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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libjava/] [gnu/] [java/] [net/] [natPlainDatagramSocketImplWin32.cc] - Rev 14

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/* Copyright (C) 2003  Free Software Foundation
 
   This file is part of libgcj.
 
This software is copyrighted work licensed under the terms of the
Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
details.  */
 
#include <config.h>
#include <platform.h>
#include <string.h>
 
#if HAVE_BSTRING_H
// Needed for bzero, implicitly used by FD_ZERO on IRIX 5.2
#include <bstring.h>
#endif
 
#include <gnu/java/net/PlainDatagramSocketImpl.h>
#include <java/io/IOException.h>
#include <java/net/BindException.h>
#include <java/net/SocketException.h>
#include <java/net/InetAddress.h>
#include <java/net/NetworkInterface.h>
#include <java/net/DatagramPacket.h>
#include <java/net/PortUnreachableException.h>
#include <java/net/SocketTimeoutException.h>
#include <java/lang/InternalError.h>
#include <java/lang/Object.h>
#include <java/lang/Boolean.h>
#include <java/lang/Integer.h>
 
union SockAddr
{
  struct sockaddr_in address;
#ifdef HAVE_INET6
  struct sockaddr_in6 address6;
#endif
};
 
union McastReq
{
#if HAVE_STRUCT_IP_MREQ
  struct ip_mreq mreq;
#endif
#if HAVE_STRUCT_IPV6_MREQ
  struct ipv6_mreq mreq6;
#endif
};
 
union InAddr
{
  struct in_addr addr;
#ifdef HAVE_INET6
  struct in6_addr addr6;
#endif
};
 
// FIXME: routines here and/or in natPlainSocketImpl.cc could throw
// NoRouteToHostException; also consider UnknownHostException, ConnectException.
 
void
gnu::java::net::PlainDatagramSocketImpl::create ()
{
  SOCKET sock = ::socket (AF_INET, SOCK_DGRAM, 0);
 
  if (sock == INVALID_SOCKET)
    {
      _Jv_ThrowSocketException ();
    }
 
  // Cast this to a HANDLE so we can make
  // it non-inheritable via _Jv_platform_close_on_exec.
  HANDLE hSocket = (HANDLE) sock;
  _Jv_platform_close_on_exec (hSocket);
 
  // We use native_fd in place of fd here.  From leaving fd null we avoid
  // the double close problem in FileDescriptor.finalize.
  native_fd = (jint) hSocket;
}
 
void
gnu::java::net::PlainDatagramSocketImpl::bind (jint lport,
					  ::java::net::InetAddress *host)
{
  union SockAddr u;
  struct sockaddr *ptr = (struct sockaddr *) &u.address;
  // FIXME: Use getaddrinfo() to get actual protocol instead of assuming ipv4.
  jbyteArray haddress = host->addr;
  jbyte *bytes = elements (haddress);
  int len = haddress->length;
 
  if (len == 4)
    {
      u.address.sin_family = AF_INET;
 
      if (host != NULL)
        memcpy (&u.address.sin_addr, bytes, len);
      else
        u.address.sin_addr.s_addr = htonl (INADDR_ANY);
 
      len = sizeof (struct sockaddr_in);
      u.address.sin_port = htons (lport);
    }
#ifdef HAVE_INET6
  else if (len == 16)
    {
      u.address6.sin6_family = AF_INET6;
      memcpy (&u.address6.sin6_addr, bytes, len);
      len = sizeof (struct sockaddr_in6);
      u.address6.sin6_port = htons (lport);
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
 
  if (::bind (native_fd, ptr, len) == 0)
    {
      socklen_t addrlen = sizeof(u);
 
      if (lport != 0)
        localPort = lport;
      else if (::getsockname (native_fd, (sockaddr*) &u, &addrlen) == 0)
        localPort = ntohs (u.address.sin_port);
      else
        goto error;
 
