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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "lwip/def.h"
#include "fs.h"
#include "fsdata.h"
#include "fsdata.c"
/*-----------------------------------------------------------------------------------*/
/*-----------------------------------------------------------------------------------*/
int
fs_open(char *name, struct fs_file *file)
{
struct fsdata_file_noconst *f;
for(f = (struct fsdata_file_noconst *)FS_ROOT; f != NULL; f = (struct fsdata_file_noconst *)f->next) {
if(!strcmp(name, f->name)) {
file->data = f->data;
file->len = f->len;
return 1;
}
}
return 0;
}
/*-----------------------------------------------------------------------------------*/

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __FS_H__
#define __FS_H__
struct fs_file {
char *data;
int len;
};
/* file must be allocated by caller and will be filled in
by the function. */
int fs_open(char *name, struct fs_file *file);
#endif /* __FS_H__ */

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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - Documentation</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
[Documentation]
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr>
<tr>
<td><center><h2>Documentation</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
<ul>
<li><a href="os.html">Using lwIP with and without an operating
system</a>.
<br><br>
<li>The lwIP source archive contains documentation on how to port lwIP
and how to write applications using the native API. They can also be
found here: <a href="doc/sys_arch.txt">sys_arch.txt</a>, <a
href="doc/rawapi.txt">rawapi.txt</a>.
<br><br>
<li>Selected messages from the mailinglist: <a
href="maillist/msg00231.html">lwIP memory buffers and allocators</a>,
<a href="maillist/msg00227.html">Threads, semaphores and raw interface
question</a>, <a href="maillist/msg00242.html">Threads, semaphores and
raw interface question [2]</a>. <a href="maillist/msg00460.html">Some notes on using lwIP with the development enviroment ADS
1.1 from ARM.</a>
<br><br>
<li>A report describing the design and implementation of an old
version of lwIP. The algorithms and data structures used both in the
protocol implementations and in the sub systems such as the memory and
buffer management systems are described. Also included in this report
is a reference manual for the lwIP sequential API and some code
examples of using lwIP. <a href="doc/lwip.pdf">PDF</a>, <a
href="doc/lwip.ps.gz">.ps.gz</a>.
<br><br>
<li>Slides from a presentation that talks a bit about lwIP: <a
href="doc/pres.pdf">PDF</a> (86k), <a href="doc/pres.ps.gz">.ps.gz</a>
(36k).
</ul>
<p align="justify">
For more documentation regarding lwIP and a proxy architecture to
support TCP/IP communication for small clients, look in <a
href="/~adam/publications.html">Adam Dunkels' masters thesis</a>.
</p>
<p align="justify">
The <a href="mailinglist.html">lwIP mailing list</a> can be used to
discuss lwIP.
</p>
<p align="justify">
For questions or suggestions, please contact the author at <a
href="mailto:Adam Dunkels <adam@sics.se>">Adam Dunkels
&lt;adam@sics.se&gt;</a>.
</p>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:01 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
[Documentation]
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - Download</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
[Download]
|
<a href="links.html">Links</a>
<hr>
</td></tr>
<tr>
<td><center><h2>Download</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
<p align="justify">
lwIP is avaliable for download provided that you read and accept <a
href="licence.html">this</a> BSD-style license.
</p>
<h3>Release versions</h3>
<p align="justify">
The latest version is 0.5.3. (Older versions are also provided for an
unknown reason.)
