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freeswitch/libs/xmlrpc-c/lib/abyss/src/socket_win.c
Anthony Minessale b66e1bad4c fix xml_rpc socket shutdown 
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9796 d0543943-73ff-0310-b7d9-9358b9ac24b2
2008-10-02 18:50:09 +00:00

947 lines
27 KiB
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/*=============================================================================
socket_win.c
===============================================================================
This is the implementation of TChanSwitch and TChannel
for a Winsock socket.
=============================================================================*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <winsock.h>
#include <errno.h>
#include "xmlrpc_config.h"
#include "xmlrpc-c/util_int.h"
#include "xmlrpc-c/string_int.h"
#include "mallocvar.h"
#include "trace.h"
#include "chanswitch.h"
#include "channel.h"
#include "socket.h"
#include "xmlrpc-c/abyss.h"
#include "socket_win.h"
#ifndef socklen_t
typedef int socklen_t;
#endif
/* =============================================================
Provided nice error strings, NOT available in system errors.
============================================================= */
typedef struct tagSOCKERRS {
int err; // WSAGetLastError() value
char * desc; // description of error
} SOCKERR;
/* could/should perhaps be by the actual call,
but for now, just one big list, with some repeats
*/
SOCKERR sSockErr[] = {
{ WSANOTINITIALISED,
"WSANOTINITIALISED - "
"WSAStartup must be called before using this function." },
{ WSAENETDOWN,
"WSAENETDOWN - "
"The network subsystem has failed." },
{ WSAEACCES,
"WSAEACCES - "
"Attempt to connect datagram socket to broadcast address failed "
"because setsockopt option SO_BROADCAST is not enabled." },
{ WSAEADDRINUSE,
"WSAEADDRINUSE - "
"A process on the computer is already bound to the same fully-qualified "
"address and the socket has not been marked to allow address reuse with "
"SO_REUSEADDR. For example, the IP address and port are bound in the "
"af_inet case). (See the SO_REUSEADDR socket option under setsockopt.)" },
{ WSAEADDRNOTAVAIL,
"WSAEADDRNOTAVAIL - "
"The specified address is not a valid address for this computer." },
{ WSAEFAULT,
"WSAEFAULT - "
"The name or namelen parameter is not a valid part of the user "
"address space, the namelen parameter is too small, the name parameter "
"contains an incorrect address format for the associated "
"address family, or the first two bytes of the memory block "
"specified by name does not match the address family associated with "
"the socket descriptor s." },
{ WSAEINPROGRESS,
"WSAEINPROGRESS - "
"A blocking Windows Sockets 1.1 call is in progress, or the "
"service provider is still processing a callback function." },
{ WSAEINVAL,
"WSAEINVAL - "
"The socket is already bound to an address." },
{ WSAENOBUFS,
"WSAENOBUFS - "
"Not enough buffers available, too many connections." },
{ WSAENOTSOCK,
"WSAENOTSOCK - "
"The descriptor is not a socket." },
// setsocketopt
{ WSAENETRESET,
"WSAENETRESET - "
"Connection has timed out when SO_KEEPALIVE is set." },
{ WSAENOPROTOOPT,
"WSAENOPROTOOPT - "
"The option is unknown or the specified provider "
"or socket is not capable of implementing it "
"(see SO_GROUP_PRIORITY limitations)." },
{ WSAENOTCONN,
"WSAENOTCONN - "
"Connection has been reset when SO_KEEPALIVE is set." },
// WSAStartup
{ WSASYSNOTREADY,
"WSASYSNOTREADY - "
"The underlying network subsystem is not ready for "
"network communication." },
{ WSAVERNOTSUPPORTED,
"WSAVERNOTSUPPORTED - "
"The version of Windows Sockets function requested is not provided "
"by this particular Windows Sockets implementation." },
{ WSAEINPROGRESS,
"WSAEINPROGRESS - "
