source/net/socket.cpp

   1 #ifndef WIN32
   2 #include <cerrno>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5 #include <sys/socket.h>
   6 #endif
   7 #include <iostream>
   8 #include <msp/core/systemerror.h>
   9 #include <msp/io/handle_private.h>
  10 #include <msp/strings/format.h>
  11 #include <msp/time/rawtime_private.h>
  12 #include <msp/time/units.h>
  13 #include "sockaddr_private.h"
  14 #include "socket.h"
  15 #include "socket_private.h"
  16
  17 namespace {
  18
  19 #ifdef WIN32
  20 class WinSockHelper
  21 {
  22 public:
  23         WinSockHelper()
  24         {
  25                 WSADATA wsa_data;
  26                 int err = WSAStartup(0x0002, &wsa_data);
  27                 if(err)
  28                         std::cerr<<"Failed to initialize WinSock: "<<err<<'\n';
  29         }
  30
  31         ~WinSockHelper()
  32         {
  33                 WSACleanup();
  34         }
  35 };
  36
  37 WinSockHelper wsh;
  38 #endif
  39
  40 }
  41
  42 namespace Msp {
  43 namespace Net {
  44
  45 Socket::Socket(const Private &p):
  46         priv(new Private),
  47         local_addr(0)
  48 {
  49         priv->handle = p.handle;
  50
  51         SockAddr::SysAddr sa;
  52         getsockname(priv->handle, reinterpret_cast<sockaddr *>(&sa.addr), &sa.size);
  53         local_addr = SockAddr::new_from_sys(sa);
  54
  55 #ifdef WIN32
  56         *priv->event = CreateEvent(0, false, false, 0);
  57 #else
  58         *priv->event = priv->handle;
  59 #endif
  60 }
  61
  62 Socket::Socket(Family af, int type, int proto):
  63         priv(new Private),
  64         local_addr(0)
  65 {
  66         priv->handle = socket(family_to_sys(af), type, proto);
  67
  68 #ifdef WIN32
  69         *priv->event = CreateEvent(0, false, false, 0);
  70 #else
  71         *priv->event = priv->handle;
  72 #endif
  73 }
  74
  75 Socket::~Socket()
  76 {
  77 #ifdef WIN32
  78         closesocket(priv->handle);
  79         CloseHandle(*priv->event);
  80 #else
  81         ::close(priv->handle);
  82 #endif
  83
  84         delete local_addr;
  85         delete priv;
  86 }
  87
  88 void Socket::set_block(bool b)
  89 {
  90         mode = (mode&~IO::M_NONBLOCK);
  91         if(b)
  92                 mode = (mode|IO::M_NONBLOCK);
  93
  94 #ifdef WIN32
  95         u_long flag = !b;
  96         ioctlsocket(priv->handle, FIONBIO, &flag);
  97 #else
  98         int flags = fcntl(priv->handle, F_GETFL);
  99         fcntl(priv->handle, F_SETFL, (flags&O_NONBLOCK)|(b?0:O_NONBLOCK));
 100 #endif
 101 }
 102
 103 const IO::Handle &Socket::get_event_handle()
 104 {
 105         return priv->event;
 106 }
 107
 108
 109 void Socket::bind(const SockAddr &addr)
 110 {
 111         SockAddr::SysAddr sa = addr.to_sys();
 112
 113         int err = ::bind(priv->handle, reinterpret_cast<sockaddr *>(&sa.addr), sa.size);
 114         if(err==-1)
 115                 throw system_error("bind");
 116
 117         delete local_addr;
 118         local_addr = addr.copy();
 119 }
 120
 121 const SockAddr &Socket::get_local_address() const
 122 {
 123         if(local_addr==0)
 124                 throw bad_socket_state("not bound");
 125         return *local_addr;
 126 }
 127
 128 void Socket::set_timeout(const Time::TimeDelta &timeout)
 129 {
 130 #ifndef WIN32
 131         timeval tv = Time::rawtime_to_timeval(timeout.raw());
 132         priv->set_option(SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(timeval));
 133         priv->set_option(SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(timeval));
 134 #else
 135         DWORD msecs = static_cast<DWORD>(timeout/Time::msec);
 136         priv->set_option(SOL_SOCKET, SO_RCVTIMEO, &msecs, sizeof(DWORD));
 137         priv->set_option(SOL_SOCKET, SO_SNDTIMEO, &msecs, sizeof(DWORD));
 138 #endif
 139 }
 140
 141
 142 int Socket::Private::set_option(int level, int optname, const void *optval, socklen_t optlen)
 143 {
 144 #ifdef WIN32
 145         return setsockopt(handle, level, optname, reinterpret_cast<const char *>(optval), optlen);
 146 #else
 147         return setsockopt(handle, level, optname, optval, optlen);
 148 #endif
 149 }
 150
 151 int Socket::Private::get_option(int level, int optname, void *optval, socklen_t *optlen)
 152 {
 153 #ifdef WIN32
 154         return getsockopt(handle, level, optname, reinterpret_cast<char *>(optval), optlen);
 155 #else
 156         return getsockopt(handle, level, optname, optval, optlen);
 157 #endif
 158 }
 159
 160 } // namespace Net
 161 } // namespace Msp