</p>
<ul>
<li>Version 0.5.3 (latest): <a
href="download/?f=lwip-0.5.3.tar.gz">lwip-0.5.3.tar.gz</a>
<br><br>
<li>
<font size="-2">
Obsolete versions: <a
href="download/?f=lwip-0.5.2.tar.gz">lwip-0.5.2.tar.gz</a>
<a
href="download/?f=lwip-0.5.1.tar.gz">lwip-0.5.1.tar.gz</a>
<a
href="download/?f=lwip-0.5.0.tar.gz">lwip-0.5.0.tar.gz</a>
<a
href="download/?f=lwip-0.4.2.tar.gz">lwip-0.4.2.tar.gz</a>
<a
href="download/?f=lwip-0.4.1.tar.gz">lwip-0.4.1.tar.gz</a>
<a
href="download/?f=lwip-0.4.tar.gz">lwip-0.4.tar.gz</a>
<a
href="download/?f=lwip-0.3.1.tar.gz">lwip-0.3.1.tar.gz</a>
<a
href="download/?f=lwip-0.3.tar.gz">lwip-0.3.tar.gz</a>
<a
href="download/?f=lwip-0.2.tar.gz">lwip-0.2.tar.gz</a>
</font>
<br>
</ul>
<h3>Development version</h3>
<p align="justify">
The latest development code from the CVS is also avaliable <a
href="download/?f=lwip-cvs.tar.gz">here</a>. Note that this code may
very well be unstable and might not even compile.
</p>
<h3>Source code online</h3>
<p align="justify">
Joe MacDonald has put an HTML version of the latest lwIP source code
online at <a
href="http://www.deserted.net/lwIP/">http://www.deserted.net/lwIP/</a>.
</p>
<h3>Ports</h3>
<p align="justify">
Florian Shulze has ported lwIP to DJGPP/MS-DOS and to Visual C++
6.0/Win32. They can be downloaded <a
href="http://homepages.fh-giessen.de/~hg10836/dev/djgpp/lwipdjgpptest-0.1.zip">here</a>
(DJGPP/MS-DOS) and <a
href="http://homepages.fh-giessen.de/~hg10836/crowproductions/dev/lwip-win32-msvc-0.1.zip">here</a>
(Visual C++ 6.0/Win32).
</p>
<h3>Add-ons/drivers/applications</h3>
<h4>DHCP client</h4>
<p align="justify">
Leon Woestenberg from Axon Digital Design B.V. has written a CS8900a
network interface driver and is currently developing a DHCP client for
lwIP. They can both be found <a
href="http://www.esrac.ele.tue.nl/~leon/lwip/">here</a>. The plan is
to eventually integrate Leon's DHCP client in the main lwIP
distribution.
</p>
<h4>IGMPv2 implementation</h4>
<p align="justify">
Steve Reynolds of Citel Technologies Ltd. has donated his IGMPv2
implementation for lwIP to the community. It is avaliable for download
<a href="download/igmpfiles.zip">here</a> (note that the copyright and
license differs slightly from lwIP - read the license in the igmp.c
file). The plan is to integrate his code into the main lwIP
distribution.
</p>
<h4>Alternative BSD socket layer</h4>
<p align="justify">
Paul Sheer has incorporated lwIP into his PaulOS system and has
written an alternative BSD socket layer. It is avaliable for download
<a href="download/bsdsocket.c">here</a>. It is copyright Paul Sheer
and licensed under the <a
href="http://www.gnu.org/licenses/gpl.html">GNU GPL</a>.
</p>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:06 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
[Download]
|
<a href="links.html">Links</a>
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - lwIP source code licence</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr>
<tr>
<td><center><h2>lwIP source code licence</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
Copyright (c) 2001, Swedish Institute of Computer Science.
All rights reserved.<br>
<br>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:<br>
<ol>
<li> Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.<br>
<br>
<li> Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the
distribution.<br>
<br>
<li> Neither the name of the Institute nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission. <br>
</ol>
<br>
THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS `AS IS' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE. <br>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:01 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - Links</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
[Links]
<hr>
</td></tr>
<tr>
<td><center><h2>Links</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
lwIP pages:
<ul>
<li><a href="http://www.esrac.ele.tue.nl/~leon/lwip/">Leon Woestenberg's lwIP page</a>
</ul>
Companies using lwIP in their products:
<ul>
<li>UK based <a href="http://www.tangentdevices.co.uk/">Tangent Devices Ltd</a> are incorporating lwIP in their film
and video post-production equipment.
