Netty Chat

This is a simple asynchronous and non blocking chat server and client to play a bit with Netty 4 and Java.

Features:

• account creation
• login / logout
• contact lists with offline invitations support
• instant messages with offline messaging support
• text UI or recordable commands

A permanent TCP connection is used similar to XMPP for all messages between clients and server. A fast custom encoder/decoder is used just as a demonstration of Netty capabilities.

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Compile / run: mvn install

create DB tables: com.thn.netty.chat.server.store.JdbcUserStore

start the server: com.thn.netty.chat.server.Server

start a client: com.thn.netty.chat.client.Client

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When starting the client:

0) Exit 
1) Create Account <username> <password>
2) Login <username> <password>
3) Logout 
4) Add Contact Invite <contactName>
5) Add Contact Response <userName> <accepted(true/false)>
6) Remove Contact <contactName>
7) Get Pending Contact Invitations 
8) Instant Message <recipient> <message>
9) Get Pending Messages 
10) Shutdown Server 

Alice logs in

2 Alice mypass

2014-01-08 12:34:08 INFO  MessageHandler:58 - cmd sent: LoginRequest[mType=LOGIN(2),mId=1,mUserName=UserName[mName=Alice],mPassword=mypass]
2014-01-08 12:34:08 INFO  MessageHandler:73 - msg received: OkResponse[mType=OK(15),mId=1]

Bob logs in

2 Bob mypass

2014-01-08 12:35:14 INFO  MessageHandler:58 - cmd sent: LoginRequest[mType=LOGIN(2),mId=1,mUserName=UserName[mName=Bob],mPassword=mypass]
2014-01-08 12:35:14 INFO  MessageHandler:73 - msg received: OkResponse[mType=OK(15),mId=1]

(log4j logs omitted below)

Bob sends add contact invitation to Alice

4 Alice

Alice who's online receives the invitation

Received contact request from UserName[mName=Bob]

Alice accepts the invitation: both users are contact of each other

5 Bob true

Bob receives Alice's response

Received contact response from UserName[mName=Alice]. Invitation accepted: true

Bob sends a message to Alice

8 Alice hello

Alice who's online receives the message

Received message from Bob: hello

Alice logs out and Bob sends a message to Alice

8 Alice Hi

Charlie logs in and sends a contact request to Alice who's offline

2 Charlie mypass

4 Alice

Alice logs in and fetches offline messages

2 Alice mypass

9

New messages: [MessageInfo[mSender=UserName[mName=Bob],mRecipient=<null>,mMessage=Hi]]

Alice fetches pending contact requests

7

These users ask permission to add you in their contact list: [UserName[mName=Charlie]]