Change -2 to XMIT_ERROR to clarify a bit more

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@64324 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 5eb8880d3704ab8f039b77af17b7c7666de602fc..c1140eb5126be58a5d7f52e1a01dee7f1eda8117 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -154,6 +154,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #define TRUE     1
 #endif
 
+#define XMIT_ERROR             -2
+
 #define VIDEO_CODEC_MASK        0x1fc0000 /*!< Video codecs from H.261 thru AST_FORMAT_MAX_VIDEO */
 #ifndef IPTOS_MINCOST
 #define IPTOS_MINCOST           0x02
@@ -1757,7 +1759,7 @@ static int __sip_xmit(struct sip_pvt *p, char *data, int len)
                        case EHOSTUNREACH:      /* Host can't be reached */
                        case ENETDOWN:          /* Inteface down */
                        case ENETUNREACH:       /* Network failure */
-                               res = -2;       /* Don't bother with trying to transmit again */
+                               res = XMIT_ERROR;       /* Don't bother with trying to transmit again */
                }
        }
        if (res != len)
@@ -1903,7 +1905,7 @@ static int retrans_pkt(void *data)
                append_history(pkt->owner, "ReTx", "%d %s", reschedule, pkt->data);
                xmitres = __sip_xmit(pkt->owner, pkt->data, pkt->packetlen);
                ast_mutex_unlock(&pkt->owner->lock);
-               if (xmitres == -2)
+               if (xmitres == XMIT_ERROR)
                        ast_log(LOG_WARNING, "Network error on retransmit in dialog %s\n", pkt->owner->callid);
                else
                        return  reschedule;
@@ -1915,7 +1917,7 @@ static int retrans_pkt(void *data)
        } else if ((pkt->method == SIP_OPTIONS) && sipdebug) {
                        ast_log(LOG_WARNING, "Cancelling retransmit of OPTIONs (call id %s) \n", pkt->owner->callid);
        }
-       if (xmitres == -2) {
+       if (xmitres == XMIT_ERROR) {
                ast_log(LOG_WARNING, "Transmit error :: Cancelling transmission of transaction in call id %s \n", pkt->owner->callid);
                append_history(pkt->owner, "XmitErr", "%s", (ast_test_flag(pkt, FLAG_FATAL)) ? "(Critical)" : "(Non-critical)");
        } else
@@ -2001,7 +2003,7 @@ static enum sip_result __sip_reliable_xmit(struct sip_pvt *p, int seqno, int res
 
        xmitres = __sip_xmit(pkt->owner, pkt->data, pkt->packetlen);    /* Send packet */
 
-       if (xmitres == -2) {    /* Serious network trouble, no need to try again */
+       if (xmitres == XMIT_ERROR) {    /* Serious network trouble, no need to try again */
                append_history(pkt->owner, "XmitErr", "%s", (ast_test_flag(pkt, FLAG_FATAL)) ? "(Critical)" : "(Non-critical)");
                ast_sched_del(sched, pkt->retransid);   /* No more retransmission */
                pkt->retransid = -1;
@@ -2870,7 +2872,7 @@ static int sip_call(struct ast_channel *ast, char *dest, int timeout)
                        if (option_debug > 1)
                                ast_log(LOG_DEBUG,"Our T38 capability (%d), joint T38 capability (%d)\n", p->t38.capability, p->t38.jointcapability);
                        xmitres = transmit_invite(p, SIP_INVITE, 1, 2);
-                       if (xmitres == -2)
+                       if (xmitres == XMIT_ERROR)
                                return -1;      /* Transmission error */
 
                        p->invitestate = INV_CALLING;
@@ -6445,7 +6447,7 @@ static void copy_request(struct sip_request *dst, const struct sip_request *src)
 }
 
 /*! \brief Used for 200 OK and 183 early media 
-       \return Will return -2 for network errors.
+       \return Will return XMIT_ERROR for network errors.
 */
 static int transmit_response_with_sdp(struct sip_pvt *p, const char *msg, const struct sip_request *req, enum xmittype reliable)
 {
@@ -7540,7 +7542,7 @@ static int transmit_info_with_vidupdate(struct sip_pvt *p)
 }
 
 /*! \brief Transmit generic SIP request 
-       returns -2 if transmit failed with a critical error (don't retry)
+       returns XMIT_ERROR if transmit failed with a critical error (don't retry)
 */
 static int transmit_request(struct sip_pvt *p, int sipmethod, int seqno, enum xmittype reliable, int newbranch)
 {
@@ -11974,7 +11976,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, char *rest, stru
                        ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
                break;
        }
-       if (xmitres == -2)
+       if (xmitres == XMIT_ERROR)
                ast_log(LOG_WARNING, "Could not transmit message in dialog %s\n", p->callid);
 }
 
@@ -15311,7 +15313,7 @@ static int sip_poke_peer(struct sip_peer *peer)
        xmitres = transmit_invite(p, SIP_OPTIONS, 0, 2);
 #endif
        gettimeofday(&peer->ps, NULL);
-       if (xmitres == -2)
+       if (xmitres == XMIT_ERROR)
                sip_poke_noanswer(peer);        /* Immediately unreachable, network problems */
        else
                peer->pokeexpire = ast_sched_add(sched, DEFAULT_MAXMS * 2, sip_poke_noanswer, peer);