[Pharo-users] ZnClient>>#close & socket semaphores

May 15, 2012

      I ran into an out-of-external semaphores error when testing the Tropo 
API. It uses ZnEasy to post data to their api servers.  I know I can 
raise the semaphore limit by running:

Smalltalk vm maxExternalSemaphoresSilently: 3000.

then saving.  But I wondered if changing ZnClient>>#close to this:

close
	"Close any HTTP network connection that I might have kept open."

	connection
		ifNotNil: [
			connection close: self isOneShot.
			connection := nil.
			state := #closed ].
	lastUsed := nil

And then adding these two methods:

ZdcAbstractSocketStream>>#close:
close: andDestroy
	"Close the stream, flush if necessary"

	self flush.
	socket isNil
		ifTrue: [ ^ self ].
	self socketClose: andDestroy.
	socket := nil

ZdcAbstractSocketStream>>#socketClose: andDestroy
	andDestroy
		ifTrue: [ socket closeAndDestroy ]
		ifFalse: [ socket close ]

might enable ZnClient to clean up after it issues 'one shot' requests in 
a safe manner.

I can submit a change if so ( an a test! ).

Thanks
Paul

[Pharo-users] ZnClient>>#close & socket semaphores

Paul DeBruicker