      /* Allow broadcast by default. */
      int broadcast = 1;
      if (::setsockopt (native_fd, SOL_SOCKET, SO_BROADCAST, (char *) &broadcast,
                        sizeof (broadcast)) != 0)
        goto error;
 
      return;
    }
 
error:
  DWORD dwErrorCode = WSAGetLastError ();
  throw new ::java::net::BindException (_Jv_WinStrError (dwErrorCode));
}
 
void
gnu::java::net::PlainDatagramSocketImpl::connect (::java::net::InetAddress *, jint)
{ 
  throw new ::java::lang::InternalError (JvNewStringLatin1 (
      "PlainDatagramSocketImpl::connect: not implemented yet"));
}
 
void
gnu::java::net::PlainDatagramSocketImpl::disconnect ()
{
  throw new ::java::lang::InternalError (JvNewStringLatin1 (
      "PlainDatagramSocketImpl::disconnect: not implemented yet"));
}
 
jint
gnu::java::net::PlainDatagramSocketImpl::peek (::java::net::InetAddress *i)
{
  // FIXME: Deal with Multicast and if the socket is connected.
  union SockAddr u;
  socklen_t addrlen = sizeof(u);
  ssize_t retlen =
    ::recvfrom (native_fd, (char *) NULL, 0, MSG_PEEK, (sockaddr*) &u,
      &addrlen);
  if (retlen < 0)
    goto error;
  // FIXME: Deal with Multicast addressing and if the socket is connected.
  jbyteArray raddr;
  jint rport;
  if (u.address.sin_family == AF_INET)
    {
      raddr = JvNewByteArray (4);
      memcpy (elements (raddr), &u.address.sin_addr, 4);
      rport = ntohs (u.address.sin_port);
    }
#ifdef HAVE_INET6
  else if (u.address.sin_family == AF_INET6)
    {
      raddr = JvNewByteArray (16);
      memcpy (elements (raddr), &u.address6.sin6_addr, 16);
      rport = ntohs (u.address6.sin6_port);
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid family"));
 
  i->addr = raddr;
  return rport;
error:
  DWORD dwErrorCode = WSAGetLastError ();
  if (dwErrorCode == WSAECONNRESET)
    throw new ::java::net::PortUnreachableException (_Jv_WinStrError (dwErrorCode));
 
  _Jv_ThrowIOException ();
  return -1;
    // we should never get here
}
 
jint
gnu::java::net::PlainDatagramSocketImpl::peekData(::java::net::DatagramPacket *p)
{
  // FIXME: Deal with Multicast and if the socket is connected.
  union SockAddr u;
  socklen_t addrlen = sizeof(u);
  jbyte *dbytes = elements (p->getData()) + p->getOffset();
  jint maxlen = p->maxlen - p->getOffset();
  ssize_t retlen = 0;
 
  if (timeout > 0)
    {
      int nRet= ::setsockopt(native_fd, SOL_SOCKET, SO_RCVTIMEO,
        (char*)&timeout, sizeof(timeout));
      if (nRet != NO_ERROR)
        goto error;
    }
 
  retlen =
    ::recvfrom (native_fd, (char *) dbytes, maxlen, MSG_PEEK, (sockaddr*) &u,
      &addrlen);
  if (retlen == SOCKET_ERROR)
    goto error;
  // FIXME: Deal with Multicast addressing and if the socket is connected.
  jbyteArray raddr;
  jint rport;
  if (u.address.sin_family == AF_INET)
    {
      raddr = JvNewByteArray (4);
      memcpy (elements (raddr), &u.address.sin_addr, 4);
      rport = ntohs (u.address.sin_port);
    }
#ifdef HAVE_INET6
  else if (u.address.sin_family == AF_INET6)
    {
      raddr = JvNewByteArray (16);
      memcpy (elements (raddr), &u.address6.sin6_addr, 16);
      rport = ntohs (u.address6.sin6_port);
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid family"));
 
  p->setAddress (new ::java::net::InetAddress (raddr, NULL));
  p->setPort (rport);
  p->length = (jint) retlen;
  return rport;
 
error:
  DWORD dwErrorCode = WSAGetLastError ();
  if (dwErrorCode == WSAECONNRESET)
    throw new ::java::net::PortUnreachableException (_Jv_WinStrError (dwErrorCode));
  else if (dwErrorCode == WSAETIMEDOUT)
    throw new ::java::net::SocketTimeoutException (_Jv_WinStrError (dwErrorCode));
  else
    _Jv_ThrowIOException ();
 
  return -1;
    // we should never get here
}
 
// Close(shutdown) the socket.
void
gnu::java::net::PlainDatagramSocketImpl::close ()
{
  // Avoid races from asynchronous finalization.
  JvSynchronize sync (this);
 
