Do not freak out when the to address of SIP Messages is not AAAA/A resolvable (report by Dan Bogos)

src/net/java/sip/communicator/impl/protocol/sip/OperationSetBasicInstantMessagingSipImpl.java

@@ -379,15 +379,6 @@ Request createMessage(Contact to, Message message)
         try
         {
             toAddress = parseAddressStr(to.getAddress());
-
-            destinationInetAddress = InetAddress.getByName(
-                ( (SipURI) toAddress.getURI()).getHost());
-        }
-        catch (UnknownHostException ex)
-        {
-            throw new IllegalArgumentException(
-                ( (SipURI) toAddress.getURI()).getHost()
-                + " is not a valid internet address " + ex.getMessage());
         }
         catch (ParseException exc)
         {
@@ -401,6 +392,33 @@ Request createMessage(Contact to, Message message)
                 , OperationFailedException.INTERNAL_ERROR
                 , exc);
         }
+        
+        try
+        {
+            destinationInetAddress = InetAddress.getByName(
+                ( (SipURI) toAddress.getURI()).getHost());
+        }
+        catch (UnknownHostException ex)
+        {
+            //getByName() verifies host existance with an AAAA/A check and the 
+            //destination could only have an SRV record so let's not let this 
+            //bother us and only log it (report by Dan Bogos)
+            logger.warn( ( (SipURI) toAddress.getURI()).getHost()
+                + " is not a valid internet address " + ex.getMessage());
+            
+            //replace the destination address with that of the proxy if we 
+            //have it or that of the registrar otherwise.
+            if(sipProvider.getOutboundProxy() != null)
+            {
+                destinationInetAddress
+                    = sipProvider.getOutboundProxy().getAddress();
+            }
+            else
+            {
+                destinationInetAddress
+                    = sipProvider.getRegistrarConnection().getRegistrarAddress();
+            }
+        }
 
         // Call ID
         CallIdHeader callIdHeader = this.sipProvider

src/net/java/sip/communicator/impl/protocol/sip/ProtocolProviderServiceSipImpl.java

@@ -1873,6 +1873,31 @@ public Address getOurSipAddress()
     {
         return ourSipAddress;
     }
+    
+    /**
+     * In case we are using an outbound proxy this method returns its address.
+     * The method returns <tt>null</tt> otherwise.
+     * 
+     * @return the address of our outbound proxy if we are using one and 
+     * <tt>null</tt> otherwise.
+     */
+    public InetSocketAddress getOutboundProxy()
+    {
+        return this.outboundProxySocketAddress;
+    }
+
+    /**
+     * In case we are using an outbound proxy this method returns the transport
+     * we are using to connect to it. The method returns <tt>null</tt> 
+     * otherwise.
+     * 
+     * @return the transport used to connect to our outbound proxy if we are 
+     * using one and <tt>null</tt> otherwise.
+     */
+    public String getOutboundProxyTransport()
+    {
+        return this.outboundProxyTransport;
+    }
 
     /**
      * Extracts all properties concerning the usage of an outbound proxy for