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GENERAL INFORMATION
A set of turnutils_* programs provides some utility functionality to be used
for testing and for setting up the TURN server.
1. turnutils_uclient: emulates multiple UDP,TCP,TLS or DTLS clients.
(this program is provided for the testing purposes only !)
The compiled binary image of this program is located in bin/
sub-directory.
2. turnutils_peer: a simple stateless UDP-only "echo" server,
to be used as the final server in relay pattern ("peer"). For every incoming
UDP packet, it simply echoes it back.
(this program is provided for the testing purposes only !)
When the test clients are communicating in the client-to-client manner
(when the "turnutils_uclient" program is used with "-y" option) then the
turnutils_peer is not needed.
The compiled binary image of this program is located in bin/ subdirectory.
3. turnutils_stunclient: a simple STUN client example.
The compiled binary image of this program is located in bin/ subdirectory.
4. turnutils_rfc5769check: a utility that checks the correctness of the
STUN/TURN protocol implementation. This utility is used only for the compilation
check procedure, it is not copied to the installation destination.
In the "examples/scripts" subdirectory, you will find the examples of command lines to be used
to run the programs. The scripts are meant to be run from examples/ subdirectory, for example:
$ cd examples
$ ./scripts/secure_relay.sh
=====================================
NAME
turnutils_uclient - this client emulation application is supplied for the test purposes only.
SYNOPSIS
$ turnutils_uclient [-tTSvsyhcxg] [options] <TURN-Server-IP-address>
DESCRIPTION
It was designed to simulate multiple clients. It uses asynch IO API in
libevent to handle multiple clients. A client connects to the relay,
negotiates the session, and sends multiple (configured number) messages to the server (relay),
expecting the same number of replies. The length of the messages is configurable.
The message is an arbitrary octet stream, but it can be configured as a string.
The number of the messages to send is configurable.
Flags:
-t Use TCP for communications between client and TURN server (default is UDP).
-T Use TCP for the relay transport (default - UDP). Implies options -t, -y, -c,
and ignores flags and options -s, -e, -r and -g.
-P Passive TCP (RFC6062 with active peer). Implies -T.
-S Secure SSL connection: SSL/TLS for TCP, DTLS for UDP.
-U Secure unencrypted connection (suite eNULL): SSL/TLS for TCP, DTLS for UDP.
-v Verbose.
-s Use "Send" method in TURN; by default, it uses TURN Channels.
-y Use client-to-client connections:
RTP/RTCP pair of channels to another RTP/RTCP pair of channels.
with this option the turnutils_peer application is not used,
as the allocated relay endpoints are talking to each other.
-h Hang on indefinitely after the last sent packet.
-c Do not create rtcp connections.
-x Request IPv6 relay address (RFC6156).
-X IPv4 relay address explicitly requested.
-g Set DONT_FRAGMENT parameter in TURN requests.
-D Do mandatory channel padding even for UDP (like pjnath).
-N do negative tests (some limited cases only).
-R do negative protocol tests.
-O DOS attack mode.
-H SHA256 digest function for message integrity calculation.
Without this option, by default, SHA1 is used.
-M Use TURN ICE Mobility.
-I Do not set permissions on TURN relay endpoints
(for testing the non-standard server relay functionality).
-G Generate extra requests (create permissions, channel bind).
-B Random disconnect after a few initial packets.
-Z Dual allocation (SSODA draft support).
-J Use oAuth with default test key kid='north'.
Options with required values:
-l Message length (Default: 100 Bytes).
-i Certificate file (for secure connections only, optional).
-k Private key file (for secure connections only).
-E CA file for server certificate verification,
if the server certificate to be verified.
-p TURN Server port (Defaults: 3478 unsecure, 5349 secure).
-n Number of messages to send (Default: 5).
-d Local interface device (optional, Linux only).
-L Local IP address (optional).
-m Number of clients (Default: 1, 2 or 4, depending on options).
-e Peer address.
-r Peer port (Default: 3480).
-z Per-session packet interval in milliseconds (Default: 20).
