Getting one character at a time from sockets

[Erno Kuusela]

In article <95qim7$i38$1 at nnrp1.deja.com>, penman <pen_man at my-deja.com>
writes:

| In article <95qg45$5b0$0 at 216.39.151.169>,
|   Donn Cave <donn at oz.net> wrote:
|| Don't mess around with non-blocking.  Even recv(8000) will return
|| more or less immediately if you send any data at all, so it seems
|| kind of likely you're sending no data until the CR.  Substitute a
|| test client that has its data built in, and just send('i') to the
|| server.  I bet recv() will get it right away, Nagel algorithms
|| notwithstanding.

| Thank you, Donn. But the problem is that I have to use ordinary telnet
| clients, such as CRT, Netterm, so let the users access to the server
| without any specialy programs.

the telnet protocol provides a mechanism to negotiate options such
as the character-at-a-time mode. the default is line at a time,
i believe. the rfcs have the details...

| I wonder why nobody ever had the need to recv 1 character "unbuffered"
| in Python.

again: there is no buffering on the python side here.

  -- erno