From: Anthony Minessale <anthm@freeswitch.org>
Date: Tue, 19 Apr 2011 15:09:55 +0000 (-0500)
Subject: FS-3213 please try this patch
X-Git-Tag: v1.2-rc1~118^2~103^2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c8a257dde232ff3f26cb4c514c2f918e09e5bfc8;p=thirdparty%2Ffreeswitch.git

FS-3213 please try this patch
---

diff --git a/src/mod/applications/mod_spandsp/mod_spandsp_fax.c b/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
index 4dd936b8c6..b43dd05599 100644
--- a/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
+++ b/src/mod/applications/mod_spandsp/mod_spandsp_fax.c
@@ -446,14 +446,15 @@ static int t38_tx_packet_handler(t38_core_state_t *s, void *user_data, const uin
     /* we need to build a real packet here and make write_frame.packet and write_frame.packetlen point to it */
     out_frame.flags = SFF_UDPTL_PACKET | SFF_PROXY_PACKET;
     out_frame.packet = pkt;
-    out_frame.packetlen = udptl_build_packet(pvt->udptl_state, pkt, buf, len);
-    
-    //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "WRITE %d udptl bytes\n", out_frame.packetlen);
-
-    for (x = 0; x < count; x++) {
-        if (switch_core_session_write_frame(session, &out_frame, SWITCH_IO_FLAG_NONE, 0) != SWITCH_STATUS_SUCCESS) {
-            r = -1;
-            break;
+    if ((r = udptl_build_packet(pvt->udptl_state, pkt, buf, len)) > 0) {
+        out_frame.packetlen = r;
+        //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "WRITE %d udptl bytes\n", out_frame.packetlen);
+
+        for (x = 0; x < count; x++) {
+            if (switch_core_session_write_frame(session, &out_frame, SWITCH_IO_FLAG_NONE, 0) != SWITCH_STATUS_SUCCESS) {
+                r = -1;
+                break;
+            }
         }
     }