Hi Sven, Thanks, but I did not explain my problem correctly. My problem is actually super trivial. I have a server that throws continuously plain text (actually, it's a logging facility), and I need to implement a client that connects to it and consumes the plain text endlessly without any feedback to the server. So, essentially, there is no communication protocol involved.
Cheers, Doru On Fri, Feb 24, 2012 at 2:02 PM, Sven Van Caekenberghe <[email protected]> wrote: > Doru, > > I meant: look at ZnServer and friends for inspiration, not to solve the > problem of how to write a simple TCP server. > > If you do just: ZnServer startDefaultOn: 1701 and then talk HTTP over telnet, > it will work as expected: > > $ telnet 127.0.0.1 1701 > Trying 127.0.0.1... > Connected to localhost. > Escape character is '^]'. > GET / HTTP/1.1 > > HTTP/1.1 200 OK > Content-Type: text/html;charset=utf-8 > Content-Length: 1195 > Date: Fri, 24 Feb 2012 12:51:03 GMT > Server: Zinc HTTP Components 1.0 > > <?xml version="1.0" encoding="UTF-8"?> > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" > "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";> > <html> > <head> > <title>Zinc HTTP Components</title> > <style type="text/css"> > body { > color: black; > …. > > > Writing your own delegate means handling HTTP requests and answering with > HTTP responses. (Zn contains a lot of these). > > But I am not sure that you should do that for your problem, on one hand it > might be overkill, on the other hand, HTTP _is_ one of the easiest protocols, > not need to invent something new. If you use HTTP, you get all you need with > Zn. > > The question is: what is on the other side ? what is the client ? > > Sven > > On 24 Feb 2012, at 13:20, Tudor Girba wrote: > >> Hi, >> >> I advanced a bit, but I am still in trouble. >> >> I just want to get a communication going with a simple telnet app. >> Here is what I did: >> >> In Pharo: >> ZnMultiThreadedServer startDefaultOn: 1701. >> ZnMultiThreadedServer default >> delegate: PXSLogDelegate new. >> ZnMultiThreadedServer default >> log addListener: ZnTranscriptLogger new.. >> >> In the Windows 7 command line: >> - telnet localhost 1701 >> - then press ENTER >> >> And in the Transcript I get: >> 2012-02-24 13:16:57 201678 D Executing request/response loop >> 2012-02-24 13:17:02 201678 D ZnUnknownHttpMethod while reading request >> 2012-02-24 13:17:02 201678 D Closing stream >> >> The problem is that I do not want to get as high as http. Is there a >> way to get this working, or is Zinc too high level for this task? >> >> I forgot to mention that I am a total newbie in this area :) >> >> Cheers, >> Doru >> >> >> On Fri, Feb 24, 2012 at 10:56 AM, Tudor Girba <[email protected]> wrote: >>> Thanks, Sven. Will do. >>> >>> Cheers, >>> Doru >>> >>> >>> >>> On Fri, Feb 24, 2012 at 10:37 AM, Sven Van Caekenberghe <[email protected]> >>> wrote: >>>> Doru, >>>> >>>> On 24 Feb 2012, at 10:14, Tudor Girba wrote: >>>> >>>>> Hi, >>>>> >>>>> I would need to listen to a TCP/IP port and receive plain text. What >>>>> is the way to do that in Pharo these days? >>>>> >>>>> Cheers, >>>>> Doru >>>>> >>>>> -- >>>>> www.tudorgirba.com >>>>> >>>>> "Every thing has its own flow" >>>> >>>> Have a look at the ZnServer hierarchy, specifically ZnSingleThreadedServer >>>> which does not spawn threads for each incoming request (not used as such >>>> in Zn, but easier to understand) and ZnMultiThreadedServer which does >>>> spawn threads for each incoming request (the current default in Zn). Start >>>> with #listenLoop. The code is slightly more complicated that example code >>>> because of all the error handling, but I am sure you will be able to read >>>> it. >>>> >>>> HTH, >>>> >>>> Sven >>>> >>>> -- >>>> Sven Van Caekenberghe >>>> http://stfx.eu >>>> Smalltalk is the Red Pill >>>> >>>> >>> >>> >>> >>> -- >>> www.tudorgirba.com >>> >>> "Every thing has its own flow" >> >> >> >> -- >> www.tudorgirba.com >> >> "Every thing has its own flow" >> > > -- www.tudorgirba.com "Every thing has its own flow"