<li><a href="http://www.axon.tv">Axon Digital Design BV</a> in The
Netherlands is merging lwIP with their current IP stack for use in the
Synapse modular broadcasting system.
</ul>
Projects using lwIP:
<ul>
<li><a href="http://www.cdt.luth.se/projects/arena/">The ARENA Project</a> - Hockey players equipped with pulse and breathing sensors running lwIP.<br>
<li><a href="http://bart.sm.luth.se/eis2001/">The Embedded Internet Systems 2001 Student Project</a> - Flow meter and belt tension sensors
running lwIP.<br>
<li><a href="http://dcdev.allusion.net/">KOS</a> - The KOS operating system for
Sega Dreamcast uses lwIP.<br>
</ul>
Other small TCP/IP implementations:
<ul>
<li><a href="http://dunkels.com/adam/uip/">uIP</a> - A very small TCP/IP
implementation, suitable for systems with hundreds of bytes free RAM
and a few kilobytes of free code space.<br>
<li><a href="http://ucip.sourceforge.net/">uC/IP</a> - uC/IP is a BSD-based
TCP/IP protocol stack for microcontrollers.<br>
<li><a href="http://liquorice.sourceforge.net">Liquorice</a> - Liquorice
includes a TCP/IP stack.<br>
<li><a href="http://www.nenie.org/cpcip/">CPC/IP</a> - A TCP/IP stack for
Amstrad CPCs.<br>
<li><a href="http://lng.sourceforge.net/">LUnix</a> - LUnix contains a small
TCP/IP stack.<br>
<li><a href="http://www.sweetcherrie.com/jolz64/jos/">JOS</a> - JOS includes a
TCP/IP implementation.<br>
<li><a href="http://www.csonline.net/bpaddock/tinytcp/default.htm">TinyTCP</a> - A very slim
TCP, IP, and FTP implementation.<br>
<li><a href="http://kyllikki.fluff.org/hardware/wwwpic2/">WWWpic2</a> - Small
HTTP/TCP/IP implementation for a PIC.<br>
<li><a href="http://www.rmbeales.fsnet.co.uk/files/html/picserver/picservd.htm">PIC Web Server</a> - Small HTTP/TCP/IP/SLIP PIC implementation.<br>
</ul>
Very small web servers:
<ul>
<li><a href="http://world.std.com/~fwhite/ace/">webACE</a> - World's Smallest
Web Server.<br>
<li><a href="http://www-ccs.cs.umass.edu/~shri/iPic.html">iPIC</a> - A Match
Head Sized Web Server.<br>
</ul>
Related RFCs:
<ul>
<li>J. Postel, <a
href="ftp://ftp.ietf.org/rfc/rfc791.txt">Internet Protocol</a>, RFC791, September 1981.
<li>J. Postel, <a
href="ftp://ftp.ietf.org/rfc/rfc792.txt">Internet Control Message Protocol</a>, RFC792, September 1981.
<li>J. Postel, <a
href="ftp://ftp.ietf.org/rfc/rfc768.txt">User Datagram Protocol</a>, RFC768, August 1980.
<li>J. Postel, <a
href="ftp://ftp.ietf.org/rfc/rfc793.txt">Transmission Control Protocol</a>, RFC793, September 1981.
<li>D. D. Clark, <a
href="ftp://ftp.ietf.org/rfc/rfc813.txt">Window and Acknowledgement Strategy in TCP</a>, RFC813, July 1982.
<li>D. D. Clark, <a
href="ftp://ftp.ietf.org/rfc/rfc817.txt">Modularity and Efficiency in Protocol Implementation</a>, RFC817, July 1982.
<li>R. Braden, <a
href="ftp://ftp.ietf.org/rfc/rfc1122.txt">Requirements for Internet Hosts -- Communication Layers</a>, RFC1122, October 1989.