"A blocking Windows Sockets 1.1 operation is in progress." },
{ WSAEPROCLIM,
"WSAEPROCLIM - "
"Limit on the number of tasks allowed by the Windows Sockets "
"implementation has been reached." },
{ WSAEFAULT,
"WSAEFAULT - "
"The lpWSAData is not a valid pointer." },
// listen
{ WSANOTINITIALISED,
"WSANOTINITIALISED - "
"A successful WSAStartup call must occur before using this function." },
{ WSAENETDOWN,
"WSAENETDOWN - "
"The network subsystem has failed." },
{ WSAEADDRINUSE,
"WSAEADDRINUSE - "
"The socket's local address is already in use and the socket "
"was not marked to allow address reuse with SO_REUSEADDR. "
"This error usually occurs during execution of the bind function, "
"but could be delayed until this function if the bind was to "
"a partially wildcard address (involving ADDR_ANY) "
"and if a specific address needs to be committed at the time "
"of this function call." },
{ WSAEINPROGRESS,
"WSAEINPROGRESS - "
"A blocking Windows Sockets 1.1 call is in progress, "
"or the service provider is still processing a callback function." },
{ WSAEINVAL,
"WSAEINVAL - "
"The socket has not been bound with bind." },
{ WSAEISCONN,
"WSAEISCONN - "
"The socket is already connected." },
{ WSAEMFILE,
"WSAEMFILE - "
"No more socket descriptors are available." },
{ WSAENOBUFS,
"WSAENOBUFS - "
"No buffer space is available." },
{ WSAENOTSOCK,
"WSAENOTSOCK - "
"The descriptor is not a socket." },
{ WSAEOPNOTSUPP,
"WSAEOPNOTSUPP - "
"The referenced socket is not of a type that has a listen operation." },
// getpeername
{ WSANOTINITIALISED,
"WSANOTINITIALISED - "
"A successful WSAStartup call must occur before using this function." },
{ WSAENETDOWN,
"WSAENETDOWN - "
"The network subsystem has failed." },
{ WSAEFAULT,
"WSAEFAULT - "
"The name or the namelen parameter is not a valid part of the "
"user address space, or the namelen parameter is too small." },
{ WSAEINPROGRESS,
"WSAEINPROGRESS - "
"A blocking Windows Sockets 1.1 call is in progress, "
"or the service provider is still processing a callback function." },
{ WSAENOTCONN,
"WSAENOTCONN - "
"The socket is not connected." },
{ WSAENOTSOCK,
"WSAENOTSOCK - "
"The descriptor is not a socket." },
// accept
{ WSANOTINITIALISED,
"WSANOTINITIALISED - "
"A successful WSAStartup call must occur before using this function." },
{ WSAENETDOWN,
"WSAENETDOWN - "
"The network subsystem has failed." },
{ WSAEFAULT,
"WSAEFAULT - "
"The addrlen parameter is too small or addr is not a valid part "
"of the user address space." },
{ WSAEINTR,
"WSAEINTR - "
"A blocking Windows Sockets 1.1 call was canceled through "
"WSACancelBlockingCall." },
{ WSAEINPROGRESS,
"WSAEINPROGRESS - "
"A blocking Windows Sockets 1.1 call is in progress, "
"or the service provider is still processing a callback function." },
{ WSAEINVAL,
"WSAEINVAL - "
"The listen function was not invoked prior to accept." },
{ WSAEMFILE,
"WSAEMFILE - "
"The queue is nonempty upon entry to accept and "
"there are no descriptors available." },
{ WSAENOBUFS,
"WSAENOBUFS - "
"No buffer space is available." },
{ WSAENOTSOCK,
"WSAENOTSOCK - "
"The descriptor is not a socket." },
{ WSAEOPNOTSUPP,
"WSAEOPNOTSUPP - "
"The referenced socket is not a type that offers connection-oriented "
"service." },
{ WSAEWOULDBLOCK,
"WSAEWOULDBLOCK - "
"The socket is marked as nonblocking and no connections are present "
"to be accepted." },
/* must be last entry */
{ 0, 0 }
};
static const char *
getWSAError(int const wsaErrno) {
SOCKERR * pseP;
pseP = &sSockErr[0]; // initial value
while (pseP->desc) {
if (pseP->err == wsaErrno)
return pseP->desc;
++pseP;
}
return "(no description available)";
}
struct socketWin {
/*----------------------------------------------------------------------------
The properties/state of a TSocket unique to a Unix TSocket.
