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|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "q3socketdevice.h"
#include "qwindowdefs.h"
#include "qdatetime.h"
#include <qcoreapplication.h>
#include <string.h>
#if defined (QT_NO_IPV6)
# include <windows.h>
# include <winsock.h>
#else
# if defined (Q_CC_BOR) || defined (Q_CC_GNU)
# include <winsock2.h>
# elif defined (Q_CC_INTEL)
# include <winsock.h>
# else
# include <windows.h>
# if defined(Q_OS_WINCE)
# include <winsock.h>
# endif
# endif
// Use our own defines and structs which we know are correct
# define QT_SS_MAXSIZE 128
# define QT_SS_ALIGNSIZE (sizeof(__int64))
# define QT_SS_PAD1SIZE (QT_SS_ALIGNSIZE - sizeof (short))
# define QT_SS_PAD2SIZE (QT_SS_MAXSIZE - (sizeof (short) + QT_SS_PAD1SIZE + QT_SS_ALIGNSIZE))
QT_BEGIN_NAMESPACE
struct qt_sockaddr_storage {
short ss_family;
char __ss_pad1[QT_SS_PAD1SIZE];
__int64 __ss_align;
char __ss_pad2[QT_SS_PAD2SIZE];
};
// sockaddr_in6 size changed between old and new SDK
// Only the new version is the correct one, so always
// use this structure.
struct qt_in6_addr {
u_char qt_s6_addr[16];
};
typedef struct {
short sin6_family; /* AF_INET6 */
u_short sin6_port; /* Transport level port number */
u_long sin6_flowinfo; /* IPv6 flow information */
struct qt_in6_addr sin6_addr; /* IPv6 address */
u_long sin6_scope_id; /* set of interfaces for a scope */
} qt_sockaddr_in6;
#endif
#ifndef AF_INET6
#define AF_INET6 23 /* Internetwork Version 6 */
#endif
#ifndef NO_ERRNO_H
QT_BEGIN_INCLUDE_NAMESPACE
# if defined(Q_OS_WINCE)
# include "qfunctions_wince.h"
# else
# include <errno.h>
# endif
QT_END_INCLUDE_NAMESPACE
#endif
#if defined(SOCKLEN_T)
#undef SOCKLEN_T
#endif
#define SOCKLEN_T int // #### Winsock 1.1
static int initialized = 0x00; // Holds the Winsock version
static void cleanupWinSock() // post-routine
{
WSACleanup();
initialized = 0x00;
}
static inline void qt_socket_getportaddr( struct sockaddr *sa,
quint16 *port, QHostAddress *addr )
{
#if !defined (QT_NO_IPV6)
if (sa->sa_family == AF_INET6) {
qt_sockaddr_in6 *sa6 = (qt_sockaddr_in6 *)sa;
Q_IPV6ADDR tmp;
for ( int i = 0; i < 16; ++i )
tmp.c[i] = sa6->sin6_addr.qt_s6_addr[i];
QHostAddress a( tmp );
*addr = a;
*port = ntohs( sa6->sin6_port );
return;
}
#endif
struct sockaddr_in *sa4 = (struct sockaddr_in *)sa;
QHostAddress a( ntohl( sa4->sin_addr.s_addr ) );
*port = ntohs( sa4->sin_port );
*addr = a;
}
void Q3SocketDevice::init()
{
#if !defined(QT_NO_IPV6)
if ( !initialized ) {
WSAData wsadata;
// IPv6 requires Winsock v2.0 or better.
