natplainsocketimplwin32.cc

gcc的组建

  jbyte *bytes = elements (b) + offset;
  int written = 0;
  while (len > 0)
    {
      int r = ::send (this$0->native_fd, (char*) bytes, len, 0);

      if (r == -1)
        {
          DWORD dwErr = WSAGetLastError();

          // Reset and ignore our thread's interrupted flag.
          ::java::lang::Thread::interrupted();

          // Some errors should not cause exceptions.
          if (dwErr != WSAENOTCONN && dwErr != WSAECONNRESET
            && dwErr != WSAENOTSOCK)
            _Jv_ThrowIOException ();
          break;
        }

      written += r;
      len -= r;
      bytes += r;
    }
}

void
gnu::java::net::PlainSocketImpl::sendUrgentData (jint)
{
  throw new ::java::net::SocketException (JvNewStringLatin1 (
    "PlainSocketImpl: sending of urgent data not supported by this socket"));
}

// read() helper
static jint
doRead(int native_fd, void* buf, int count, int timeout)
{
  int r = 0;
  DWORD dwErrorCode = 0;
    // we are forced to declare this here because
    // a call to Thread::interrupted() blanks out
    // WSAGetLastError().

  // FIXME: we unconditionally set SO_RCVTIMEO here
  // because we can't detect whether someone has
  // gone from a non-zero to zero timeout. What we'd
  // really need is a member state variable in addition
  // to timeout
  int nRet= ::setsockopt(native_fd, SOL_SOCKET, SO_RCVTIMEO,
    (char*)&timeout, sizeof(timeout));
  if (nRet != NO_ERROR)
  {
    dwErrorCode = WSAGetLastError ();
    goto error;
  }
  
  r = ::recv (native_fd, (char*) buf, count, 0);

  if (r == 0)
    return -1;

  dwErrorCode = WSAGetLastError ();
    // save WSAGetLastError() before calling Thread.interrupted()
  
  // Reset and ignore our thread's interrupted flag.
  ::java::lang::Thread::interrupted();
  
  if (r == -1)
    {
error:
      // Some errors cause us to return end of stream...
      if (dwErrorCode == WSAENOTCONN)
        return -1;

      // Other errors need to be signalled.
      if (dwErrorCode == WSAETIMEDOUT)
        throw new ::java::net::SocketTimeoutException
          (JvNewStringUTF ("Read timed out") );
      else
        _Jv_ThrowIOException (dwErrorCode);
    }
    
   return r;
}

// Read a single byte from the socket.
jint
gnu::java::net::PlainSocketImpl$SocketInputStream::read(void)
{
  jbyte b;
  doRead(this$0->native_fd, &b, 1, this$0->timeout);
  return b & 0xFF;
}

// Read count bytes into the buffer, starting at offset.
jint
gnu::java::net::PlainSocketImpl$SocketInputStream::read(jbyteArray buffer,
  jint offset, jint count)
{
  // If zero bytes were requested, short circuit so that recv
  // doesn't signal EOF.
  if (count == 0)
    return 0;

  if (! buffer)
    throw new ::java::lang::NullPointerException;

  jsize bsize = JvGetArrayLength (buffer);

  if (offset < 0 || count < 0 || offset + count > bsize)
    throw new ::java::lang::ArrayIndexOutOfBoundsException;

  jbyte *bytes = elements (buffer) + offset;

  // Read the socket.
  return doRead(this$0->native_fd, bytes, count, this$0->timeout);
}