-----------------------------------------------------------------------------*/
SOCKET winsock;
bool userSuppliedWinsock;
/* 'socket' was supplied by the user; it belongs to him */
};
static
bool
connected(SOCKET const fd) {
/*----------------------------------------------------------------------------
Return TRUE iff the socket on file descriptor 'fd' is in the connected
state.
If 'fd' does not identify a stream socket or we are unable to determine
the state of the stream socket, the answer is "false".
-----------------------------------------------------------------------------*/
bool connected;
struct sockaddr sockaddr;
socklen_t nameLen;
int rc;
nameLen = sizeof(sockaddr);
rc = getpeername(fd, &sockaddr, &nameLen);
if (rc == 0)
connected = TRUE;
else
connected = FALSE;
return connected;
}
void
SocketWinInit(const char ** const errorP) {
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD(1, 0);
err = WSAStartup(wVersionRequested, &wsaData);
if (err != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "WSAStartup() faild with error %d (%s)",
lastError, getWSAError(lastError));
} else
*errorP = NULL;
}
void
SocketWinTerm(void) {
WSACleanup();
}
/*=============================================================================
TChannel
=============================================================================*/
static ChannelDestroyImpl channelDestroy;
static void
channelDestroy(TChannel * const channelP) {
struct socketWin * const socketWinP = channelP->implP;
if (!socketWinP->userSuppliedWinsock)
closesocket(socketWinP->winsock);
free(socketWinP);
}
static ChannelWriteImpl channelWrite;
static void
channelWrite(TChannel * const channelP,
const unsigned char * const buffer,
uint32_t const len,
bool * const failedP) {
struct socketWin * const socketWinP = channelP->implP;
size_t bytesLeft;
bool error;
assert(sizeof(size_t) >= sizeof(len));
for (bytesLeft = len, error = FALSE;
bytesLeft > 0 && !error;
) {
size_t const maxSend = (size_t)(-1) >> 1;
int rc;
rc = send(socketWinP->winsock, &buffer[len-bytesLeft],
MIN(maxSend, bytesLeft), 0);
if (rc <= 0)
/* 0 means connection closed; < 0 means severe error */
error = TRUE;
else
bytesLeft -= rc;
}
*failedP = error;
}
static ChannelReadImpl channelRead;
static void
channelRead(TChannel * const channelP,
unsigned char * const buffer,
uint32_t const bufferSize,
uint32_t * const bytesReceivedP,
bool * const failedP) {
struct socketWin * const socketWinP = channelP->implP;
int rc;
rc = recv(socketWinP->winsock, buffer, bufferSize, 0);
if (rc < 0) {
*failedP = TRUE;
} else {
*failedP = FALSE;
*bytesReceivedP = rc;
}
}
static ChannelWaitImpl channelWait;
static void
channelWait(TChannel * const channelP,
bool const waitForRead,
bool const waitForWrite,
uint32_t const timems,
bool * const readyToReadP,
bool * const readyToWriteP,
bool * const failedP) {
struct socketWin * const socketWinP = channelP->implP;
fd_set rfds, wfds;
TIMEVAL tv;
bool failed, readRdy, writeRdy, timedOut;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
if (waitForRead)
FD_SET(socketWinP->winsock, &rfds);
if (waitForWrite)
FD_SET(socketWinP->winsock, &wfds);
tv.tv_sec = timems / 1000;
tv.tv_usec = timems % 1000;
for (failed = FALSE, readRdy = FALSE, writeRdy = FALSE, timedOut = FALSE;
!failed && !readRdy && !writeRdy && !timedOut;
) {
int rc;
rc = select(socketWinP->winsock + 1, &rfds, &wfds, NULL,
(timems == TIME_INFINITE ? NULL : &tv));
switch(rc) {
case 0:
timedOut = TRUE;
break;
case -1: /* socket error */
if (errno != EINTR)
failed = TRUE;
break;
default:
if (FD_ISSET(socketWinP->winsock, &rfds))
readRdy = TRUE;
if (FD_ISSET(socketWinP->winsock, &wfds))
writeRdy = TRUE;
}
}
if (failedP)
*failedP = failed;
if (readyToReadP)
*readyToReadP = readRdy;
if (readyToWriteP)
*readyToWriteP = writeRdy;
}
static ChannelInterruptImpl channelInterrupt;
static void
channelInterrupt(TChannel * const channelP) {
/*----------------------------------------------------------------------------
Interrupt any waiting that a thread might be doing in channelWait()
now or in the future.
