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Subject: Re: [libssh2] Non-blocking vs. default mode

Re: [libssh2] Non-blocking vs. default mode

From: James Housley <jim_at_thehousleys.net>
Date: Sun, 22 Apr 2007 18:24:51 -0400

On Apr 22, 2007, at 5:52 PM, Daniel Stenberg wrote:

> On Sun, 22 Apr 2007, James Housley wrote:
>
>> I think maybe we should remove the *nb() functions and make the
>> old names just work. I would also like to keep old programs
>> working in all cases, as long as they didn't set non-blocking to
>> true (since we know that didn't work). But before proceeding I
>> would like to wait a while, April 29th, to allow others a chance
>> to chime in.
>
> We would then need to modify the prototypes for several of the old
> functions as the non-blocking ones need to be able to return
> *_EAGAIN and there is a bunch of functions in the 0.14 API that
> don't easily allow that without modifications.
>
> A few examples: libssh2_session_init_ex, libssh2_sftp_open_ex,
> libssh2_sftp_init, ... Basically all that operations on sockets
> that return a struct/handle.

Those I am thinking about, but currently they return NULL on error.
So if we used the error codes these could work with minimal changes.

>
> So while this makes a bigger impact on existing applications, I'm
> still leaning towards this being the better idea, to minimize the
> amount of function entries and code.

Jim

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Received on 2007-04-23

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