mak@cs.nott.ac.uk (Martijn Koster) (10/23/90)
Hello all, I've got a slight problem: I'm using MacTCP, and have it set up so it can look-up names. I tested this with the "TCP Example" stack that came on one of the developer disks. It works fine, but then I tried adding hostnames in the Hosts file (in the System Folder, and yes, it's a text only file). This didn't work. I tried the following: aa-> A-> 128.243.20.4 bb.-> A-> 128.243.20.4 cc.cs.nott.ac.uk-> A-> 128.243.20.4 dd.cs.nott.ac.uk.-> A-> 128.243.20.4 ee.nott.ac.uk-> A-> 128.243.20.4 ff.nott.ac.uk.-> A-> 128.243.20.4 The '->' signifies a tab, and lines are nded with a return. 128.243.20.4 does exist, is in fact the machine I'm using now. And then I tried all the hostnames, but "TCP Example" returned $$$ Couldn't get address $$$ Can somebody explain what I'm doing wrong? I'd love to RTFM, but somebody has managed to lose it or something. Also, has someone written a program to convert a /etc/hosts file to a MacTCP Hosts file? And lastly, doesn't NCSA Telnet 2.3 use MacTCP name resolver? I ended up writing a program to convert /etc/hosts to a config.tel file (that awk script that came with telnet choked on comments). Thanks very much in advance, Martijn Koster Details: MacPlus, 2.5 Meg RAM, 20 Meg Rodime SCSI HD, System 6.0.5 (MacPlus, 4 Meg RAM, 40 Meg Apple SC HD, System 6.0.3 didn't work either) The Plus sits on LocalTalk, with a FastPath connected to the ethernet. MacTCP version 1.0.1, gets its IP Number of a server, DNS information has one entry "cs.nott.ac.uk".
resnick@cogsci.uiuc.edu (Pete Resnick) (10/24/90)
mak@cs.nott.ac.uk (Martijn Koster) writes: > aa-> A-> 128.243.20.4 > bb.-> A-> 128.243.20.4 I don't think either one of these is valid domain name syntax. > dd.cs.nott.ac.uk.-> A-> 128.243.20.4 > ff.nott.ac.uk.-> A-> 128.243.20.4 That "." at the end might be screwing you up. I am also not sure how smart the DNR is. If something in the file is screwy, it might not be too happy. But the other example you give should work. I have tabs in my file. You might try without to test it. >And lastly, doesn't NCSA Telnet 2.3 use MacTCP name resolver? I ended >up writing a program to convert /etc/hosts to a config.tel file (that >awk script that came with telnet choked on comments). Nope. NCSA uses their own resolver. I don't think that will ever change. (*Sigh*) pr -- Pete Resnick (...so what is a mojo, and why would one be rising?) Graduate assistant - Philosophy Department, Gregory Hall, UIUC System manager - Cognitive Science Group, Beckman Institute, UIUC Internet/ARPAnet/EDUnet : resnick@cogsci.uiuc.edu BITNET (if no other way) : FREE0285@UIUCVMD
lefty@TWG.COM (10/25/90)
Martijn Koster <mcsun!ukc!warwick!nott-cs!mak@uunet.uu.net> writes: >I've got a slight problem: I'm using MacTCP, and have it set up Message-ID: <9010241459.aa17312@Mercury.TWG.COM> >so it can look-up names. I tested this with the "TCP Example" stack >that came on one of the developer disks. It works fine, but then I >tried adding hostnames in the Hosts file (in the System Folder, and >yes, it's a text only file). This didn't work. I tried the following: > > aa-> A-> 128.243.20.4 > bb.-> A-> 128.243.20.4 > cc.cs.nott.ac.uk-> A-> 128.243.20.4 > dd.cs.nott.ac.uk.-> A-> 128.243.20.4 > ee.nott.ac.uk-> A-> 128.243.20.4 > ff.nott.ac.uk.-> A-> 128.243.20.4 > >The '->' signifies a tab, and lines are nded with a return. >128.243.20.4 does exist, is in fact the machine I'm using now. >And then I tried all the hostnames, but "TCP Example" returned > > $$$ Couldn't get address $$$ > >Can somebody explain what I'm doing wrong? I'd love to RTFM, but >somebody has managed to lose it or something. I believe that the TCP Stack uses Harry Chesley's sample XCMDs, which are supplied as the "Hypercard MacTCP Tool Kit". There is a minor problem with Harry's code to use the MacTCP Domain Name Resolver functions: specifically, when Harry's code opens the resolver, if it isn't supplied with the name of a specific file to open, it passes a pointer to a null _string_ to the Resolver, rather than a null _pointer_. The Resolver only seems to look for a file called "Hosts" in the System Folder if it's passed a null _pointer_. You'll need to make a correction to Harry's XCMD to fix the situation described above--it's a pretty trivial hack. By the way, Harry's code is otherwise impeccable... To make the appropriate fix, find the following lines in the file TCPNameToAddr.c: /* Call open resolver. */ if ((paramPtr->paramCount < 3) || (paramPtr->params[2] == nil)) *str = 0; else strcpy(str,*(paramPtr->params[2])); rc = (*dnr)(OPENRESOLVER, str); They _should_ read: /* Call open resolver. */ if ((paramPtr->paramCount < 3) || (paramPtr->params[2] == nil)) { rc = (*dnr)(OPENRESOLVER, nil); } else { strcpy(str,*(paramPtr->params[2])); rc = (*dnr)(OPENRESOLVER, str); } >Also, has someone written a program to convert a /etc/hosts file to a >MacTCP Hosts file? Sorry, not me... >And lastly, doesn't NCSA Telnet 2.3 use MacTCP name resolver? I ended >up writing a program to convert /etc/hosts to a config.tel file (that >awk script that came with telnet choked on comments). Actually, I don't believe that it does. It's too bad, too, because it's easy to implement and it seems to work real well... Hope this helps... -- David N. Schlesinger (lefty@twg.com) Sr. Software Engineer The Wollongong Group