The entire code is written in Python3.6. Please use this to thest both the server and the client.
For each part these are the two programs and their usage:
$ python3 user.py -h
usage: user.py [-h] [-s HOST] [-p PORT]
optional arguments:
-h, --help show this help message and exit
-s HOST specify remote server name or ip-address
-p PORT specify port number
$ python3 server.py -h
usage: server.py [-h] [-p PORT] [-c CLIENTS]
optional arguments:
-h, --help show this help message and exit
-p PORT specify port number
-c CLIENTS maximum number of clients
The sever uses multithreading with each thread given to a seperate user. The client uses two threads to handle receiving and sending seperated, with synchronisation taken care by a global lock.
Note-1:
I have made a few minor changes to the protocol messgaes, I had to make these changes to account for Python multi-threading, which does not include synchronization (like Java) and this had to be implemented using Locks:
For example: Each protocol message ends with a semi-colon, this is used to seperate the messages recieved by the client-buffer.
For this reason I would recommend my server and client against each other and not with some other Java code because this will break compatability.
Note-2:
<< is the input prompt
>> is the output prompt
See example below. Sometimes a received message might be in the buffer and could take a few prompts before it is posted. For this reason press enter(return) key a few times at the input-prompt and the received message will be printed. This is essentially done to release the lock from input-prompt to the output prompt and go over the received-messages from the received-message-buffer.
Example of three clients and one server. I have used the default argumenst here. Ideally one much provide the arguments. Otherwise the host will default to localhost, and port to 58732.
SERVER:
$ python3 server.py
Social App running on HOSTNAME - v-76
vajj joined
raj joined
raj and vajj are now friends
vajj posted: #status Jackson
shant joined
shant posted: #status Me
CLIENT-1
$ python3 user.py
Enter username: raj
>>'raj' connected to server on ('v-76', 58732)
<<
<<
>>received friend request from vajj: type '@friend vajj' to accept OR
type '@deny vajj' to reject
<<@friend vajj
<<
>>raj and vajj are now friends
<<@add chelsea vajj
<<
<<
<<
>>vajj is now in group chelsea
>>new status from 'vajj'': Jackson
<<
<<
>>new user 'shant' has joined the app
<<
>>received friend request from shant: type '@friend shant' to accept
OR type '@deny shant' to reject
<<
CLIENT-2
$ python3 user.py
Enter username: shant
<<
>>'shant' connected to server on ('v-76', 58732)
<<@connect raj
<<#status Me
<<
<<
>>#statusPosted
CLIENT-3
$ python3 user.py
Enter username: vajj
>>'vajj' connected to server on ('v-76', 58732)
<<
>>new user 'raj' has joined the app
<<@connect raj
<<
>>raj and vajj are now friends
>>vajj is now in group chelsea
<<#status Jackson
<<
>>#statusPosted
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