FS-11409: add "ice-lite" SDP attribute

src/switch_core_media.c

@@ -10580,6 +10580,9 @@ SWITCH_DECLARE(void) switch_core_media_gen_local_sdp(switch_core_session_t *sess
 			}
 
 			switch_snprintf(buf + strlen(buf), SDPBUFLEN - strlen(buf), "a=end-of-candidates\r\n");
+			if (switch_true(switch_channel_get_variable(session->channel, "ice_lite"))) {
+				switch_snprintf(buf + strlen(buf), SDPBUFLEN - strlen(buf), "a=ice-lite\r\n");
+			}
 
 			switch_snprintf(buf + strlen(buf), SDPBUFLEN - strlen(buf), "a=ssrc:%u cname:%s\r\n", a_engine->ssrc, smh->cname);
 			switch_snprintf(buf + strlen(buf), SDPBUFLEN - strlen(buf), "a=ssrc:%u msid:%s a0\r\n", a_engine->ssrc, smh->msid);