Function duk_trans_socket_peek_cb

Source/Utils/duk_trans_socket_windows.cpp:337–374

}

duk_size_t duk_trans_socket_peek_cb(void *udata) {
	u_long avail;
	int rc;

	(void) udata;  /* not needed by the example */

#if defined(DEBUG_PRINTS)
	fprintf(stderr, "%s: udata=%p\n", __FUNCTION__, (void *) udata);
	fflush(stderr);
#endif

	if (client_sock == INVALID_SOCKET) {
		return 0;
	}

	avail = 0;
	rc = ioctlsocket(client_sock, FIONREAD, &avail);
	if (rc != 0) {
		fprintf(stderr, "%s: ioctlsocket() returned %d, closing connection\n",
		        __FILE__, rc);
		fflush(stderr);
		goto fail;  /* also returns 0, which is correct */
	} else {
		if (avail == 0) {
			return 0;  /* nothing to read */
		} else {
			return 1;  /* something to read */
		}
	}
	/* never here */

 fail:
	if (client_sock != INVALID_SOCKET) {
		(void) closesocket(client_sock);
		client_sock = INVALID_SOCKET;
	}
	return 0;
}

void duk_trans_socket_read_flush_cb(void *udata) {
	(void) udata;  /* not needed by the example */