if ( WSAStartup( MAKEWORD(2,0), &wsadata ) != 0 ) {
# if defined(QSOCKETDEVICE_DEBUG)
qDebug( "Q3SocketDevice: WinSock v2.0 initialization failed, disabling IPv6 support." );
# endif
} else {
qAddPostRoutine( cleanupWinSock );
initialized = 0x20;
return;
}
}
#endif
if (!initialized) {
WSAData wsadata;
if ( WSAStartup( MAKEWORD(1,1), &wsadata ) != 0 ) {
#if defined(QT_CHECK_NULL)
qWarning( "Q3SocketDevice: WinSock initialization failed" );
#endif
#if defined(QSOCKETDEVICE_DEBUG)
qDebug( "Q3SocketDevice: WinSock initialization failed" );
#endif
return;
}
qAddPostRoutine( cleanupWinSock );
initialized = 0x11;
}
}
Q3SocketDevice::Protocol Q3SocketDevice::getProtocol() const
{
if ( isValid() ) {
#if !defined (QT_NO_IPV6)
struct qt_sockaddr_storage sa;
#else
struct sockaddr_in sa;
#endif
memset( &sa, 0, sizeof(sa) );
SOCKLEN_T sz = sizeof( sa );
if ( !::getsockname(fd, (struct sockaddr *)&sa, &sz) ) {
#if !defined (QT_NO_IPV6)
switch ( sa.ss_family ) {
case AF_INET:
return IPv4;
case AF_INET6:
return IPv6;
default:
return Unknown;
}
#else
switch ( sa.sin_family ) {
case AF_INET:
return IPv4;
default:
return Unknown;
}
#endif
}
}
return Unknown;
}
int Q3SocketDevice::createNewSocket( )
{
#if !defined(QT_NO_IPV6)
SOCKET s;
// Support IPv6 for Winsock v2.0++
if ( initialized >= 0x20 && protocol() == IPv6 ) {
s = ::socket( AF_INET6, t==Datagram?SOCK_DGRAM:SOCK_STREAM, 0 );
} else {
s = ::socket( AF_INET, t==Datagram?SOCK_DGRAM:SOCK_STREAM, 0 );
}
#else
SOCKET s = ::socket( AF_INET, t==Datagram?SOCK_DGRAM:SOCK_STREAM, 0 );
#endif
if ( s == INVALID_SOCKET ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
// ### what to use here?
e = NetworkFailure;
//e = Inaccessible;
break;
case WSAEMFILE:
e = NoFiles; // special case for this
break;
case WSAEINPROGRESS:
case WSAENOBUFS:
e = NoResources;
break;
case WSAEAFNOSUPPORT:
case WSAEPROTOTYPE:
case WSAEPROTONOSUPPORT:
case WSAESOCKTNOSUPPORT:
e = InternalError;
break;
default:
e = UnknownError;
break;
}
} else {
return s;
}
return -1;
}
void Q3SocketDevice::close()
{
if ( fd == -1 || !isOpen() ) // already closed
return;
resetStatus();
setOpenMode(NotOpen);
::closesocket( fd );
#if defined(QSOCKETDEVICE_DEBUG)
qDebug( "Q3SocketDevice::close: Closed socket %x", fd );
#endif
fd = -1;
fetchConnectionParameters();
QIODevice::close();
}
bool Q3SocketDevice::blocking() const
{
return true;
}
void Q3SocketDevice::setBlocking( bool enable )
{
#if defined(QSOCKETDEVICE_DEBUG)
qDebug( "Q3SocketDevice::setBlocking( %d )", enable );
#endif
if ( !isValid() )
return;
unsigned long dummy = enable ? 0 : 1;
ioctlsocket( fd, FIONBIO, &dummy );
}
int Q3SocketDevice::option( Option opt ) const
{
if ( !isValid() )
return -1;
int n = -1;
int v = -1;
switch ( opt ) {
case Broadcast:
n = SO_BROADCAST;
break;
case ReceiveBuffer:
n = SO_RCVBUF;
break;
case ReuseAddress:
n = SO_REUSEADDR;
break;
case SendBuffer:
n = SO_SNDBUF;
break;
}
if ( n != -1 ) {
SOCKLEN_T len = sizeof(v);
int r = ::getsockopt( fd, SOL_SOCKET, n, (char*)&v, &len );
if ( r != SOCKET_ERROR )
return v;
if ( !e ) {
Q3SocketDevice *that = (Q3SocketDevice*)this; // mutable function
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
that->e = Impossible;
break;
case WSAENETDOWN:
that->e = NetworkFailure;
break;
case WSAEFAULT:
case WSAEINVAL:
case WSAENOPROTOOPT:
that->e = InternalError;
break;
case WSAEINPROGRESS:
that->e = NoResources;
break;
case WSAENOTSOCK:
that->e = Impossible;
break;
default:
that->e = UnknownError;
break;
}
}
return -1;
}
return v;
}
void Q3SocketDevice::setOption( Option opt, int v )
{
if ( !isValid() )
return;
int n = -1; // for really, really bad compilers
switch ( opt ) {
case Broadcast:
n = SO_BROADCAST;
break;
case ReceiveBuffer:
n = SO_RCVBUF;
break;
case ReuseAddress:
n = SO_REUSEADDR;
break;
case SendBuffer:
n = SO_SNDBUF;
break;
default:
return;
}
int r = ::setsockopt( fd, SOL_SOCKET, n, (char*)&v, sizeof(v) );
if ( r == SOCKET_ERROR && e == NoError ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
e = NetworkFailure;
break;
case WSAEFAULT:
case WSAEINVAL:
case WSAENOPROTOOPT:
e = InternalError;
break;
case WSAEINPROGRESS:
e = NoResources;
break;
case WSAENETRESET:
case WSAENOTCONN:
e = Impossible; // ### ?