<li>T. Mallory and A. Kullberg, <a
href="ftp://ftp.ietf.org/rfc/rfc1141.txt">Incremental Updating of the Internet Checksum</a>, RFC1141, January 1990.
<li>A. Rijsinghani, <a
href="ftp://ftp.ietf.org/rfc/rfc1624.txt">Computation of the Internet Checksum via Incremental Update</a>, RFC1624, May 1994.
<li>R. Braden, <a
href="ftp://ftp.ietf.org/rfc/rfc1337.txt">TIME-WAIT Assasination Hazards in TCP</a>, RFC1337, May 1992.
<li>B. Carpenter, <a
href="ftp://ftp.ietf.org/rfc/rfc1958.txt">Architectural Principles of the Internet</a>, RFC1958, June 1996.
<li>M. Allman, V. Paxson and W. Stevens, <a
href="ftp://ftp.ietf.org/rfc/rfc2581.txt">TCP Congestion Control</a>, RFC2581, April 1999.
<li>S. Parker and C. Schmechel, <a
href="ftp://ftp.ietf.org/rfc/rfc2398.txt">Some Testing Tools for TCP Implementors</a>, RFC2398, August 1998.
</ul>
Related publications:
<ul>
<li>V. Jacobson. Congestion avoidance and control. In <i>Proceedings of
the SIGCOMM '88 Conference</i>, Stanford, California, August 1988.
<li>V. Jacobson. 4.3BSD TCP header prediction. <i>ACM Computer
Communications Review</i>, 20(2), April 1990.
<li>P. Karn and C. Partridge. Improving round-trip time estimates
in reliablie transport protocols. In <i>Proceedings of the SIGCOMM '87
Conference</i>, Stowe, Vermont, August 1987.
<li>J. Kay and J. Pasquale. Profiling and Reducing Processing
Overheads in TCP/IP. <i>IEEE/ACM Transactions of Networking</i>, 4(6), December 1996.
<li>L. Larzon, M. Degermark, and S. Pink. UDP Lite for
real-time multimedia applications. In <i>Proceedings of the IEEE
International Conference of Communications</i>, Vancouver, British
Columbia, Canada, June 1999.
<li>P. E. McKenney and K. F. Dove. Efcient demultiplexing of
incoming TCP packets. In <i>Proceedings of the SIGCOMM '92 Conference</i>, Baltimore, Maryland, August 1992.
<li>C. Partridge and S. Pink. A faster UDP. <i>IEEE/ACM Transactions
in Networking</i>, 1(4), August 1993.
</ul>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:02 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
[Links]
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

187
proj/unixsim/apps/fs/mailinglist.html Normal file
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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - Mailing list</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
[Mailing list]
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr>
<tr>
<td><center><h2>Mailing list</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
<p align="justify">
The lwIP mailing list is the place to discuss lwIP. All topics related
to lwIP, such as porting or using lwIP, writing device drivers or
application programs for lwIP can be discussed here.
</p>
<h3>Archives</h3>
<p align="justify">
Archives can be found <a href="maillist/">here</a>.
</p>
<h3>Subscribe</h3>
<p align="justify">
To subscribe, send a mail to <a
href="mailto:majordomo@sics.se">majordomo@sics.se</a> with the message
<pre>
subscribe lwip
</pre>
in the message body. The subject should be kept blank.
</p>
<p align="justify">
In a few minutes, you should receive a welcome message and some
information regarding the subscription, including instructions for
unsubscribing. Save those messages for future reference.
</p>
<p align="justify">
You are now an lwIP mailing list subscriber!
</p>
<h3>Post</h3>
<p align="justify">
Posting to the lwIP mailing list is a simple as sending a mail to the
address <a href="mailto:lwip@sics.se">lwip@sics.se</a>.
</p>
<h3>Unsubscribe</h3>
<p align="justify">
To subscribe, send a mail to <a
href="mailto:majordomo@sics.se">majordomo@sics.se</a> with the message
<pre>
unsubscribe lwip
</pre>
in the message body. The subject should be kept blank.