Actually, this is just a no-op because we don't yet know how to
accomplish that.
-----------------------------------------------------------------------------*/
}
void
ChannelWinGetPeerName(TChannel * const channelP,
struct sockaddr_in * const inAddrP,
const char ** const errorP) {
struct socketWin * const socketWinP = channelP->implP;
socklen_t addrlen;
int rc;
struct sockaddr sockAddr;
addrlen = sizeof(sockAddr);
rc = getpeername(socketWinP->winsock, &sockAddr, &addrlen);
if (rc != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "getpeername() failed. WSAERROR = %d (%s)",
lastError, getWSAError(lastError));
} else {
if (addrlen != sizeof(sockAddr))
xmlrpc_asprintf(errorP, "getpeername() returned a socket address "
"of the wrong size: %u. Expected %u",
addrlen, sizeof(sockAddr));
else {
if (sockAddr.sa_family != AF_INET)
xmlrpc_asprintf(errorP,
"Socket does not use the Inet (IP) address "
"family. Instead it uses family %d",
sockAddr.sa_family);
else {
*inAddrP = *(struct sockaddr_in *)&sockAddr;
*errorP = NULL;
}
}
}
}
static ChannelFormatPeerInfoImpl channelFormatPeerInfo;
static void
channelFormatPeerInfo(TChannel * const channelP,
const char ** const peerStringP) {
struct socketWin * const socketWinP = channelP->implP;
struct sockaddr sockaddr;
socklen_t sockaddrLen;
int rc;
sockaddrLen = sizeof(sockaddr);
rc = getpeername(socketWinP->winsock, &sockaddr, &sockaddrLen);
if (rc != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(peerStringP, "?? getpeername() failed. "
"WSAERROR %d (%s)",
lastError, getWSAError(lastError));
} else {
switch (sockaddr.sa_family) {
case AF_INET: {
struct sockaddr_in * const sockaddrInP =
(struct sockaddr_in *) &sockaddr;
if (sockaddrLen < sizeof(*sockaddrInP))
xmlrpc_asprintf(peerStringP, "??? getpeername() returned "
"the wrong size");
else {
unsigned char * const ipaddr = (unsigned char *)
&sockaddrInP->sin_addr.s_addr;
xmlrpc_asprintf(peerStringP, "%u.%u.%u.%u:%hu",
ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3],
sockaddrInP->sin_port);
}
} break;
default:
xmlrpc_asprintf(peerStringP, "??? AF=%u", sockaddr.sa_family);
}
}
}
static struct TChannelVtbl const channelVtbl = {
&channelDestroy,
&channelWrite,
&channelRead,
&channelWait,
&channelInterrupt,
&channelFormatPeerInfo,
};
static void
makeChannelFromWinsock(SOCKET const winsock,
TChannel ** const channelPP,
const char ** const errorP) {
struct socketWin * socketWinP;
MALLOCVAR(socketWinP);
if (socketWinP == NULL)
xmlrpc_asprintf(errorP, "Unable to allocate memory for Windows "
"socket descriptor");
else {
TChannel * channelP;
socketWinP->winsock = winsock;
socketWinP->userSuppliedWinsock = TRUE;
ChannelCreate(&channelVtbl, socketWinP, &channelP);
if (channelP == NULL)
xmlrpc_asprintf(errorP, "Unable to allocate memory for "
"channel descriptor.");
else {
*channelPP = channelP;
*errorP = NULL;
}
if (*errorP)
free(socketWinP);
}
}
static void
makeChannelInfo(struct abyss_win_chaninfo ** const channelInfoPP,
struct sockaddr const peerAddr,
socklen_t const peerAddrLen,
const char ** const errorP) {
struct abyss_win_chaninfo * channelInfoP;
MALLOCVAR(channelInfoP);
if (channelInfoP == NULL)
xmlrpc_asprintf(errorP, "Unable to allocate memory");
else {
channelInfoP->peerAddrLen = peerAddrLen;
channelInfoP->peerAddr = peerAddr;
*channelInfoPP = channelInfoP;
*errorP = NULL;
}
}
void
ChannelWinCreateWinsock(SOCKET const fd,
TChannel ** const channelPP,
struct abyss_win_chaninfo ** const channelInfoPP,
const char ** const errorP) {
struct sockaddr peerAddr;
socklen_t peerAddrLen;
int rc;
peerAddrLen = sizeof(peerAddrLen);
rc = getpeername(fd, &peerAddr, &peerAddrLen);
if (rc != 0) {
int const lastError = WSAGetLastError();
if (lastError == WSAENOTCONN) {
/* NOTE: This specific string 'not in connected' is
required by one of the rpctest suite items, in abyss.c
(line 186), hence the separation of the error messages
in this case ...
