Re: TCP (or UDP) daytime client in Smalltalk
| Newsgroups | gmane.comp.lang.smalltalk.gnu.general |
|---|---|
| Message-ID | <[email protected]> |
It works ! Thanks for your help: Assuming that the old 'legacy' daytime stream server runs on tcp port 13: $ gst daytime.st Loading package ObjectDumper Loading package Sockets 'Sat Jun 6 10:30:16 2020' $ cat daytime.st Eval [ PackageLoader fileInPackage: 'Sockets'. s _ Sockets.Socket remote:(Sockets.SocketAddress createLoopbackHost) port:13. (s upTo: Character cr) printNl. s close. ] So the problem was that you have to use the 'namespace'. Thanks, David Stes ----- Op 4 jun 2020 om 20:15 schreef Derek Zhou [email protected]: > [email protected] writes: > >> The docs have an incorrect reference: >> >> https://www.gnu.org/software/smalltalk/manual/html_node/Network-support.html#Network-support >> >> if you click on " Network programming with Sockets " that link is broken. > Use the locally install docs. And most likely you need to read the > source code as the doc is not that good. >> >> I've tried the following: >> >> Eval [ >> >> PackageLoader fileInPackage: 'Sockets'. >> PackageLoader fileInPackage: 'NetClients'. >> >> s _ Socket remote:(SocketAddress createLoopbackHost) port:13. >> (s upTo: Character cr) printNl. >> s close. >> >> ] >> >> This fails: >> >> Object: nil error: did not understand #createLoopbackHost >> MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254) >> UndefinedObject(Object)>>doesNotUnderstand: #createLoopbackHost >> (SysExcept.st:1408) >> UndefinedObject>>executeStatements (daytime.st:7) >> >> >> Apparently it does not know about the SocketAdress class (subclass of >> IPAddress). There must be some other way apparently to load that class. >> >> Shouldn't loading the packages be sufficient to get the SocketAdress class ? > > Yes. However, gnu smalltalk has namespace. It should be Sockets.SocketAddress, > or you > can <import: Sockets> > > Derek