</p>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:02 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
[Mailing list]
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

225
proj/unixsim/apps/fs/os.html Normal file
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<html>
<head><title>lwIP - A Lightweight TCP/IP Stack - OS vs non-OS</title></head>
<body bgcolor="white">
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td>
<center><h1>lwIP - A Lightweight TCP/IP Stack</h1></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr>
<tr>
<td><center><h2>OS vs non-OS</h2></center>
</td></tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0"><tr>
<td width="50">
&nbsp;
</td>
<td bgcolor="white" width="540">
<h2>Using lwIP with or without an operating system</h2>
<p align="justify">
There has been a few questions about how lwIP can be used in a
standalone environment (i.e., an environment without a multi-threaded
operating system) lately. The purpose of this document is to describe
how lwIP is designed to be used with and without a multi-threaded
operating system.
</p>
<center><img src="os.png"></center>
<h3>The lwIP single-threaded core</h3>
<p align="justify">
The core of lwIP consists of the actual implementations of the IP,
ICMP, UDP, and TCP protocols, as well as the support functions such as
buffer and memory management. The core components are the only ones
that are needed when lwIP is to be run in a single-threaded (non-OS)
environment.
</p>
<p align="justify">
The core components can be viewed as a software library which has the
following interface:
</p>
<ul>
<li><tt>ip_input(pbuf, netif)</tt>: Takes an IP packet and the incoming network
interface as arguments and does the TCP/IP processing for the packet.
<li><tt>tcp_tmr()</tt>: Should be called every 100 ms. Does all TCP
timer processing such as doing retransmissions.
</ul>
<p align="justify">
Because none of the core functions ever needs to block when run in a
single-threaded environment, the <tt>sys_arch</tt> (the operating
system abstraction layer) does not need to implement locking
semaphores or mailboxes. In future versions of lwIP, the dependancy of
the <tt>sys_arch</tt> will be removed in the single-threaded case.
</p>
<p align="justify">
A simple main loop for a single-threaded system might look
like this:
</p>
<pre>
while(1) {
if(poll_driver(netif) == PACKET_READY) {
pbuf = get_packet(netif);
ip_input(pbuf, netif);
}
if(clock() - last_time == 100 * CLOCK_MS) {
tcp_tmr();
last_time = clock();
}
}
</pre>
<h3>lwIP in a multi-threaded system</h3>
<p align="justify">
lwIP is designed to be able to be run in a multi-threaded system with
applications running in concurrent threads. The model used in this
case is that all TCP/IP processing is done in a single thread. The
application thread communicate with the TCP/IP thread using the
sequential API.
</p>
<center><img src="threads.png"></center>
<p align="justify">
The inter-thread communication is implemented in the two files
<tt>api_lib.c</tt> and <tt>api_msg.c</tt>. The former contains the
functions used by the application programs and the latter implements
the TCP/IP stack interface. A third file, <tt>tcpip.c</tt>, handles
incoming packets and timer events as described in the previous
section.
</p>
<p align="justify">
When run in a multi-threaded environment, incoming packets are handled
by the function <tt>tcpip_input()</tt>, which takes the same arguments
as the <tt>ip_input()</tt> function. The difference between the two
functions is that the <tt>tcpip_input()</tt> function does not process
the incoming packet immediately. It merely puts the packet on a queue
which later is drained by the TCP/IP thread.
</p>
<p align="justify">
When being run in a multi-threaded system, timer events are taken care
of internally in <tt>tcpip.c</tt>.
