Re: Why not have a recvall method?
Thank you, it's very helpful.
I think the recvall should builtin to the _socket module like sendall.
-- Original --
From: "Dan Stromberg";
Date: Mon, Feb 5, 2018 06:01 AM
To: "陶青云";
Cc: "python-list";
Subject: Re: Why not have a recvall method?
On Sun, Feb 4, 2018 at 5:26 AM, 陶青云 wrote:
> Hello, all
> The socket object has a `sendall` method that can send all bytes you
> specified.
> Oppositely, socket only has a recv method. I wonder why there is not a
> `recvall` method?
> To workaround this, I use `f = socket.makefile('rb')`, then all `f.read(n)`
> Thanks.
You're probably good with socket.makefile('rb').
An alternative that allows things like reading null-terminated input:
http://stromberg.dnsalias.org/~strombrg/bufsock.html
I wrote it and have been using it in production for years.
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Re: Why not have a recvall method?
On Sun, Feb 4, 2018 at 5:26 AM, 陶青云 wrote:
> Hello, all
> The socket object has a `sendall` method that can send all bytes you
> specified.
> Oppositely, socket only has a recv method. I wonder why there is not a
> `recvall` method?
> To workaround this, I use `f = socket.makefile('rb')`, then all `f.read(n)`
> Thanks.
You're probably good with socket.makefile('rb').
An alternative that allows things like reading null-terminated input:
http://stromberg.dnsalias.org/~strombrg/bufsock.html
I wrote it and have been using it in production for years.
--
https://mail.python.org/mailman/listinfo/python-list
Re: Why not have a recvall method?
makefile('rb') return a io.BufferedReader and the
doc(https://docs.python.org/3/library/io.html#io.BufferedIOBase.read) says:
If the argument is positive, and the underlying raw stream is not
interactive, multiple raw reads may be issued to satisfy the byte count (unless
EOF is reached first).
-- Original --
From: "Steven D'Aprano";
Date: Sun, Feb 4, 2018 09:31 PM
To: "python-list";
Subject: Re: Why not have a recvall method?
On Sun, 04 Feb 2018 19:26:36 +0800, 陶青云 wrote:
> Hello, allThe socket object has a `sendall` method that can send all
> bytes you specified. Oppositely, socket only has a recv method. I wonder
> why there is not a `recvall` method? To workaround this, I use `f =
> socket.makefile('rb')`, then `call f.read(n)` Thanks.
I am not an expert on sockets, but since f.read(n) will read a maximum of
n bytes, isn't that the same as socket_obj.recv(n)?
--
Steve
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Re: Why not have a recvall method?
On Sun, 04 Feb 2018 19:26:36 +0800, 陶青云 wrote:
> Hello, allThe socket object has a `sendall` method that can send all
> bytes you specified. Oppositely, socket only has a recv method. I wonder
> why there is not a `recvall` method? To workaround this, I use `f =
> socket.makefile('rb')`, then `call f.read(n)` Thanks.
I am not an expert on sockets, but since f.read(n) will read a maximum of
n bytes, isn't that the same as socket_obj.recv(n)?
--
Steve
--
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Why not have a recvall method?
Hello, all
The socket object has a `sendall` method that can send all bytes you specified.
Oppositely, socket only has a recv method. I wonder why there is not a
`recvall` method?
To workaround this, I use `f = socket.makefile('rb')`, then all `f.read(n)`
Thanks.
--
https://mail.python.org/mailman/listinfo/python-list
Why not have a recvall method?
Hello, allThe socket object has a `sendall` method that can send all bytes you
specified. Oppositely, socket only has
a recv method. I wonder why there is not a `recvall` method?
To workaround this, I use `f = socket.makefile('rb')`, then `call f.read(n)`
Thanks.
--
https://mail.python.org/mailman/listinfo/python-list
recvall()
Hi All, I am trying to program an HTTP webserver, I am a little confused about the best way to program a recvall function. There are a couple of ways to do this? But performance wise which one is better? a) recvall using a timeout? b) recvall using a condition that nothing was received? c) recvall using a condition for it to wait for a CRLF or a timeout whichever occurs first? Any help would be appreciated. Regards, Nav -- http://mail.python.org/mailman/listinfo/python-list
