XMPP MUC duplicate message on sending message to room

Question

I am working on a chat application to achieve multiuser chat functionality. I am able to join room and send message but i am facing a strange problem. While sending message to room, message repeat/duplicate itself. This issue is in sender side (user who is sending message to room) while other users in room are getting one message which is correct.

- (void)sendMessageWithBody:(NSString )messageBody andMessageId:(NSString) messageId 
{ 
if ([messageBody length] == 0) return; 
NSXMLElement *body = [NSXMLElement elementWithName:@"body" stringValue:messageBody];
 XMPPMessage *message = [XMPPMessage message];
 [message addAttributeWithName:@"id" stringValue:messageId];
 [message addChild:body];
 [self sendMessage:message]; 
} 

Answer 1

- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
    XMPPLogTrace();

    NSString* fromStr;
    NSArray* arrayFrom = [[message fromStr] componentsSeparatedByString:@"/"];
    if ([arrayFrom count] > 1)
    {
        fromStr = [arrayFrom objectAtIndex:1];
    }

    NSString* toStr;
    NSArray* arrayTo = [[message toStr] componentsSeparatedByString:@"@"];

    if ([arrayTo count] > 1)
    {
        toStr = [arrayTo objectAtIndex:0];
    }
    if ([fromStr isEqualToString:toStr] || ([[message body] length] == 0)) {
        return;
    }
    if ([self shouldArchiveMessage:message outgoing:NO xmppStream:sender])
    {
        [xmppMessageArchivingStorage archiveMessage:message outgoing:NO xmppStream:sender];
    }
}