// How many bytes are available?
jint
gnu::java::net::PlainSocketImpl::available(void)
{
  unsigned long num = 0;

  if (::ioctlsocket (native_fd, FIONREAD, &num) == SOCKET_ERROR)
    _Jv_ThrowIOException ();

  return (jint) num;
}

void
gnu::java::net::PlainSocketImpl::setOption (jint optID, ::java::lang::Object *value)
{
  int val;
  socklen_t val_len = sizeof (val);

  if (native_fd < 0)
    throw new ::java::net::SocketException (JvNewStringUTF ("Socket closed"));

  if (_Jv_IsInstanceOf (value, &::java::lang::Boolean::class$))
    {
      ::java::lang::Boolean *boolobj =
        static_cast< ::java::lang::Boolean *> (value);
      if (boolobj->booleanValue())
        val = 1;
      else
        {
          if (optID == _Jv_SO_LINGER_)
            val = -1;
          else
            val = 0;
        }
    }
  else if (_Jv_IsInstanceOf (value, &::java::lang::Integer::class$))
    {
      ::java::lang::Integer *intobj =
        static_cast< ::java::lang::Integer *> (value);
      val = (int) intobj->intValue();
    }
  else
    {
      throw new ::java::lang::IllegalArgumentException (
        JvNewStringLatin1 ("`value' must be Boolean or Integer"));
    }

  switch (optID)
    {
      case _Jv_TCP_NODELAY_ :
        if (::setsockopt (native_fd, IPPROTO_TCP, TCP_NODELAY, (char *) &val,
                          val_len) == SOCKET_ERROR)
          goto error;
        return;

      case _Jv_SO_KEEPALIVE_ :
        if (::setsockopt (native_fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &val,
                          val_len) == SOCKET_ERROR)
          goto error;
        break;

      case _Jv_SO_BROADCAST_ :
        throw new ::java::net::SocketException
          (JvNewStringUTF ("SO_BROADCAST not valid for TCP"));
        break;

      case _Jv_SO_OOBINLINE_ :
        if (::setsockopt (native_fd, SOL_SOCKET, SO_OOBINLINE, (char *) &val,
                          val_len) == SOCKET_ERROR)
          goto error;
        break;

      case _Jv_SO_LINGER_ :
        struct linger l_val;
        l_val.l_onoff = (val != -1);
        l_val.l_linger = val;

        if (::setsockopt (native_fd, SOL_SOCKET, SO_LINGER, (char *) &l_val,
                          sizeof(l_val)) == SOCKET_ERROR)
          goto error;
        return;

      case _Jv_SO_SNDBUF_ :
      case _Jv_SO_RCVBUF_ :
        int opt;
        optID == _Jv_SO_SNDBUF_ ? opt = SO_SNDBUF : opt = SO_RCVBUF;
        if (::setsockopt (native_fd, SOL_SOCKET, opt, (char *) &val,
                          val_len) == SOCKET_ERROR)
          goto error;
        return;

      case _Jv_SO_BINDADDR_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_BINDADDR: read only option"));
        return;

      case _Jv_IP_MULTICAST_IF_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_IF: not valid for TCP"));
        return;

      case _Jv_IP_MULTICAST_IF2_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_IF2: not valid for TCP"));
        break;

      case _Jv_IP_MULTICAST_LOOP_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_LOOP: not valid for TCP"));
        break;

      case _Jv_IP_TOS_ :
        if (::setsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
                          val_len) == SOCKET_ERROR)
          goto error;
        break;

      case _Jv_SO_REUSEADDR_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_REUSEADDR: not valid for TCP"));
        return;

      case _Jv_SO_TIMEOUT_ :
        timeout = val;
        return;

      default :
        WSASetLastError (WSAENOPROTOOPT);
    }

error:
  _Jv_ThrowSocketException ();
}

::java::lang::Object *
gnu::java::net::PlainSocketImpl::getOption (jint optID)
{
  int val;
  socklen_t val_len = sizeof(val);
  union SockAddr u;
  socklen_t addrlen = sizeof(u);
  struct linger l_val;
  socklen_t l_val_len = sizeof(l_val);

  switch (optID)
    {
    case _Jv_TCP_NODELAY_ :
      if (::getsockopt (native_fd, IPPROTO_TCP, TCP_NODELAY, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      else
        return new ::java::lang::Boolean (val != 0);
      break;

