misc/firestuff
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

SCTP Part #1

Browse Source
This commit is contained in:
Ian Gulliver
2019-04-21 17:26:31 +00:00
parent 0fa0ed4f63
commit 71fe4fcb56
4 changed files with 89 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
2006-02-26-sctp-part-1.html Normal file
View File

@@ -0,0 +1,45 @@
<p>htmhtmll<!--# set var="title" value="SCTP Part #1" -->
<!--# set var="date" value="February 26, 2006" --></p>
<!--# include file="include/top.html" -->
<p>I’ve been doing some work with SCTP lately. I’m working through some of the intricacies of the protocol and the brain damage of the APIs (there are two of them, and they both suck). As I write my own API, I thought I’d post a few things here showing, from examples, the nifty stuff that the protocol does. Here’s the first, dealing with message length preservation:</p>
<pre><code>MSG_EOR = 128
</code></pre>
<p>IPV6/TCP:</p>
<pre><code>send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recv(16, MSG_DONTWAIT) = 16
recv(16, MSG_DONTWAIT) = -1
========
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recvmsg(5, MSG_DONTWAIT) = 5
-----&gt; msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = 11
-----&gt; msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = -1
-----&gt; msg_flags = 0
</code></pre>
<p>IPV6/SCTP:</p>
<pre><code>send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recv(16, MSG_DONTWAIT) = 8
recv(16, MSG_DONTWAIT) = 8
========
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recvmsg(5, MSG_DONTWAIT) = 5
-----&gt; msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = 3
-----&gt; msg_flags = 128
recvmsg(11, MSG_DONTWAIT) = 8
-----&gt; msg_flags = 128
</code></pre>
<!--# include file="include/bottom.html" -->

1
index.html
View File

@@ -38,6 +38,7 @@
<li>2010-Mar-26: <a href="2010-03-26-fun-with-map-visualizations.html">Fun with map visualizations</a></li>
<li>2010-Mar-09: <a href="2010-03-09-karaoke-project.html">Karaoke project</a></li>
<li>2009-Sep-11: <a href="2009-09-11-confusing-bind-with-cnames.html">Confusing BIND with CNAMEs</a></li>
<li>2009-Feb-26: <a href="2006-02-26-sctp-part-1.html">SCTP Part #1</a></li>
<li>2009-Feb-19: <a href="2019-02-19-the-odd-case-of-my-mugging.html">The odd case of my mugging</a></li>
<li>2009-Feb-03: <a href="2009-02-03-5-packet-tcp-connection.html">5-packet TCP connection?</a></li>
<li>2006-Feb-13: <a href="2006-02-13-is-sleep-effected-by-time-changes.html">Is sleep(3) effected by time changes?</a></li>

42
markdown/2006-02-26-sctp-part-1.md Normal file
View File

@@ -0,0 +1,42 @@
htmhtmll<!--# set var="title" value="SCTP Part #1" -->
<!--# set var="date" value="February 26, 2006" -->
<!--# include file="include/top.html" -->
I’ve been doing some work with SCTP lately. I’m working through some of the intricacies of the protocol and the brain damage of the APIs (there are two of them, and they both suck). As I write my own API, I thought I’d post a few things here showing, from examples, the nifty stuff that the protocol does. Here’s the first, dealing with message length preservation:
MSG_EOR = 128
IPV6/TCP:
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recv(16, MSG_DONTWAIT) = 16
recv(16, MSG_DONTWAIT) = -1
========
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recvmsg(5, MSG_DONTWAIT) = 5
-----> msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = 11
-----> msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = -1
-----> msg_flags = 0
IPV6/SCTP:
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recv(16, MSG_DONTWAIT) = 8
recv(16, MSG_DONTWAIT) = 8
========
send("ABCDEFGH", 8) = 8
send("01234567", 8) = 8
recvmsg(5, MSG_DONTWAIT) = 5
-----> msg_flags = 0
recvmsg(11, MSG_DONTWAIT) = 3
-----> msg_flags = 128
recvmsg(11, MSG_DONTWAIT) = 8
-----> msg_flags = 128
<!--# include file="include/bottom.html" -->

1
markdown/index.md
View File

@@ -37,6 +37,7 @@
1. 2010-Mar-26: [Fun with map visualizations](2010-03-26-fun-with-map-visualizations.html)
1. 2010-Mar-09: [Karaoke project](2010-03-09-karaoke-project.html)
1. 2009-Sep-11: [Confusing BIND with CNAMEs](2009-09-11-confusing-bind-with-cnames.html)
1. 2009-Feb-26: [SCTP Part #1](2006-02-26-sctp-part-1.html)
1. 2009-Feb-19: [The odd case of my mugging](2019-02-19-the-odd-case-of-my-mugging.html)
1. 2009-Feb-03: [5-packet TCP connection?](2009-02-03-5-packet-tcp-connection.html)
1. 2006-Feb-13: [Is sleep(3) effected by time changes?](2006-02-13-is-sleep-effected-by-time-changes.html)