Re: IO::Socket::INET on OSX or TCP stack problem

"SG" == Stuart Gall <stuart@xxxxxxxxx> writes:

SG> On 2009-05-10 19:29:47 +0300, Uri Guttman <uri@xxxxxxxxxxxxxxx> said:

SG> So it must be either a perl/osx thing or there must be something odd
SG> about the TCP packets coming from these modbus devices which is
SG> upsetting OSX.

hard to say from here. i highly doubt it is perl. if you want to verify
this do the same thing in c or another language. or google for this
situation and see if others have seen it.

>> why the begin block? declaring empty vars subs in begin blocks does
>> nothing.

SG> It makes them static.
SG> Is there another way to define a static variable ?

just declaring vars outside a sub makes them static. the issue is more
about scoping than compile vs run time which is what BEGIN controls.

SG> sub OpenSocket($) {
>>
>> why are you using prototypes? they are meant for one thing alone
>> (changing how a sub call is parsed). they are not useful for arg
>> checking or stuff.

SG> I am using perl -w - I dont usually, but while I am trying to figure
SG> out why this script does not work I am.
SG> perl -w complains if you don't use prototypes. Or is there some other
SG> way around that ?

huh?? perl doesn't complain if you don't use prototypes. it will complain if
you use wrong prototypes. don't put any () after the sub names. read
perldoc perlsub for more.

uri

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