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|
"SimpleChat -- a SimpleTCP handler for a chat server"
"http://sblinn.jottit.com/gnu_smalltalk_simplechat_tcp_server"
Namespace current addSubspace: #SimpleChat!
Namespace current: SimpleChat!
Object subclass: #Handler
instanceVariableNames: 'clients'
classVariableNames: ''
poolDictionaries: ''
category: ''!
!Handler class methodsFor: 'instance creation'!
new
| chatHandler |
chatHandler := super new.
chatHandler init.
^chatHandler
!!
!Handler methodsFor: 'initialization'!
init
clients := Dictionary new.
^self
!!
!Handler methodsFor: 'handling'!
handle: aSocket
[self handleSocket: aSocket] fork
!!
!Handler methodsFor: 'internal handling'!
handleSocket: aSocket
| Name |
'Name: ' displayOn: aSocket.
aSocket flush.
Name := (aSocket nextLine).
(clients includesKey: Name) ifTrue: [
'Sorry, that name is in use.' displayOn: aSocket.
(Character nl asString) displayOn: aSocket.
self handle: aSocket
] ifFalse: [
self handleMessage: ('New user: ', Name) from: '[System]'.
clients at: Name put: aSocket.
self handleClient: aSocket named: Name
]
!
handleClient: aSocket named: Name
[
| Message |
self sendPrompt: aSocket.
Message := (aSocket nextLine).
self handleMessage: Message from: Name.
] repeat
!
handleMessage: Message from: Name
clients associationsDo: [ :assoc |
(Name = (assoc key)) ifFalse: [
self sendMessage: ((Character nl asString), Name, ' sent: ', Message) to: (assoc value).
self sendPrompt: (assoc value)
] ifTrue: [
self sendMessage: ('You sent: ', Message) to: (assoc value)
]]
!
sendMessage: Message to: aSocket
Message displayOn: aSocket.
(Character nl asString) displayOn: aSocket
!
sendPrompt: aSocket
'> ' displayOn: aSocket.
aSocket flush
!!
Namespace current: SimpleChat superspace!
|
