FS-6954 Detect when we have T.38 in nomedia or proxy media mode and apply same…

FS-6954 Detect when we have T.38 in nomedia or proxy media mode and apply same fixups as in media mode.

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -696,6 +696,7 @@ switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 	char *record_route = NULL;
 	const char *recover_via = NULL;
 	int require_timer = 1;
+	uint8_t is_t38 = 0;
 
 	if (switch_channel_test_flag(tech_pvt->channel, CF_RECOVERING)) {
 		const char *recover_contact = switch_channel_get_variable(tech_pvt->channel, "sip_recover_contact");
@@ -1235,9 +1236,12 @@ switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 
 
 
-	if (switch_channel_get_private(tech_pvt->channel, "t38_options")) {
+	if ((switch_channel_get_private(tech_pvt->channel, "t38_options")) ||  
+		((sofia_test_flag(tech_pvt, TFLAG_INB_NOMEDIA) || sofia_test_flag(tech_pvt, TFLAG_PROXY_MEDIA)) 
+			&& switch_stristr("m=image", tech_pvt->mparams.local_sdp_str))) {
 		sofia_clear_flag(tech_pvt, TFLAG_ENABLE_SOA);
-	}
+		is_t38 = 1;
+    }
 
 	if (sofia_use_soa(tech_pvt)) {
 		nua_invite(tech_pvt->nh,
@@ -1272,7 +1276,7 @@ switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 				   TAG_IF(!zstr(tech_pvt->mparams.local_sdp_str), SOATAG_ADDRESS(tech_pvt->mparams.adv_sdp_audio_ip)),
 				   TAG_IF(!zstr(tech_pvt->mparams.local_sdp_str), SOATAG_USER_SDP_STR(tech_pvt->mparams.local_sdp_str)),
 				   TAG_IF(!zstr(tech_pvt->mparams.local_sdp_str), SOATAG_REUSE_REJECTED(1)),
-				   TAG_IF(switch_channel_get_private(tech_pvt->channel, "t38_options"), SOATAG_ORDERED_USER(1)),
+				   TAG_IF(is_t38, SOATAG_ORDERED_USER(1)),
 				   TAG_IF(!zstr(tech_pvt->mparams.local_sdp_str), SOATAG_RTP_SORT(SOA_RTP_SORT_REMOTE)),
 				   TAG_IF(!zstr(tech_pvt->mparams.local_sdp_str), SOATAG_RTP_SELECT(SOA_RTP_SELECT_ALL)),
 				   TAG_IF(rep, SIPTAG_REPLACES_STR(rep)),