*/
xmlrpc_asprintf(errorP, "Socket on file descriptor %d "
"is not in connected state. WSAERROR = %d (%s)",
fd, lastError, getWSAError(lastError));
} else
xmlrpc_asprintf(errorP, "getpeername() failed. WSAERROR = %d (%s)",
lastError, getWSAError(lastError));
} else {
makeChannelInfo(channelInfoPP, peerAddr, peerAddrLen, errorP);
if (!*errorP) {
makeChannelFromWinsock(fd, channelPP, errorP);
if (*errorP)
free(*channelInfoPP);
}
}
}
/*=============================================================================
TChanSwitch
=============================================================================*/
static SwitchDestroyImpl chanSwitchDestroy;
void
chanSwitchDestroy(TChanSwitch * const chanSwitchP) {
struct socketWin * const socketWinP = chanSwitchP->implP;
if (!socketWinP->userSuppliedWinsock)
closesocket(socketWinP->winsock);
free(socketWinP);
}
static SwitchListenImpl chanSwitchListen;
static void
chanSwitchListen(TChanSwitch * const chanSwitchP,
uint32_t const backlog,
const char ** const errorP) {
struct socketWin * const socketWinP = chanSwitchP->implP;
int32_t const minus1 = -1;
int rc;
/* Disable the Nagle algorithm to make persistant connections faster */
setsockopt(socketWinP->winsock, IPPROTO_TCP, TCP_NODELAY,
(const char *)&minus1, sizeof(minus1));
rc = listen(socketWinP->winsock, backlog);
if (rc != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "setsockopt() failed with WSAERROR %d (%s)",
lastError, getWSAError(lastError));
} else
*errorP = NULL;
}
static SwitchAcceptImpl chanSwitchAccept;
static void
chanSwitchAccept(TChanSwitch * const chanSwitchP,
TChannel ** const channelPP,
void ** const channelInfoPP,
const char ** const errorP) {
/*----------------------------------------------------------------------------
Accept a connection via the channel switch *chanSwitchP. Return as
*channelPP the channel for the accepted connection.
If no connection is waiting at *chanSwitchP, wait until one is.
If we receive a signal while waiting, return immediately with
*channelPP == NULL.
-----------------------------------------------------------------------------*/
struct socketWin * const listenSocketP = chanSwitchP->implP;
bool interrupted;
TChannel * channelP;
interrupted = FALSE; /* Haven't been interrupted yet */
channelP = NULL; /* No connection yet */
*errorP = NULL; /* No error yet */
while (!channelP && !*errorP && !interrupted) {
struct sockaddr peerAddr;
socklen_t size = sizeof(peerAddr);
int rc;
rc = accept(listenSocketP->winsock, &peerAddr, &size);
if (rc >= 0) {
int const acceptedWinsock = rc;
struct socketWin * acceptedSocketP;
MALLOCVAR(acceptedSocketP);
if (!acceptedSocketP)
xmlrpc_asprintf(errorP, "Unable to allocate memory");
else {
acceptedSocketP->winsock = acceptedWinsock;
acceptedSocketP->userSuppliedWinsock = FALSE;
*channelInfoPP = NULL;
ChannelCreate(&channelVtbl, acceptedSocketP, &channelP);
if (!channelP)
xmlrpc_asprintf(errorP,
"Failed to create TChannel object.");
else
*errorP = NULL;
if (*errorP)
free(acceptedSocketP);
}
if (*errorP)
closesocket(acceptedWinsock);
} else if (errno == EINTR)
interrupted = TRUE;
else
xmlrpc_asprintf(errorP, "accept() failed, errno = %d (%s)",
errno, strerror(errno));
}
*channelPP = channelP;
}
static SwitchInterruptImpl chanSwitchInterrupt;
static void
chanSwitchInterrupt(TChanSwitch * const chanSwitchP) {
/*----------------------------------------------------------------------------
Interrupt any waiting that a thread might be doing in chanSwitchAccept()
now or in the future.