break;
case WSAENOTSOCK:
e = Impossible;
break;
default:
e = UnknownError;
break;
}
}
}
bool Q3SocketDevice::connect( const QHostAddress &addr, quint16 port )
{
if ( !isValid() )
return false;
pa = addr;
pp = port;
struct sockaddr_in a4;
struct sockaddr *aa;
SOCKLEN_T aalen;
#if !defined(QT_NO_IPV6)
qt_sockaddr_in6 a6;
if ( initialized >= 0x20 && addr.isIPv6Address() ) {
memset(&a6, 0, sizeof(a6));
a6.sin6_family = AF_INET6;
a6.sin6_port = htons( port );
Q_IPV6ADDR ip6 = addr.toIPv6Address();
memcpy( &a6.sin6_addr.qt_s6_addr, &ip6, sizeof(ip6) );
aalen = sizeof( a6 );
aa = (struct sockaddr *)&a6;
} else
#endif
if ( addr.isIPv4Address() ) {
memset(&a4, 0, sizeof(a4));
a4.sin_family = AF_INET;
a4.sin_port = htons(port);
a4.sin_addr.s_addr = htonl(addr.toIPv4Address());
aalen = sizeof(a4);
aa = (struct sockaddr *)&a4;
} else {
e = Impossible;
return false;
}
int r = ::connect( fd, aa, aalen );
if ( r == SOCKET_ERROR )
{
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
e = NetworkFailure;
break;
case WSAEADDRINUSE:
case WSAEINPROGRESS:
case WSAENOBUFS:
e = NoResources;
break;
case WSAEINTR:
e = UnknownError; // ### ?
break;
case WSAEALREADY:
// ### ?
break;
case WSAEADDRNOTAVAIL:
e = ConnectionRefused; // ### ?
break;
case WSAEAFNOSUPPORT:
case WSAEFAULT:
e = InternalError;
break;
case WSAEINVAL:
break;
case WSAECONNREFUSED:
e = ConnectionRefused;
break;
case WSAEISCONN:
goto successful;
case WSAENETUNREACH:
case WSAETIMEDOUT:
e = NetworkFailure;
break;
case WSAENOTSOCK:
e = Impossible;
break;
case WSAEWOULDBLOCK:
break;
case WSAEACCES:
e = Inaccessible;
break;
case 10107:
// Workaround for a problem with the WinSock Proxy Server. See
// also support/arc-12/25557 for details on the problem.
goto successful;
default:
e = UnknownError;
break;
}
return false;
}
successful:
fetchConnectionParameters();
return true;
}
bool Q3SocketDevice::bind( const QHostAddress &address, quint16 port )
{
if ( !isValid() )
return false;
int r;
struct sockaddr_in a4;
#if !defined(QT_NO_IPV6)
qt_sockaddr_in6 a6;
if ( initialized >= 0x20 && address.isIPv6Address() ) {
memset( &a6, 0, sizeof(a6) );
a6.sin6_family = AF_INET6;
a6.sin6_port = htons( port );
Q_IPV6ADDR tmp = address.toIPv6Address();
memcpy( &a6.sin6_addr.qt_s6_addr, &tmp, sizeof(tmp) );
r = ::bind( fd, (struct sockaddr *)&a6, sizeof(struct qt_sockaddr_storage) );
} else
#endif
if ( address.isIPv4Address() ) {
memset( &a4, 0, sizeof(a4) );
a4.sin_family = AF_INET;
a4.sin_port = htons( port );
a4.sin_addr.s_addr = htonl( address.toIPv4Address() );
r = ::bind( fd, (struct sockaddr*)&a4, sizeof(struct sockaddr_in) );
} else {
e = Impossible;
return false;
}
if ( r == SOCKET_ERROR ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
e = NetworkFailure;
break;
case WSAEACCES:
e = Inaccessible;
break;
case WSAEADDRNOTAVAIL:
e = Inaccessible;
break;
case WSAEFAULT:
e = InternalError;
break;
case WSAEINPROGRESS:
case WSAENOBUFS:
e = NoResources;
break;
case WSAEADDRINUSE:
case WSAEINVAL:
e = AlreadyBound;
break;