  // The method isn't declared to throw anything, so we disregard
  // the return value.
  ::closesocket (native_fd);
  native_fd = -1;
  timeout = 0;
}
 
void
gnu::java::net::PlainDatagramSocketImpl::send (::java::net::DatagramPacket *p)
{
  JvSynchronize lock (SEND_LOCK);
 
  // FIXME: Deal with Multicast and if the socket is connected.
  jint rport = p->getPort();
  union SockAddr u;
  jbyteArray haddress = p->getAddress()->addr;
  jbyte *bytes = elements (haddress);
  int len = haddress->length;
  struct sockaddr *ptr = (struct sockaddr *) &u.address;
  jbyte *dbytes = elements (p->getData()) + p->getOffset();
  if (len == 4)
    {
      u.address.sin_family = AF_INET;
      memcpy (&u.address.sin_addr, bytes, len);
      len = sizeof (struct sockaddr_in);
      u.address.sin_port = htons (rport);
    }
#ifdef HAVE_INET6
  else if (len == 16)
    {
      u.address6.sin6_family = AF_INET6;
      memcpy (&u.address6.sin6_addr, bytes, len);
      len = sizeof (struct sockaddr_in6);
      u.address6.sin6_port = htons (rport);
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
 
  if (::sendto (native_fd, (char *) dbytes, p->getLength(), 0, ptr, len) >= 0)
    return;
 
  DWORD dwErrorCode = WSAGetLastError ();
  if (dwErrorCode == WSAECONNRESET)
    throw new ::java::net::PortUnreachableException (_Jv_WinStrError (dwErrorCode));
 
  _Jv_ThrowIOException ();
}
 
void
gnu::java::net::PlainDatagramSocketImpl::receive (::java::net::DatagramPacket *p)
{
  JvSynchronize lock (RECEIVE_LOCK);
 
  // FIXME: Deal with Multicast and if the socket is connected.
  union SockAddr u;
  socklen_t addrlen = sizeof(u);
  jbyte *dbytes = elements (p->getData()) + p->getOffset();
  jint maxlen = p->maxlen - p->getOffset();
  ssize_t retlen = 0;
 
  if (timeout > 0)
    {
      // This implementation doesn't allow specifying an infinite
      // timeout after specifying a finite one, but Sun's JDK 1.4.1
      // didn't seem to allow this either....
      int nRet= ::setsockopt(native_fd, SOL_SOCKET, SO_RCVTIMEO,
        (char*)&timeout, sizeof(timeout));
      if (nRet != NO_ERROR)
        goto error;
    }
 
  retlen =
    ::recvfrom (native_fd, (char *) dbytes, maxlen, 0, (sockaddr*) &u,
      &addrlen);
  if (retlen < 0)
    goto error;
  // FIXME: Deal with Multicast addressing and if the socket is connected.
  jbyteArray raddr;
  jint rport;
  if (u.address.sin_family == AF_INET)
    {
      raddr = JvNewByteArray (4);
      memcpy (elements (raddr), &u.address.sin_addr, 4);
      rport = ntohs (u.address.sin_port);
    }
#ifdef HAVE_INET6
  else if (u.address.sin_family == AF_INET6)
    {
      raddr = JvNewByteArray (16);
      memcpy (elements (raddr), &u.address6.sin6_addr, 16);
      rport = ntohs (u.address6.sin6_port);
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid family"));
 
  p->setAddress (new ::java::net::InetAddress (raddr, NULL));
  p->setPort (rport);
  p->length = (jint) retlen;
  return;
 
 error:
  DWORD dwErrorCode = WSAGetLastError();
  if (dwErrorCode == WSAECONNRESET)
    throw new ::java::net::PortUnreachableException (_Jv_WinStrError (dwErrorCode));
  else if (dwErrorCode == WSAETIMEDOUT)
    throw new ::java::net::SocketTimeoutException (_Jv_WinStrError (dwErrorCode));
  else
    throw new ::java::io::IOException (_Jv_WinStrError (dwErrorCode));
}
 
void
gnu::java::net::PlainDatagramSocketImpl::setTimeToLive (jint ttl)
{
  // Assumes IPPROTO_IP rather than IPPROTO_IPV6 since socket created is IPv4.
  char val = (char) ttl;
  socklen_t val_len = sizeof(val);
 
  if (::setsockopt (native_fd, IPPROTO_IP, IP_MULTICAST_TTL, &val, val_len) == 0)
    return;
 