Actually, this is just a no-op because we don't yet know how to
accomplish that.
-----------------------------------------------------------------------------*/
struct socketWin * const socketWinP = chanSwitchP->implP;
if (!socketWinP->userSuppliedWinsock)
closesocket(socketWinP->winsock);
}
static struct TChanSwitchVtbl const chanSwitchVtbl = {
&chanSwitchDestroy,
&chanSwitchListen,
&chanSwitchAccept,
&chanSwitchInterrupt,
};
static void
setSocketOptions(SOCKET const fd,
const char ** const errorP) {
int32_t const n = 1;
int rc;
rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&n, sizeof(n));
if (rc != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "Failed to set socket options. "
"setsockopt() failed with WSAERROR %d (%s)",
lastError, getWSAError(lastError));
} else
*errorP = NULL;
}
void
bindSocketToPort(SOCKET const winsock,
struct in_addr * const addrP,
uint16_t const portNumber,
const char ** const errorP) {
struct sockaddr_in name;
int rc;
int one = 1;
ZeroMemory(&name, sizeof(name));
name.sin_family = AF_INET;
name.sin_port = htons(portNumber);
if (addrP)
name.sin_addr = *addrP;
setsockopt(winsock, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(int));
rc = bind(winsock, (struct sockaddr *)&name, sizeof(name));
if (rc != 0) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "Unable to bind socket to port number %u. "
"bind() failed with WSAERROR %i (%s)",
portNumber, lastError, getWSAError(lastError));
} else
*errorP = NULL;
}
void
ChanSwitchWinCreate(uint16_t const portNumber,
TChanSwitch ** const chanSwitchPP,
const char ** const errorP) {
/*----------------------------------------------------------------------------
Create a Winsock-based channel switch.
Set the socket's local address so that a subsequent "listen" will listen
on all IP addresses, port number 'portNumber'.
-----------------------------------------------------------------------------*/
struct socketWin * socketWinP;
MALLOCVAR(socketWinP);
if (!socketWinP)
xmlrpc_asprintf(errorP, "Unable to allocate memory for Windows socket "
"descriptor structure.");
else {
SOCKET winsock;
winsock = socket(AF_INET, SOCK_STREAM, 0);
if (winsock == 0 || winsock == INVALID_SOCKET) {
int const lastError = WSAGetLastError();
xmlrpc_asprintf(errorP, "socket() failed with WSAERROR %d (%s)",
lastError, getWSAError(lastError));
} else {
socketWinP->winsock = winsock;
socketWinP->userSuppliedWinsock = FALSE;
setSocketOptions(socketWinP->winsock, errorP);
if (!*errorP) {
bindSocketToPort(socketWinP->winsock, NULL, portNumber,
errorP);
if (!*errorP)
ChanSwitchCreate(&chanSwitchVtbl, socketWinP,
chanSwitchPP);
}
if (*errorP)
closesocket(winsock);
}
if (*errorP)
free(socketWinP);
}
}
void
ChanSwitchWinCreateWinsock(SOCKET const winsock,
TChanSwitch ** const chanSwitchPP,
const char ** const errorP) {
struct socketWin * socketWinP;
if (connected(winsock))
xmlrpc_asprintf(errorP, "Socket is in connected state.");
else {
MALLOCVAR(socketWinP);
if (socketWinP == NULL)
xmlrpc_asprintf(errorP, "unable to allocate memory for Windows "
"socket descriptor.");
else {
TChanSwitch * chanSwitchP;
socketWinP->winsock = winsock;
socketWinP->userSuppliedWinsock = TRUE;
ChanSwitchCreate(&chanSwitchVtbl, socketWinP, &chanSwitchP);
if (chanSwitchP == NULL)
xmlrpc_asprintf(errorP, "Unable to allocate memory for "
"channel switch descriptor");
else {
*chanSwitchPP = chanSwitchP;
*errorP = NULL;
}
if (*errorP)
free(socketWinP);
}
}
}
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