case WSAENOTSOCK:
e = Impossible;
break;
default:
e = UnknownError;
break;
}
return false;
}
fetchConnectionParameters();
return true;
}
bool Q3SocketDevice::listen( int backlog )
{
if ( !isValid() )
return false;
if ( ::listen( fd, backlog ) >= 0 )
return true;
if ( !e )
e = Impossible;
return false;
}
int Q3SocketDevice::accept()
{
if ( !isValid() )
return -1;
#if !defined(QT_NO_IPV6)
struct qt_sockaddr_storage a;
#else
struct sockaddr a;
#endif
SOCKLEN_T l = sizeof(a);
bool done;
SOCKET s;
do {
s = ::accept( fd, (struct sockaddr*)&a, &l );
// we'll blithely throw away the stuff accept() wrote to a
done = true;
if ( s == INVALID_SOCKET && e == NoError ) {
switch( WSAGetLastError() ) {
case WSAEINTR:
done = false;
break;
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
case WSAEOPNOTSUPP:
// in all these cases, an error happened during connection
// setup. we're not interested in what happened, so we
// just treat it like the client-closed-quickly case.
break;
case WSAEFAULT:
e = InternalError;
break;
case WSAEMFILE:
case WSAEINPROGRESS:
case WSAENOBUFS:
e = NoResources;
break;
case WSAEINVAL:
case WSAENOTSOCK:
e = Impossible;
break;
case WSAEWOULDBLOCK:
break;
default:
e = UnknownError;
break;
}
}
} while (!done);
return s;
}
qint64 Q3SocketDevice::bytesAvailable() const
{
if ( !isValid() )
return -1;
u_long nbytes = 0;
if ( ::ioctlsocket(fd, FIONREAD, &nbytes) < 0 )
return -1;
// ioctlsocket sometimes reports 1 byte available for datagrams
// while the following recvfrom returns -1 and claims connection
// was reset (udp is connectionless). so we peek one byte to
// catch this case and return 0 bytes available if recvfrom
// fails.
if (nbytes == 1 && t == Datagram) {
char c;
if (::recvfrom(fd, &c, sizeof(c), MSG_PEEK, 0, 0) == SOCKET_ERROR)
return 0;
}
return nbytes;
}
Q_LONG Q3SocketDevice::waitForMore( int msecs, bool *timeout ) const
{
if ( !isValid() )
return -1;
fd_set fds;
memset(&fds, 0, sizeof(fd_set));
fds.fd_count = 1;
fds.fd_array[0] = fd;
struct timeval tv;
tv.tv_sec = msecs / 1000;
tv.tv_usec = (msecs % 1000) * 1000;
int rv = select( fd+1, &fds, 0, 0, msecs < 0 ? 0 : &tv );
if ( rv < 0 )
return -1;
if ( timeout ) {
if ( rv == 0 )
*timeout = true;
else
*timeout = false;
}
return bytesAvailable();
}
qint64 Q3SocketDevice::readData( char *data, qint64 maxlen )
{
#if defined(QT_CHECK_NULL)
if ( data == 0 && maxlen != 0 ) {
qWarning( "Q3SocketDevice::readBlock: Null pointer error" );
}
#endif
#if defined(QT_CHECK_STATE)
if ( !isValid() ) {
qWarning( "Q3SocketDevice::readBlock: Invalid socket" );
return -1;
}
if ( !isOpen() ) {
qWarning( "Q3SocketDevice::readBlock: Device is not open" );
return -1;
}
if ( !isReadable() ) {
qWarning( "Q3SocketDevice::readBlock: Read operation not permitted" );
return -1;
}
#endif
qint64 r = 0;
if ( t == Datagram ) {
#if !defined(QT_NO_IPV6)
// With IPv6 support, we must be prepared to receive both IPv4
// and IPv6 packets. The generic SOCKADDR_STORAGE (struct
// sockaddr_storage on unix) replaces struct sockaddr.