</p>
<p align="right">
<font size="-1"><i>
$Date: 2002/10/19 13:00:03 $
</i></font>
</p>
</td>
<td width="50">
&nbsp;
</td>
</tr></table>
<table width="640" border="0" cellpadding="0"
cellspacing="0">
<tr><td align="center">
<hr>
<a href="index.html">Introduction</a>
|
<a href="news.html">News</a>
|
<a href="documentation.html">Documentation</a>
|
<a href="mailinglist.html">Mailing list</a>
|
<a href="changelog.html">Changelog</a>
|
<a href="download.html">Download</a>
|
<a href="links.html">Links</a>
<hr>
</td></tr><tr>
<td>
<div align="right">
<a href="http://www.sics.se/~adam/">Adam Dunkels</a></div>
</td>
</tr>
</table>
</body>
</html>

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4188
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proj/unixsim/apps/fsdata.h Normal file
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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __FSDATA_H__
#define __FSDATA_H__
struct fsdata_file {
const struct fsdata_file *next;
const char *name;
const char *data;
const int len;
};
struct fsdata_file_noconst {
struct fsdata_file *next;
char *name;
char *data;
int len;
};
#endif /* __FSDATA_H__ */

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "lwip/debug.h"
#include "lwip/stats.h"
#include "httpd.h"
#include "lwip/tcp.h"
#include "fs.h"
struct http_state {
char *file;
u32_t left;
u8_t retries;
};
/*-----------------------------------------------------------------------------------*/
static void
conn_err(void *arg, err_t err)
{
struct http_state *hs;
hs = arg;
mem_free(hs);
}
/*-----------------------------------------------------------------------------------*/
static void
close_conn(struct tcp_pcb *pcb, struct http_state *hs)
{
tcp_arg(pcb, NULL);
tcp_sent(pcb, NULL);
tcp_recv(pcb, NULL);
mem_free(hs);
tcp_close(pcb);
}
/*-----------------------------------------------------------------------------------*/
static void
send_data(struct tcp_pcb *pcb, struct http_state *hs)
{
err_t err;
u16_t len;
/* We cannot send more data than space avaliable in the send
buffer. */
if(tcp_sndbuf(pcb) < hs->left) {
len = tcp_sndbuf(pcb);
} else {
len = hs->left;
}
do {
err = tcp_write(pcb, hs->file, len, 0);
if(err == ERR_MEM) {
len /= 2;
}
} while(err == ERR_MEM && len > 1);
if(err == ERR_OK) {
hs->file += len;
hs->left -= len;
/* } else {
printf("send_data: error %s len %d %d\n", lwip_strerr(err), len, tcp_sndbuf(pcb));*/
}
}
/*-----------------------------------------------------------------------------------*/
static err_t
http_poll(void *arg, struct tcp_pcb *pcb)
{
struct http_state *hs;
hs = arg;
/* printf("Polll\n");*/
if(hs == NULL) {
/* printf("Null, close\n");*/
tcp_abort(pcb);
return ERR_ABRT;
} else {
++hs->retries;
if(hs->retries == 4) {
tcp_abort(pcb);
return ERR_ABRT;
}
send_data(pcb, hs);
}
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
static err_t
http_sent(void *arg, struct tcp_pcb *pcb, u16_t len)
{
struct http_state *hs;
hs = arg;
hs->retries = 0;
if(hs->left > 0) {
send_data(pcb, hs);
} else {
close_conn(pcb, hs);
}
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
static err_t
http_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
{
int i;
char *data;
struct fs_file file;
struct http_state *hs;
hs = arg;
if(err == ERR_OK && p != NULL) {
/* Inform TCP that we have taken the data. */
tcp_recved(pcb, p->tot_len);
if(hs->file == NULL) {
data = p->payload;
if(strncmp(data, "GET ", 4) == 0) {
