How does TCP Send work?
BlitzMax Forums/BlitzMax Programming/How does TCP Send work?
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| To people with c,c++ or java backgroung or equivalent.. TCP is stream based. So what happens when I send a TCP message? Does it only adds to a buffer and send a some predetermined interval I can't control? With UDP a message nomatter how big it is, it is sent when you run sendto( Data$ , IP , Port). But I'm unsure if TCP acts the same. And if TCP send() does not actually send one message how would I receive that message intact? Or is all this done under the hood? So that what I send and recv is like complete messages, what if I send one byte at a time? What happens if I send TCP messages on a UDP_Socket? Do I send UDP messages then? or is it a connectionless TCP? Soo strange.. Can't find any information about it. Why would I use Connect on a UDP connection? To determine if it exists only? And what does the optional Flags do? |
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| SetTCPNoDelay in TSocket should turn off the nagel algorithm which you could google for a good introduction to TCP stuff in general. The most basic difference is there is no end of file with a TCPStream, it is just one big long transmission. What is this TCP message thing you refer to? Messages are for UDP, streams are what you get with TCP, THAT is the difference. |
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| Great, now I know exactly what TCPDelay in max does =) but I'm still unsure what the BlitzMax commands does, when I search for TCP and send() I don't get many relevant results. In BlitzMax the Socket.send() Socket.recv() and sendto_() and receivefrom_() doesn't have any documentation. I can guess what sendto and receivefrom does because they deal with UDP, but with TCP I don't know. I found some stuff about TCP so I'm reading it now. Still my problem (I think) has to do how BlitzMax handles it. Are the functions similar to some c++ library to which you can link me the manual? I mean if I can send TCP over a UDP connection and TCP over a UDP then why split them up? Got any links to "dangers of mixing UDP and TCP" ? |
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| See pub.mod/stdc.mod/stdc.c for the standard calls we are using then check out some posix docs such as: http://linux.com.hk/PenguinWeb/manpage.jsp?section=2&name=send |
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| Thanks, I think I'll solve it now. |
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