struct qt_sockaddr_storage a;
#else
struct sockaddr_in a;
#endif
memset( &a, 0, sizeof(a) );
SOCKLEN_T sz;
sz = sizeof( a );
r = ::recvfrom( fd, data, maxlen, 0, (struct sockaddr *)&a, &sz );
qt_socket_getportaddr( (struct sockaddr *)(&a), &pp, &pa );
} else {
r = ::recv( fd, data, maxlen, 0 );
}
if ( r == 0 && t == Stream && maxlen > 0 ) {
if ( WSAGetLastError() != WSAEWOULDBLOCK ) {
// connection closed
close();
}
} else if ( r == SOCKET_ERROR && e == NoError ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAECONNABORTED:
close();
r = 0;
break;
case WSAETIMEDOUT:
case WSAECONNRESET:
/*
From msdn doc:
On a UDP datagram socket this error would indicate that a previous
send operation resulted in an ICMP "Port Unreachable" message.
So we should not close this socket just because one sendto failed.
*/
if ( t != Datagram )
close(); // connection closed
r = 0;
break;
case WSAENETDOWN:
case WSAENETRESET:
e = NetworkFailure;
break;
case WSAEFAULT:
case WSAENOTCONN:
case WSAESHUTDOWN:
case WSAEINVAL:
e = Impossible;
break;
case WSAEINTR:
// ### ?
r = 0;
break;
case WSAEINPROGRESS:
e = NoResources;
break;
case WSAENOTSOCK:
e = Impossible;
break;
case WSAEOPNOTSUPP:
e = InternalError; // ### ?
break;
case WSAEWOULDBLOCK:
break;
case WSAEMSGSIZE:
e = NoResources; // ### ?
break;
case WSAEISCONN:
// ### ?
r = 0;
break;
default:
e = UnknownError;
break;
}
}
return r;
}
qint64 Q3SocketDevice::writeData( const char *data, qint64 len )
{
if ( data == 0 && len != 0 ) {
#if defined(QT_CHECK_NULL) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::writeBlock: Null pointer error" );
#endif
return -1;
}
if ( !isValid() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::writeBlock: Invalid socket" );
#endif
return -1;
}
if ( !isOpen() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::writeBlock: Device is not open" );
#endif
return -1;
}
if ( !isWritable() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::writeBlock: Write operation not permitted" );
#endif
return -1;
}
bool done = false;
qint64 r = 0;
while ( !done ) {
// Don't write more than 64K (see Knowledge Base Q201213).
r = ::send( fd, data, ( len>64*1024 ? 64*1024 : len ), 0 );
done = true;
if ( r == SOCKET_ERROR && e == NoError ) {//&& errno != WSAEAGAIN ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
case WSAEACCES:
case WSAENETRESET:
case WSAESHUTDOWN:
case WSAEHOSTUNREACH:
e = NetworkFailure;
break;
case WSAECONNABORTED:
case WSAECONNRESET:
// connection closed
close();
r = 0;
break;
case WSAEINTR:
done = false;
break;
case WSAEINPROGRESS:
e = NoResources;
// ### perhaps try it later?
break;
case WSAEFAULT:
case WSAEOPNOTSUPP:
e = InternalError;
break;
case WSAENOBUFS:
// ### try later?
break;
case WSAEMSGSIZE:
e = NoResources;
break;
case WSAENOTCONN:
case WSAENOTSOCK:
case WSAEINVAL:
e = Impossible;
break;
case WSAEWOULDBLOCK:
r = 0;
break;
default:
e = UnknownError;
break;
}
}
}
return r;
}
Q_LONG Q3SocketDevice::writeBlock( const char * data, Q_ULONG len,
const QHostAddress & host, quint16 port )
{
if ( t != Datagram ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::sendBlock: Not datagram" );
#endif
return -1; // for now - later we can do t/tcp
}
if ( data == 0 && len != 0 ) {
#if defined(QT_CHECK_NULL) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::sendBlock: Null pointer error" );
#endif
return -1;
}
if ( !isValid() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::sendBlock: Invalid socket" );
#endif
return -1;
}
if ( !isOpen() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::sendBlock: Device is not open" );
#endif
return -1;
}
if ( !isWritable() ) {
#if defined(QT_CHECK_STATE) || defined(QSOCKETDEVICE_DEBUG)
qWarning( "Q3SocketDevice::sendBlock: Write operation not permitted" );
#endif
return -1;
}
struct sockaddr_in a4;
struct sockaddr *aa;
SOCKLEN_T slen;
#if !defined(QT_NO_IPV6)
qt_sockaddr_in6 a6;
if ( initialized >= 0x20 && host.isIPv6Address() ) {
memset( &a6, 0, sizeof(a6) );
a6.sin6_family = AF_INET6;
a6.sin6_port = htons( port );
Q_IPV6ADDR tmp = host.toIPv6Address();
memcpy( &a6.sin6_addr.qt_s6_addr, &tmp, sizeof(tmp) );
slen = sizeof( a6 );
aa = (struct sockaddr *)&a6;
} else
#endif
if ( host.isIPv4Address() ) {
memset( &a4, 0, sizeof(a4) );
a4.sin_family = AF_INET;
a4.sin_port = htons( port );
a4.sin_addr.s_addr = htonl( host.toIPv4Address() );
slen = sizeof(a4);
aa = (struct sockaddr *)&a4;
} else {
e = Impossible;
return -1;
}
// we'd use MSG_DONTWAIT + MSG_NOSIGNAL if Stevens were right.