  _Jv_ThrowIOException ();
}
 
jint
gnu::java::net::PlainDatagramSocketImpl::getTimeToLive ()
{
  // Assumes IPPROTO_IP rather than IPPROTO_IPV6 since socket created is IPv4.
  char val;
  socklen_t val_len = sizeof(val);
 
  if (::getsockopt (native_fd, IPPROTO_IP, IP_MULTICAST_TTL, &val, &val_len) == 0)
    return ((int) val) & 0xFF;
 
  _Jv_ThrowIOException ();
 
  return -1;
    // we should never get here
}
 
void
gnu::java::net::PlainDatagramSocketImpl::mcastGrp (::java::net::InetAddress *inetaddr,
                                              ::java::net::NetworkInterface *,
					      jboolean join)
{
  // FIXME: implement use of NetworkInterface
  jbyteArray haddress = inetaddr->addr;
  int len = haddress->length;
  int level, opname;
  const char *ptr;
  if (0)
    ;
#if HAVE_STRUCT_IP_MREQ
  else if (len == 4)
    {
      level = IPPROTO_IP;
      opname = join ? IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP;
      memcpy (&u.mreq.imr_multiaddr, bytes, len);
      // FIXME:  If a non-default interface is set, use it; see Stevens p. 501.
      // Maybe not, see note in last paragraph at bottom of Stevens p. 497.
      u.mreq.imr_interface.s_addr = htonl (INADDR_ANY);
      len = sizeof (struct ip_mreq);
      ptr = (const char *) &u.mreq;
    }
#endif
#if HAVE_STRUCT_IPV6_MREQ
  else if (len == 16)
    {
      level = IPPROTO_IPV6;
 
      /* Prefer new RFC 2553 names.  */
#ifndef IPV6_JOIN_GROUP
#define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
#endif
#ifndef IPV6_LEAVE_GROUP
#define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
#endif
 
      opname = join ? IPV6_JOIN_GROUP : IPV6_LEAVE_GROUP;
      memcpy (&u.mreq6.ipv6mr_multiaddr, bytes, len);
      // FIXME:  If a non-default interface is set, use it; see Stevens p. 501.
      // Maybe not, see note in last paragraph at bottom of Stevens p. 497.
      u.mreq6.ipv6mr_interface = 0;
      len = sizeof (struct ipv6_mreq);
      ptr = (const char *) &u.mreq6;
    }
#endif
  else
    throw new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
 
  if (::setsockopt (native_fd, level, opname, ptr, len) == 0)
    return;
 
  _Jv_ThrowIOException ();
}
 
void
gnu::java::net::PlainDatagramSocketImpl::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$))
    {
      ::java::lang::Boolean *boolobj = 
        static_cast< ::java::lang::Boolean *> (value);
      val = boolobj->booleanValue() ? 1 : 0;
    }
  else if (_Jv_IsInstanceOf (value, &::java::lang::Integer::class$))
    {
      ::java::lang::Integer *intobj = 
        static_cast< ::java::lang::Integer *> (value);          
      val = (int) intobj->intValue();
    }
  // Else assume value to be an InetAddress for use with IP_MULTICAST_IF.
 
  switch (optID)
    {
      case _Jv_TCP_NODELAY_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("TCP_NODELAY not valid for UDP"));
        return;
      case _Jv_SO_LINGER_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_LINGER not valid for UDP"));
        return;
      case _Jv_SO_KEEPALIVE_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_KEEPALIVE not valid for UDP"));
        return;
 
      case _Jv_SO_BROADCAST_ :
        if (::setsockopt (native_fd, SOL_SOCKET, SO_BROADCAST, (char *) &val,
                          val_len) != 0)
          goto error;
  break;
 
      case _Jv_SO_OOBINLINE_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_OOBINLINE: not valid for UDP"));
        break;
 
