apply patch from lele for proxy mode+sip to not kill T38

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10111 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -651,6 +651,13 @@ static switch_status_t sofia_read_frame(switch_core_session_t *session, switch_f
 				return status;
 			}
 
+			/* Fast PASS! */
+			if (switch_test_flag((&tech_pvt->read_frame), SFF_PROXY_PACKET)) {
+				switch_clear_flag_locked(tech_pvt, TFLAG_READING);
+				*frame = &tech_pvt->read_frame;
+				return SWITCH_STATUS_SUCCESS;
+			}
+
 			payload = tech_pvt->read_frame.payload;
 
 			if (switch_rtp_has_dtmf(tech_pvt->rtp_session)) {

src/switch_rtp.c

@@ -1308,6 +1308,13 @@ static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_
 			}
 		}
 
+		if (bytes && switch_test_flag(rtp_session, SWITCH_RTP_FLAG_PROXY_MEDIA)) {
+			/* Fast PASS! */
+			*flags |= SFF_PROXY_PACKET;
+			ret = (int) bytes;
+			goto end;
+		}
+
 		if (bytes) {
 			rtp_session->missed_count = 0;
 
@@ -1321,13 +1328,6 @@ static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_
 			}
 		}
 
-		if (bytes && switch_test_flag(rtp_session, SWITCH_RTP_FLAG_PROXY_MEDIA)) {
-			/* Fast PASS! */
-			*flags |= SFF_PROXY_PACKET;
-			ret = (int) bytes;
-			goto end;
-		}
-
 		if (!bytes && (io_flags & SWITCH_IO_FLAG_NOBLOCK)) {
 			return_cng_frame();
 		}