secur32: Use blocking mode for DTLS sessions.

dlls/secur32/schannel.c

@@ -879,11 +879,6 @@ static inline SIZE_T read_record_size(const BYTE *buf, SIZE_T header_size)
     return (buf[header_size - 2] << 8) | buf[header_size - 1];
 }
 
-static inline BOOL is_dtls_context(const struct schan_context *ctx)
-{
-    return (ctx->header_size == HEADER_SIZE_DTLS);
-}
-
 /***********************************************************************
  *              InitializeSecurityContextW
  */
@@ -1011,7 +1006,7 @@ static SECURITY_STATUS SEC_ENTRY schan_InitializeSecurityContextW(
                 return SEC_E_INCOMPLETE_MESSAGE;
             }
         }
-        else if (!is_dtls_context(ctx)) return SEC_E_INCOMPLETE_MESSAGE;
+        else return SEC_E_INCOMPLETE_MESSAGE;
 
         TRACE("Using expected_size %lu.\n", expected_size);
     }

dlls/secur32/schannel_gnutls.c

@@ -292,10 +292,6 @@ static DWORD CDECL schan_get_enabled_protocols(void)
 
 static int pull_timeout(gnutls_transport_ptr_t transport, unsigned int timeout)
 {
-    struct schan_transport *t = (struct schan_transport *)transport;
-    SIZE_T count = 0;
-
-    if (callbacks->get_buffer(t, &t->in, &count)) return 1;
     return 0;
 }
 
@@ -309,7 +305,7 @@ static BOOL CDECL schan_create_session(schan_session *session, schan_credentials
 
     if (cred->enabled_protocols & (SP_PROT_DTLS1_0_CLIENT | SP_PROT_DTLS1_2_CLIENT))
     {
-        flags |= GNUTLS_DATAGRAM | GNUTLS_NONBLOCK;
+        flags |= GNUTLS_DATAGRAM;
     }
 
     err = pgnutls_init(s, flags);