fix channel trace for small body

src/channel.c

@@ -560,11 +560,11 @@ static int belle_sip_channel_process_read_data(belle_sip_channel_t *obj){
 	}
 	if (num>0){
 		char *begin=obj->input_stream.write_ptr;
-		char *logbuf=make_logbuf(BELLE_SIP_LOG_MESSAGE,begin,num);
 		obj->input_stream.write_ptr+=num;
 		/*first null terminate the read buff*/
 		*obj->input_stream.write_ptr='\0';
-		if (num>20) /*to avoid tracing server based keep alives*/
+		if (num>20 || obj->input_stream.state != WAITING_MESSAGE_START ) /*to avoid tracing server based keep alives*/ {
+			char *logbuf = make_logbuf(BELLE_SIP_LOG_MESSAGE,begin,num);
 			belle_sip_message("channel [%p]: received [%i] new bytes from [%s://%s:%i]:\n%s",
 					obj,
 					num,
@@ -572,7 +572,8 @@ static int belle_sip_channel_process_read_data(belle_sip_channel_t *obj){
 					obj->peer_name,
 					obj->peer_port,
 					logbuf);
-		belle_sip_free(logbuf);
+			belle_sip_free(logbuf);
+		}
 		belle_sip_channel_process_stream(obj,FALSE);
 	} else if (num == 0) {
 		/*before closing the channel, check if there was a pending message to receive, whose body acquisition is to be finished.*/

tester/belle_sdp_tester.c

@@ -67,6 +67,13 @@ static void test_attribute_2(void) {
 	BC_ASSERT_STRING_EQUAL(belle_sdp_attribute_get_value(lAttribute), "31ec21eb38b2ec6d36e8dc7b");
 	BC_ASSERT_TRUE(belle_sdp_attribute_has_value(lAttribute));
 	belle_sip_object_unref(BELLE_SIP_OBJECT(lAttribute));
+
+	lAttribute = attribute_parse_marshall_parse_clone("a=alt:1 1 : e2br+9PL Eu1qGlQ9 10.211.55.3 8988");
+	BC_ASSERT_STRING_EQUAL(belle_sdp_attribute_get_name(lAttribute), "alt");
+	BC_ASSERT_STRING_EQUAL(belle_sdp_attribute_get_value(lAttribute), "1 1 : e2br+9PL Eu1qGlQ9 10.211.55.3 8988");
+	BC_ASSERT_TRUE(belle_sdp_attribute_has_value(lAttribute));
+	belle_sip_object_unref(BELLE_SIP_OBJECT(lAttribute));
+
 }
 
 static void test_rtcp_fb_attribute(void) {
@@ -384,6 +391,7 @@ static void test_simple_session_description(void) {
 						"c=IN IP4 192.168.0.18\r\n"\
 						"t=0 0\r\n"\
 						"m=audio 7078 RTP/AVP 111 110 3 0 8 101\r\n"\
+						"a=alt:1 1 : e2br+9PL Eu1qGlQ9 10.211.55.3 8988\r\n"\
 						"a=rtpmap:111 speex/16000\r\n"\
 						"a=fmtp:111 vbr=on\r\n"\
 						"a=rtpmap:110 speex/8000\r\n"\