// but apparently Stevens and most implementors disagree
bool done = false;
qint64 r = 0;
while ( !done ) {
r = ::sendto( fd, data, len, 0, aa, slen );
done = true;
if ( r == SOCKET_ERROR && e == NoError ) {//&& e != EAGAIN ) {
switch( WSAGetLastError() ) {
case WSANOTINITIALISED:
e = Impossible;
break;
case WSAENETDOWN:
case WSAEACCES:
case WSAENETRESET:
case WSAESHUTDOWN:
case WSAEHOSTUNREACH:
case WSAECONNABORTED:
case WSAECONNRESET:
case WSAEADDRNOTAVAIL:
case WSAENETUNREACH:
case WSAETIMEDOUT:
e = NetworkFailure;
break;
case WSAEINTR:
done = false;
break;
case WSAEINPROGRESS:
e = NoResources;
// ### perhaps try it later?
break;
case WSAEFAULT:
case WSAEOPNOTSUPP:
case WSAEAFNOSUPPORT:
e = InternalError;
break;
case WSAENOBUFS:
case WSAEMSGSIZE:
e = NoResources;
break;
case WSAENOTCONN:
case WSAENOTSOCK:
case WSAEINVAL:
case WSAEDESTADDRREQ:
e = Impossible;
break;
case WSAEWOULDBLOCK:
r = 0;
break;
default:
e = UnknownError;
break;
}
}
}
return r;
}
void Q3SocketDevice::fetchConnectionParameters()
{
if ( !isValid() ) {
p = 0;
a = QHostAddress();
pp = 0;
pa = QHostAddress();
return;
}
#if !defined (QT_NO_IPV6)
struct qt_sockaddr_storage sa;
#else
struct sockaddr_in sa;
#endif
memset( &sa, 0, sizeof(sa) );
SOCKLEN_T sz;
sz = sizeof( sa );
if ( !::getsockname( fd, (struct sockaddr *)(&sa), &sz ) )
qt_socket_getportaddr( (struct sockaddr *)(&sa), &p, &a );
pp = 0;
pa = QHostAddress();
}
void Q3SocketDevice::fetchPeerConnectionParameters()
{
// do the getpeername() lazy on Windows (sales/arc-18/37759 claims that
// there will be problems otherwise if you use MS Proxy server)
#if !defined (QT_NO_IPV6)
struct qt_sockaddr_storage sa;
#else
struct sockaddr_in sa;
#endif
memset( &sa, 0, sizeof(sa) );
SOCKLEN_T sz;
sz = sizeof( sa );
if ( !::getpeername( fd, (struct sockaddr *)(&sa), &sz ) )
qt_socket_getportaddr( (struct sockaddr *)(&sa), &pp, &pa );
}
quint16 Q3SocketDevice::peerPort() const
{
if ( pp==0 && isValid() ) {
Q3SocketDevice *that = (Q3SocketDevice*)this; // mutable
that->fetchPeerConnectionParameters();
}
return pp;
}
QHostAddress Q3SocketDevice::peerAddress() const
{
if ( pp==0 && isValid() ) {
Q3SocketDevice *that = (Q3SocketDevice*)this; // mutable
that->fetchPeerConnectionParameters();
}
return pa;
}
QT_END_NAMESPACE
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