Path: utzoo!attcan!utgpu!watmath!iuvax!cica!tut.cis.ohio-state.edu!osu-20.ircc.ohio-state.edu!salter-j
From: SALTER-J@osu-20.ircc.ohio-state.edu (John Salter)
Newsgroups: comp.sys.mac.hypercard
Subject: Problem with MacTCP Toolkit V 1.0
Keywords: MacTCP
Message-ID: <12536425863029@osu-20.ircc.ohio-state.edu>
Date: 23 Oct 89 16:04:01 GMT
Sender: news@tut.cis.ohio-state.edu
Organization: The Ohio State University, Columbus, Ohio
Lines: 48

I have a problem with MacTCP Toolkit V 1.0 with the Hypercard
interface when trying to connect (telnet) to one of our TCP/IP hosts.

The problem seems related to sending data using TCPSend.

Either, the Host is not receiving the characters as they are sent of
not interperting them correctly.

I was able to duplicate the behavior problem of the host
in a non-TCP/IP environment which I better understand.  Using a
asynchronous gateway to the same hosts and by changing the parity (even)
or the word length (7 bits) of the async software produce the same
problem. 

In the setup of the paramater block for TCPSend I didn't see anything
that was analogous to word length of parith setting in the TCP Parameter
block.  What are "validity bits"?

I tried setting and clearing the high bit of data in the send buffer
but that didn't help.

I have had successful connections to other hosts using the MacTCP
Toolkit.

The Host is a Bridge Box providing a gateway to an IBM Mainframe.  This
bridge box translates SNA-TCP/IP.  I am trying to learn more about
this box and the form of the TCP/IP data it expects.

By the way,  NCSA Telnet for the Mac talks to this Host just fine.

Is there a good source of documentation on TCP/IP communications programming?

I am new to Mac system programming.  Who do I address these questions?

To repeat my question, is there some parameter settings of data modification
in a program interface to MacTCP that is anologous to word length of parity
in the async arena?

Does anyone else have problems with MacTCP's TCPSend?

Any suggestions to help me solve my problem is greatly appreciated.

John Salter
Prgrammer/Analyst
Ohio State University Library
1858 Neil Avenue
Columbus, Ohio 43210
salter-j@osu-20@ohio-state.edu
(614) 292-6151