 112         delete local_addr;
 113         size = sizeof(sockaddr_storage);
 114         getsockname(handle, reinterpret_cast<sockaddr *>(&sa), &size);
 115         local_addr = SockAddr::create(sa);
 116
 117         if(err==0)
 118         {
 119                 connected = true;
 120                 set_events(IO::P_INPUT);
 121                 signal_connect_finished.emit(0);
 122         }
 123
 124         return (err==0)?0:1;
 125 }
 126
 127 void StreamSocket::on_event(IO::PollEvent ev)
 128 {
 129         if((ev&(IO::P_OUTPUT|IO::P_ERROR)) && connecting)
 130         {
 131                 int err;
 132                 socklen_t len = sizeof(err);
 133                 get_option(SOL_SOCKET, SO_ERROR, &err, &len);
 134
 135                 connecting = false;
 136                 connected = (err==0);
 137                 signal_connect_finished.emit(err);
 138
 139                 if(err!=0)
 140                 {
 141                         delete peer_addr;
 142                         peer_addr = 0;
 143                 }
 144
 145 #ifdef WIN32
 146                 WSAEventSelect(handle, event, FD_READ|FD_CLOSE);
 147 #endif
 148                 set_events((err==0) ? IO::P_INPUT : IO::P_NONE);
 149         }
 150 }
 151
 152 } // namespace Net
 153 } // namespace Msp