    case _Jv_SO_LINGER_ :
      if (::getsockopt (native_fd, SOL_SOCKET, SO_LINGER, (char *) &l_val,
                        &l_val_len) == SOCKET_ERROR)
        goto error;

      if (l_val.l_onoff)
        return new ::java::lang::Integer (l_val.l_linger);
      else
        return new ::java::lang::Boolean ((jboolean)false);
      break;

    case _Jv_SO_KEEPALIVE_ :
      if (::getsockopt (native_fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      else
        return new ::java::lang::Boolean (val != 0);

    case _Jv_SO_BROADCAST_ :
      if (::getsockopt (native_fd, SOL_SOCKET, SO_BROADCAST, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      return new ::java::lang::Boolean ((jboolean)val);

    case _Jv_SO_OOBINLINE_ :
      if (::getsockopt (native_fd, SOL_SOCKET, SO_OOBINLINE, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      return new ::java::lang::Boolean ((jboolean)val);

    case _Jv_SO_RCVBUF_ :
    case _Jv_SO_SNDBUF_ :
      int opt;
      optID == _Jv_SO_SNDBUF_ ? opt = SO_SNDBUF : opt = SO_RCVBUF;
      if (::getsockopt (native_fd, SOL_SOCKET, opt, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      else
        return new ::java::lang::Integer (val);
      break;
    case _Jv_SO_BINDADDR_:
      // cache the local address
      if (localAddress == NULL)
        {
          jbyteArray laddr;

          if (::getsockname (native_fd, (sockaddr*) &u,
                             &addrlen) == SOCKET_ERROR)
            goto error;

          if (u.address.sin_family == AF_INET)
            {
              laddr = JvNewByteArray (4);
              memcpy (elements (laddr), &u.address.sin_addr, 4);
            }
#ifdef HAVE_INET6
          else if (u.address.sin_family == AF_INET6)
            {
              laddr = JvNewByteArray (16);
              memcpy (elements (laddr), &u.address6.sin6_addr, 16);
            }
#endif
          else
            throw new ::java::net::SocketException
              (JvNewStringUTF ("invalid family"));
          localAddress = new ::java::net::InetAddress (laddr, NULL);
        }

      return localAddress;
      break;
    case _Jv_IP_MULTICAST_IF_ :
      throw new ::java::net::SocketException
        (JvNewStringUTF ("IP_MULTICAST_IF: not valid for TCP"));
      break;

    case _Jv_IP_MULTICAST_IF2_ :
      throw new ::java::net::SocketException
        (JvNewStringUTF ("IP_MULTICAST_IF2: not valid for TCP"));
      break;

    case _Jv_IP_MULTICAST_LOOP_ :
      throw new ::java::net::SocketException
        (JvNewStringUTF ("IP_MULTICAST_LOOP: not valid for TCP"));
      break;

    case _Jv_IP_TOS_ :
      if (::getsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
                        &val_len) == SOCKET_ERROR)
        goto error;
      return new ::java::lang::Integer (val);
      break;

    case _Jv_SO_REUSEADDR_ :
      throw new ::java::net::SocketException
        (JvNewStringUTF ("SO_REUSEADDR: not valid for TCP"));
      break;

    case _Jv_SO_TIMEOUT_ :
      return new ::java::lang::Integer (timeout);
      break;

    default :
      WSASetLastError (WSAENOPROTOOPT);
    }

error:
  _Jv_ThrowSocketException ();
  return 0;
    // we should never get here
}

void
gnu::java::net::PlainSocketImpl::shutdownInput (void)
{
  if (::shutdown (native_fd, 0))
    _Jv_ThrowSocketException ();
}

void
gnu::java::net::PlainSocketImpl::shutdownOutput (void)
{
  if (::shutdown (native_fd, 1))
    _Jv_ThrowSocketException ();
}