Path: csiph.com!usenet.pasdenom.info!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.net!news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!nzpost1.xs4all.net!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'prefix': 0.07; 'compiler,': 0.16; 'fits': 0.16; 'from:addr:cs': 0.16; 'from:addr:zip.com.au': 0.16; 'from:name:cameron simpson': 0.16; 'guarentee': 0.16; 'message-id:@cskk.homeip.net': 0.16; 'received:211.29': 0.16; 'received:211.29.132': 0.16; 'received:cskk.homeip.net': 0.16; 'received:homeip.net': 0.16; 'received:optusnet.com.au': 0.16; 'received:syd.optusnet.com.au': 0.16; 'sequencing': 0.16; 'simpson': 0.16; 'tcp': 0.16; 'udp,': 0.16; 'wrote:': 0.16; 'to:name:python-list@python.org': 0.20; 'do.': 0.22; 'cheers,': 0.22; '(or': 0.23; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'chris': 0.26; 'another': 0.32; 'received:com.au': 0.33; 'add': 0.34; 'but': 0.36; 'to:addr :python-list': 0.36; 'subject:: ': 0.37; 'charset:us-ascii': 0.37; 'data': 0.39; 'to:addr:python.org': 0.40; 'care': 0.60; 'your': 0.60; 'different': 0.63; 'face': 0.64; 'cameron': 0.66; '>if': 0.84 Date: Mon, 21 Sep 2015 11:55:14 +1000 From: Cameron Simpson To: "python-list@python.org" Subject: Re: Lightwight socket IO wrapper MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) References: X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.1 cv=Xd90t9N5 c=1 sm=1 tr=0 a=t6IGaf1l19PsElHJfDn/BA==:117 a=t6IGaf1l19PsElHJfDn/BA==:17 a=ZtCCktOnAAAA:8 a=PO7r1zJSAAAA:8 a=vrnE16BAAAAA:8 a=kj9zAlcOel0A:10 a=ff-B7xzCdYMA:10 a=pGLkceISAAAA:8 a=_0dsxPLgK63WtyjSPW4A:9 a=IU4GLvOlykxKAOMQ:21 a=iXT4-84l7ymxzGxf:21 a=CjuIK1q_8ugA:10 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1442801735 news.xs4all.nl 23771 [2001:888:2000:d::a6]:39878 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:96907 On 21Sep2015 10:34, Chris Angelico wrote: >If you're going to add sequencing and acknowledgements to UDP, >wouldn't it be easier to use TCP and simply prefix every message with >a two-byte length? Frankly, often yes. That's what I do. (different length encoding, but otherwise...) UDP's neat if you do not care if a packet fails to arrive and if you can guarentee that your data fits in a packet in the face of different MTUs. I like TCP myself, most of the time. Another nice thing about TCP is that wil a little effort you get to pack multiple data packets (or partial data packets) into a network packet, etc. Cheers, Cameron Simpson If you lie to the compiler, it will get its revenge. - Henry Spencer