-u STUN/TURN user name.
-w STUN/TURN user password.
-W TURN REST API authentication secret. Is not compatible with -A flag.
-C This is the timestamp/username separator symbol (character) in
TURN REST API. The default value is :.
-F Cipher suite for TLS/DTLS. Default value is DEFAULT.
-o the ORIGIN STUN attribute value.
-a Bandwidth for the bandwidth request in ALLOCATE. The default value is zero.
See the examples in the "examples/scripts" directory.
======================================
NAME
turnutils_peer - a simple UDP-only echo backend server.
SYNOPSYS
$ turnutils_peer [-v] [options]
DESCRIPTION
This application is used for the test purposes only, as a peer for the turnutils_uclient application.
Options with required values:
-p Listening UDP port (Default: 3480).
-d Listening interface device (optional)
-L Listening address of turnutils_peer server. Multiple listening addresses can be used, IPv4 and IPv6.
If no listener address(es) defined, then it listens on all IPv4 and IPv6 addresses.
-v Verbose
========================================
NAME
turnutils_stunclient - a basic STUN client.
SYNOPSIS
$ turnutils_stunclient [options] <STUN-Server-IP-address>
DESCRIPTION
It sends a "new" STUN RFC 5389 request (over UDP) and shows the reply information.
Options with required values:
-p STUN server port (Default: 3478).
-L Local address to use (optional).
-f Force RFC 5780 processing.
The turnutils_stunclient program checks the results of the first request,
and if it finds that the STUN server supports RFC 5780
(the binding response reveals that) then the turnutils_stunclient makes a couple more
requests with different parameters, to demonstrate the NAT discovery capabilities.
This utility does not support the "old" "classic" STUN protocol (RFC 3489).
=====================================
NAME
turnutils_rfc5769check - a utility that tests the correctness of STUN protocol implementation.
SYNOPSIS
$ turnutils_rfc5769check
DESCRIPTION
turnutils_rfc5769check tests the correctness of STUN protocol implementation
against the test vectors predefined in RFC 5769 and prints the results of the
tests on the screen. This utility is used only for the compilation
check procedure, it is not copied to the installation destination.
Usage:
$ turnutils_rfc5769check
===================================
DOCS
After installation, run the command:
$ man turnutils
or in the project root directory:
$ man -M man turnutils
to see the man page.
=====================================
FILES
/etc/turnserver.conf
/var/db/turndb
/usr/local/var/db/turndb
/var/lib/turn/turndb
/usr/local/etc/turnserver.conf
=================================
DIRECTORIES
/usr/local/share/turnserver
/usr/local/share/doc/turnserver
/usr/local/share/examples/turnserver
===================================
STANDARDS
new STUN RFC 5389
TURN RFC 5766
TURN-TCP extension RFC 6062
TURN IPv6 extension RFC 6156
STUN/TURN test vectors RFC 5769
STUN NAT behavior discovery RFC 5780
====================================
SEE ALSO
turnserver, turnadmin
======================================
WEB RESOURCES
project page:
http://code.google.com/p/coturn/
Wiki page:
http://code.google.com/p/coturn/wiki/Readme
forum:
https://groups.google.com/forum/?fromgroups=#!forum/turn-server-project-rfc5766-turn-server/
======================================
AUTHORS
Oleg Moskalenko <mom040267@gmail.com>
Gabor Kovesdan http://kovesdan.org/
Daniel Pocock http://danielpocock.com/
John Selbie (jselbie@gmail.com)
Lee Sylvester <lee@designrealm.co.uk>
Erik Johnston <erikj@openmarket.com>
Roman Lisagor <roman@demonware.net>
Vladimir Tsanev <tsachev@gmail.com>
Po-sheng Lin <personlin118@gmail.com>
Peter Dunkley <peter.dunkley@acision.com>
Mutsutoshi Yoshimoto <mutsutoshi.yoshimoto@mixi.co.jp>
Federico Pinna <fpinna@vivocha.com>
Bradley T. Hughes <bradleythughes@fastmail.fm>
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