      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) != 0)
    goto error;
        return;
      case _Jv_SO_REUSEADDR_ :
  if (::setsockopt (native_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &val,
      val_len) != 0)
    goto error;
  return;
      case _Jv_SO_BINDADDR_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_BINDADDR: read only option"));
        return;
      case _Jv_IP_MULTICAST_IF_ :
  union InAddr u;
        jbyteArray haddress;
  jbyte *bytes;
  int len;
  int level, opname;
  const char *ptr;
 
  haddress = ((::java::net::InetAddress *) value)->addr;
  bytes = elements (haddress);
  len = haddress->length;
  if (len == 4)
    {
      level = IPPROTO_IP;
      opname = IP_MULTICAST_IF;
      memcpy (&u.addr, bytes, len);
      len = sizeof (struct in_addr);
      ptr = (const char *) &u.addr;
    }
// Tru64 UNIX V5.0 has struct sockaddr_in6, but no IPV6_MULTICAST_IF
#if defined (HAVE_INET6) && defined (IPV6_MULTICAST_IF)
  else if (len == 16)
    {
      level = IPPROTO_IPV6;
      opname = IPV6_MULTICAST_IF;
      memcpy (&u.addr6, bytes, len);
      len = sizeof (struct in6_addr);
      ptr = (const char *) &u.addr6;
    }
#endif
  else
    throw
      new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
 
  if (::setsockopt (native_fd, level, opname, ptr, len) != 0)
    goto error;
        return;
 
      case _Jv_IP_MULTICAST_IF2_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_IF2: not yet implemented"));
        break;
 
      case _Jv_IP_MULTICAST_LOOP_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_LOOP: not yet implemented"));
        break;
 
      case _Jv_IP_TOS_ :
        if (::setsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
     val_len) != 0)
    goto error;
  return;
 
      case _Jv_SO_TIMEOUT_ :
  timeout = val;
        return;
      default :
        WSASetLastError (WSAENOPROTOOPT);
    }
 
 error:
  _Jv_ThrowSocketException ();
}
 
::java::lang::Object *
gnu::java::net::PlainDatagramSocketImpl::getOption (jint optID)
{
  int val;
  socklen_t val_len = sizeof(val);
  union SockAddr u;
  socklen_t addrlen = sizeof(u);
 
  switch (optID)
    {
      case _Jv_TCP_NODELAY_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("TCP_NODELAY not valid for UDP"));
        break;
      case _Jv_SO_LINGER_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_LINGER not valid for UDP"));
        break;
      case _Jv_SO_KEEPALIVE_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_KEEPALIVE not valid for UDP"));
        break;
 
      case _Jv_SO_BROADCAST_ :
  if (::getsockopt (native_fd, SOL_SOCKET, SO_BROADCAST, (char *) &val,
      &val_len) != 0)
    goto error;
  return new ::java::lang::Boolean (val != 0);
 
      case _Jv_SO_OOBINLINE_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("SO_OOBINLINE not valid for UDP"));
        break;
 
      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) != 0)
    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) != 0)
        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_SO_REUSEADDR_ :
  if (::getsockopt (native_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &val,
      &val_len) != 0)
    goto error;
  return new ::java::lang::Boolean (val != 0);
  break;
      case _Jv_IP_MULTICAST_IF_ :
  struct in_addr inaddr;
    socklen_t inaddr_len;
  char *bytes;
 
    inaddr_len = sizeof(inaddr);
  if (::getsockopt (native_fd, IPPROTO_IP, IP_MULTICAST_IF, (char *) &inaddr,
      &inaddr_len) != 0)
    goto error;
 
  bytes = inet_ntoa (inaddr);
 
  return ::java::net::InetAddress::getByName (JvNewStringLatin1 (bytes));
  break;
      case _Jv_SO_TIMEOUT_ :
	return new ::java::lang::Integer (timeout);
	break;
 
      case _Jv_IP_MULTICAST_IF2_ :
        throw new ::java::net::SocketException (
          JvNewStringUTF ("IP_MULTICAST_IF2: not yet implemented"));
        break;
 
      case _Jv_IP_MULTICAST_LOOP_ :
  if (::getsockopt (native_fd, SOL_SOCKET, IP_MULTICAST_LOOP, (char *) &val,
      &val_len) != 0)
    goto error;
  return new ::java::lang::Boolean (val != 0);
 
      case _Jv_IP_TOS_ :
        if (::getsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
           &val_len) != 0)
          goto error;
        return new ::java::lang::Integer (val);
 
      default :
        WSASetLastError (WSAENOPROTOOPT);
    }
 
error:
  _Jv_ThrowSocketException ();
  return 0;
    // we should never get here
}
 

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