KSocketAddress KSocketDevice::peerAddress() const
{
if (m_sockfd == -1)
return KSocketAddress(); // not open, empty value
if (d->peer.family() != AF_UNSPEC)
return d->peer;
socklen_t len;
KSocketAddress peerAddress;
peerAddress.setLength(len = 32); // arbitrary value
if (kde_getpeername(m_sockfd, peerAddress.address(), &len) == -1)
// error!
return d->peer = KSocketAddress();
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
len = peerAddress.address()->sa_len;
#endif
if (len <= peerAddress.length())
{
// it has fit already
peerAddress.setLength(len);
return d->peer = peerAddress;
}
// no, the socket address is actually larger than we had anticipated
// call again
peerAddress.setLength(len);
if (kde_getpeername(m_sockfd, peerAddress.address(), &len) == -1)
// error!
return d->peer = KSocketAddress();
return d->peer = peerAddress;
}
bool KSocketDevice::disconnect()
{
resetError();
if (m_sockfd == -1)
return false; // can't create
KSocketAddress address;
address.setFamily(AF_UNSPEC);
if (kde_connect(m_sockfd, address.address(), address.length()) == -1)
{
if (errno == EALREADY || errno == EINPROGRESS)
{
setError(IO_ConnectError, InProgress);
return false;
}
else if (errno == ECONNREFUSED)
setError(IO_ConnectError, ConnectionRefused);
else if (errno == ENETDOWN || errno == ENETUNREACH ||
errno == ENETRESET || errno == ECONNABORTED ||
errno == ECONNRESET || errno == EHOSTDOWN ||
errno == EHOSTUNREACH)
setError(IO_ConnectError, NetFailure);
else
setError(IO_ConnectError, NotSupported);
return false;
}
setFlags(IO_Sequential | IO_Raw | IO_ReadWrite);
setState(IO_Open);
return true; // all is well
}
Q_LONG KSocketDevice::writeBlock(const char *data, Q_ULONG len, const KSocketAddress& to)
{
resetError();
if (m_sockfd == -1)
return -1; // can't write to unopen socket
if (data == 0L || len == 0)
return 0; // nothing to be written
ssize_t retval = ::sendto(m_sockfd, data, len, 0, to.address(), to.length());
if (retval == -1)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
setError(IO_WriteError, WouldBlock);
else
setError(IO_WriteError, UnknownError);
return -1; // nothing written
}
else if (retval == 0)
setError(IO_WriteError, RemotelyDisconnected);
return retval;
}