Changeset 3221 for pjproject/trunk/pjmedia/src/pjmedia/transport_srtp.c

Timestamp:

Jun 24, 2010 8:46:12 AM (14 years ago)

Author:

nanang

Message:

Fix #1075:

• Fixed SRTP transport to only (re)start the SRTP state when the SRTP crypto settings are updated.

File:

• pjproject/trunk/pjmedia/src/pjmedia/transport_srtp.c (modified) (3 diffs)

pjproject/trunk/pjmedia/src/pjmedia/transport_srtp.c

@@ -313 +313 @@
 }
 
+
 static int get_crypto_idx(const pj_str_t* crypto_name)
 {
@@ -329 +330 @@
     return -1;
 }
+
+
+static int srtp_crypto_cmp(const pjmedia_srtp_crypto* c1,
+                           const pjmedia_srtp_crypto* c2)
+{
+    int r;
+
+    r = pj_strcmp(&c1->key, &c2->key);
+    if (r != 0)
+        return r;
+
+    r = pj_stricmp(&c1->name, &c2->name);
+    if (r != 0)
+        return r;
+
+    return (c1->flags != c2->flags);
+}
+
 
 PJ_DEF(void) pjmedia_srtp_setting_default(pjmedia_srtp_setting *opt)
@@ -1491 +1510 @@
 
     /* Got policy_local & policy_remote, let's initalize the SRTP */
-    status = pjmedia_transport_srtp_start(tp, &srtp->tx_policy_neg, &srtp->rx_policy_neg);
-    if (status != PJ_SUCCESS)
-        return status;
+
+    /* Ticket #1075: media_start() is called whenever media description
+     * gets updated, e.g: call hold, however we should restart SRTP only
+     * when the SRTP policy settings are updated.
+     */
+    if (srtp_crypto_cmp(&srtp->tx_policy_neg, &srtp->tx_policy) ||
+        srtp_crypto_cmp(&srtp->rx_policy_neg, &srtp->rx_policy))
+    {
+        status = pjmedia_transport_srtp_start(tp,
+                                              &srtp->tx_policy_neg,
+                                              &srtp->rx_policy_neg);
+        if (status != PJ_SUCCESS)
+            return status;
+    }
 
     goto PROPAGATE_MEDIA_START;