Fixing lingering bytes clipping issue on socket shutdown.

For more information, see comments on
https://msdn.microsoft.com/en-us/library/windows/desktop/ms738547(v=vs.85).aspx
pull/3249/head
Nicolas Noble 10 years ago
parent bda7b617c9
commit 77ccdb99f8
  1. 22
      src/core/iomgr/socket_windows.c

@ -35,8 +35,12 @@
#ifdef GPR_WINSOCK_SOCKET
#include <winsock2.h>
#include <mswsock.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/log_win32.h>
#include <grpc/support/string_util.h>
#include "src/core/iomgr/iocp_windows.h"
@ -63,6 +67,24 @@ grpc_winsocket *grpc_winsocket_create(SOCKET socket, const char *name) {
various callsites of that function, which happens to be in various
mutex hold states, and that'd be unsafe to call them directly. */
void grpc_winsocket_shutdown(grpc_winsocket *winsocket) {
/* Grab the function pointer for DisconnectEx for that specific socket.
It may change depending on the interface. */
int status;
GUID guid = WSAID_DISCONNECTEX;
LPFN_DISCONNECTEX DisconnectEx;
DWORD ioctl_num_bytes;
status = WSAIoctl(winsocket->socket, SIO_GET_EXTENSION_FUNCTION_POINTER,
&guid, sizeof(guid), &DisconnectEx, sizeof(DisconnectEx),
&ioctl_num_bytes, NULL, NULL);
if (status == 0) {
DisconnectEx(winsocket->socket, NULL, 0, 0);
} else {
char *utf8_message = gpr_format_message(WSAGetLastError());
gpr_log(GPR_ERROR, "Unable to retrieve DisconnectEx pointer : %s", utf8_message);
gpr_free(utf8_message);
}
closesocket(winsocket->socket);
}

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