diff --git a/libs/sofia-sip/.update b/libs/sofia-sip/.update
index 36fa387d65..a528d9c447 100644
--- a/libs/sofia-sip/.update
+++ b/libs/sofia-sip/.update
@@ -1 +1 @@
-Tue Oct  8 12:10:32 CDT 2013
+Fri Oct 18 23:59:59 CDT 2013
diff --git a/libs/sofia-sip/libsofia-sip-ua/tport/ws.c b/libs/sofia-sip/libsofia-sip-ua/tport/ws.c
index a8d056c895..a6b73406e4 100644
--- a/libs/sofia-sip/libsofia-sip-ua/tport/ws.c
+++ b/libs/sofia-sip/libsofia-sip-ua/tport/ws.c
@@ -334,8 +334,7 @@ ssize_t ws_raw_read(wsh_t *wsh, void *data, size_t bytes)
 #else
 		if (x++) Sleep(10);
 #endif
-		} while (r == -1 && (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK || 
-							 errno == 35 || errno == 730035 || errno == 2 || errno == 60) && x < 100);
+	} while (r == -1 && xp_is_blocking(xp_errno()) && x < 100);
 	
 	if (x >= 100) {
 		r = -1;
@@ -364,7 +363,7 @@ ssize_t ws_raw_write(wsh_t *wsh, void *data, size_t bytes)
 
 	do {
 		r = send(wsh->sock, data, bytes, 0);
-	} while (r == -1 && (errno == EAGAIN || errno == EINTR));
+	} while (r == -1 && xp_is_blocking(xp_errno()));
 
 	//if (r<0) {
 		//printf("wRITE FAIL: %s\n", strerror(errno));
@@ -789,4 +788,28 @@ ssize_t ws_write_frame(wsh_t *wsh, ws_opcode_t oc, void *data, size_t bytes)
 	return bytes;
 }
 
+#ifdef _MSC_VER
 
+int xp_errno(void)
+{
+	return WSAGetLastError();
+}
+
+int xp_is_blocking(int errcode)
+{
+	return errcode == WSAEWOULDBLOCK || errcode == WSAEINPROGRESS;
+}
+
+#else
+
+int xp_errno(void)
+{
+	return errno;
+}
+
+int xp_is_blocking(int errcode)
+{
+  return errcode == EAGAIN || errcode == EWOULDBLOCK || errcode == EINPROGRESS || errcode == EINTR;
+}
+
+#endif
\ No newline at end of file
diff --git a/libs/sofia-sip/libsofia-sip-ua/tport/ws.h b/libs/sofia-sip/libsofia-sip-ua/tport/ws.h
index 11e6b93068..8c0a50733e 100644
--- a/libs/sofia-sip/libsofia-sip-ua/tport/ws.h
+++ b/libs/sofia-sip/libsofia-sip-ua/tport/ws.h
@@ -91,6 +91,8 @@ void ws_destroy(wsh_t *wsh);
 void init_ssl(void);
 void deinit_ssl(void);
 
+int xp_errno(void);
+int xp_is_blocking(int errcode);
 
 #ifndef _MSC_VER
 static inline uint64_t get_unaligned_uint64(const void *p)