Fix bogus content-length in t38 sdp. (rizzo, #8600)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@48975 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index d99f82760ba3d997252d4e4ee523e9a80800a65a..7c832841f1600ee199bd8e3b5fd7c3950438adf7 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -6007,8 +6007,9 @@ static int add_t38_sdp(struct sip_request *resp, struct sip_pvt *p)
        ast_build_string(&a_modem_next, &a_modem_left, "a=T38FaxMaxDatagram:%d\r\n",x);
        if (p->t38.jointcapability != T38FAX_UDP_EC_NONE)
                ast_build_string(&a_modem_next, &a_modem_left, "a=T38FaxUdpEC:%s\r\n", (p->t38.jointcapability & T38FAX_UDP_EC_REDUNDANCY) ? "t38UDPRedundancy" : "t38UDPFEC");
+       len = strlen(v) + strlen(s) + strlen(o) + strlen(c) + strlen(t);
        if (p->udptl)
-               len = strlen(m_modem) + strlen(a_modem);
+               len += strlen(m_modem) + strlen(a_modem);
        add_header(resp, "Content-Type", "application/sdp");
        add_header_contentLength(resp, len);
        add_line(resp, v);