for(i = 0; i < 40; i++) {
if(((char *)data + 4)[i] == ' ' ||
((char *)data + 4)[i] == '\r' ||
((char *)data + 4)[i] == '\n') {
((char *)data + 4)[i] = 0;
}
}
if(*(char *)(data + 4) == '/' &&
*(char *)(data + 5) == 0) {
fs_open("/index.html", &file);
} else if(!fs_open((char *)data + 4, &file)) {
fs_open("/404.html", &file);
}
hs->file = file.data;
hs->left = file.len;
/* printf("data %p len %ld\n", hs->file, hs->left);*/
pbuf_free(p);
send_data(pcb, hs);
/* Tell TCP that we wish be to informed of data that has been
successfully sent by a call to the http_sent() function. */
tcp_sent(pcb, http_sent);
} else {
pbuf_free(p);
close_conn(pcb, hs);
}
} else {
pbuf_free(p);
}
}
if(err == ERR_OK && p == NULL) {
close_conn(pcb, hs);
}
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
static err_t
http_accept(void *arg, struct tcp_pcb *pcb, err_t err)
{
struct http_state *hs;
tcp_setprio(pcb, TCP_PRIO_MIN);
/* Allocate memory for the structure that holds the state of the
connection. */
hs = mem_malloc(sizeof(struct http_state));
if(hs == NULL) {
printf("http_accept: Out of memory\n");
return ERR_MEM;
}
/* Initialize the structure. */
hs->file = NULL;
hs->left = 0;
hs->retries = 0;
/* Tell TCP that this is the structure we wish to be passed for our
callbacks. */
tcp_arg(pcb, hs);
/* Tell TCP that we wish to be informed of incoming data by a call
to the http_recv() function. */
tcp_recv(pcb, http_recv);
tcp_err(pcb, conn_err);
tcp_poll(pcb, http_poll, 4);
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
void
httpd_init(void)
{
struct tcp_pcb *pcb;
pcb = tcp_new();
tcp_bind(pcb, IP_ADDR_ANY, 80);
pcb = tcp_listen(pcb);
tcp_accept(pcb, http_accept);
}
/*-----------------------------------------------------------------------------------*/

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __HTTPD_H__
#define __HTTPD_H__
void httpd_init(void);
#endif /* __HTTPD_H__ */

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#!/usr/bin/perl
open(OUTPUT, "> fsdata.c");
chdir("fs");
open(FILES, "find . -type f |");
while($file = <FILES>) {
# Do not include files in CVS directories nor backup files.
if($file =~ /(CVS|~)/) {
next;
}
chop($file);
open(HEADER, "> /tmp/header") || die $!;
if($file =~ /404/) {
print(HEADER "HTTP/1.0 404 File not found\r\n");
} else {
print(HEADER "HTTP/1.0 200 OK\r\n");
}
print(HEADER "Server: lwIP/pre-0.6 (http://www.sics.se/~adam/lwip/)\r\n");
if($file =~ /\.html$/) {
print(HEADER "Content-type: text/html\r\n");
} elsif($file =~ /\.gif$/) {
print(HEADER "Content-type: image/gif\r\n");
} elsif($file =~ /\.png$/) {
print(HEADER "Content-type: image/png\r\n");
} elsif($file =~ /\.jpg$/) {
print(HEADER "Content-type: image/jpeg\r\n");
} elsif($file =~ /\.class$/) {
print(HEADER "Content-type: application/octet-stream\r\n");
} elsif($file =~ /\.ram$/) {
print(HEADER "Content-type: audio/x-pn-realaudio\r\n");
} else {
print(HEADER "Content-type: text/plain\r\n");
}
print(HEADER "\r\n");
close(HEADER);
unless($file =~ /\.plain$/ || $file =~ /cgi/) {
system("cat /tmp/header $file > /tmp/file");
} else {
system("cp $file /tmp/file");
}
open(FILE, "/tmp/file");
unlink("/tmp/file");
unlink("/tmp/header");
$file =~ s/\.//;
$fvar = $file;
$fvar =~ s-/-_-g;
$fvar =~ s-\.-_-g;
print(OUTPUT "static const char data".$fvar."[] = {\n");
print(OUTPUT "\t/* $file */\n\t");
for($j = 0; $j < length($file); $j++) {
printf(OUTPUT "%#02x, ", unpack("C", substr($file, $j, 1)));
