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Date:	Tue, 2 Jun 1998 11:47:18 PST8PDT
From:	"Gregory W. Smith" <gsmith@well.com >
Reply-To:	scoug-programming@scoug.com
To:	< "scoug-programming@scoug.com" > scoug-programming@scoug.com >
Subject:	SCOUG-Programming: GetLine()

Content Type: text/plain

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On Tue, 2 Jun 1998 09:44:36 PST8PDT, Steven Levine wrote:

>Time for my 2cents. The above only fixes part of the problem and can
>return a buffer without and NL to the caller. The "specifications" don't
>say if the caller must handle this.

That was the obvious problem that I referred to. A slow typist could
cause the send command to be invoked more than twice depending
on the client. Type the command.... Go look up the options. Type
the options.... Go look at a file listing. Type the file name.... Answer the
phone. Then hit return. It is conceivable that send() could be invoked
during each pause.

>
>char *GetLine(int Socket){
>
> static char Buffer[4096];
> int rc = 0;
> int offset = 0;
>
> while (rc >= 0 && offset < sizeof(Buffer)){
>
> rc = recv (Socket, Buffer + offset, sizeof (Buffer) - offset,
>0);
>
> if (rc > 0) {
> if ( '\n' == Buffer[offset+rc-1] )
> return Buffer;
> else
> offset += rc;
> }
> }
>
> return NULL; /* No NL or recv failed */
>}
>
>What's left is to decide how many times we allow recv to return no data
>before giving up.
>
>Steven
>
>--
>-----------------------------------------------------------
>Steven Levine MR2/ICE #10183
>-----------------------------------------------------------

===============================================================
Gregory W. Smith (WD9GAY) gsmith@well.com
finger gsmith@well.com for PGP public key
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