}
printf(OUTPUT "0,\n");
$i = 0;
while(read(FILE, $data, 1)) {
if($i == 0) {
print(OUTPUT "\t");
}
printf(OUTPUT "%#02x, ", unpack("C", $data));
$i++;
if($i == 10) {
print(OUTPUT "\n");
$i = 0;
}
}
print(OUTPUT "};\n\n");
close(FILE);
push(@fvars, $fvar);
push(@files, $file);
}
for($i = 0; $i < @fvars; $i++) {
$file = $files[$i];
$fvar = $fvars[$i];
if($i == 0) {
$prevfile = "NULL";
} else {
$prevfile = "file" . $fvars[$i - 1];
}
print(OUTPUT "const struct fsdata_file file".$fvar."[] = {{$prevfile, data$fvar, ");
print(OUTPUT "data$fvar + ". (length($file) + 1) .", ");
print(OUTPUT "sizeof(data$fvar) - ". (length($file) + 1) ."}};\n\n");
}
print(OUTPUT "#define FS_ROOT file$fvars[$i - 1]\n\n");
print(OUTPUT "#define FS_NUMFILES $i");

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __SHELL_H__
#define __SHELL_H__
void shell_init(void);
#endif /* __SHELL_H__ */

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "lwip/sys.h"
#include "lwip/api.h"
/*-----------------------------------------------------------------------------------*/
static void
tcpecho_thread(void *arg)
{
struct netconn *conn, *newconn;
err_t err;
/* Create a new connection identifier. */
conn = netconn_new(NETCONN_TCP);
/* Bind connection to well known port number 7. */
netconn_bind(conn, NULL, 7);
/* Tell connection to go into listening mode. */
netconn_listen(conn);
while(1) {
/* Grab new connection. */
newconn = netconn_accept(conn);
/*printf("accepted new connection %p\n", newconn);*/
/* Process the new connection. */
if(newconn != NULL) {
struct netbuf *buf;
void *data;
u16_t len;
while((buf = netconn_recv(newconn)) != NULL) {
/*printf("Recved\n");*/
do {
netbuf_data(buf, &data, &len);
err = netconn_write(newconn, data, len, NETCONN_COPY);
if(err != ERR_OK) {
/* printf("tcpecho: netconn_write: error \"%s\"\n", lwip_strerr(err));*/
}
} while(netbuf_next(buf) >= 0);
netbuf_delete(buf);
}
/*printf("Got EOF, looping\n");*/
/* Close connection and discard connection identifier. */
netconn_delete(newconn);
}
}
}
/*-----------------------------------------------------------------------------------*/
void
tcpecho_init(void)
{
sys_thread_new(tcpecho_thread, NULL);
}
/*-----------------------------------------------------------------------------------*/

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __TCPECHO_H__
#define __TCPECHO_H__
void tcpecho_init(void);
#endif /* __TCPECHO_H__ */

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "lwip/api.h"
#include "lwip/sys.h"
/*-----------------------------------------------------------------------------------*/
void
udpecho_thread(void *arg)
{
static struct netconn *conn;
static struct netbuf *buf;
static struct ip_addr *addr;
static unsigned short port;
char buffer[4096];
conn = netconn_new(NETCONN_UDP);
netconn_bind(conn, NULL, 7);
while(1) {
buf = netconn_recv(conn);
addr = netbuf_fromaddr(buf);
port = netbuf_fromport(buf);
netconn_connect(conn, addr, port);
netconn_send(conn, buf);
netbuf_copy(buf, buffer, sizeof(buffer));
printf("got %s\n", buffer);
netbuf_delete(buf);
}
}
/*-----------------------------------------------------------------------------------*/
void
udpecho_init(void)
{
sys_thread_new(udpecho_thread, NULL);
}

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/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#ifndef __UDPECHO_H__
#define __UDPECHO_H__
void udpecho_init(void);
#endif /* __UDPECHO_H__ */