TrafGen

Functions

Command Mode

• Running mode:
• snd, rcv, sndrcv (UDP)
• HTTP, RTP, mCastRcv
• The type of traffic:
• constant (by default)
• poisson, mpareto
• Options:
• lport - dport - peer - size- dgramperiod - loop - stateperiod - tos
• slip by (file containing the list of URL for HTTP, URL towards the multi-media source for RTP).

• size=datagram size in bytes (1024)
• peer=address or hostname of the peer (127.0.0.1)
• dport=peer  port (1048)
• lport=local port (1048)
• dgramperiod=period for sending datagrams in milliseconds (0 for continuous emission)
• stateperiod=statistics periodicity (in seconds)
• file=file containing a list of urls (HTTP) 
• loop=emission loops, 0: infinite loop, (1 000 000)
• tos=type of service 
• ttl=time to live (1: only for multicast)
• poisson=poisson mean
• mpareto=pareto scale:pareto shape:poisson mean
  

java -cp trafGen.jar TrafGen size=1024 dport=1048 loop=100 peer=157.159.100.129 stateperiod=1000 mode=sndrcv mpareto=30:1.5:100

java -cp trafGen.jar TrafGen mode=rtp file=file:///C:/vincent/java/TrafGen/test/pv.mp3 dport=9998 peer=157.159.103.62 loop=10 stateperiod=50000

Interactive mode (Swing)

• localPort (which indicates the local port),
• distPort and @ipDest ,
• dgramSize indicates the size of the emitted datagrams,
• Period indicates the duration in milliseconds which separates two emissions. Period with 0 is synonymous with permanent emission.
• Loop indicates the iteration count to be carried out, with 0 in this fields nbLoop is put at 10**9.
• tos indicates the value of the field tos,
• ttl indicates the value of the field ttl,
• sendBuf and recvBuf indicate the size of the plugs of emission and of reception, with 0, the standard value is maintained.
• sendPrio and recvPrio indicate the priority of the threads of emission and of reception, with 0, the standard value is maintained.
• savPeriod indicates the duration in milliseconds between two safeguards of the meters.
• The parameters specific to the models of traffic are described in the previous section.
  

< SndUdp, RcvUdp >, < SndTcp, RcvSrvTcp > launch send-receives.
In local loop the sockets must be cross: ex:

• snd: portLocal:1048, portDistant:1049
• rcv: portLocal:1049, portDistant:1048.

< rcvState >, < sndState > give the average of the traffic.
< resetRcv >, < resetSnd > put the statistics to zero.
< pingLoop > and < count > are specific to UDP.
< pingLoop > sends a message nbLoop time to measure the RTT.
< pingLoop > measures RTT in UDP mode.

Ex: pingLoop
udpSnd port 1048 ===> port 1049 udpRcv
udpRcv < = = = reply

< count > request the value of the meter of datagrams to the distant correspondent, it goes only with one transmitter "udpDuplex" (able to emit and receive on same the socket).
< aleaSend > sends in a random way to a mailing list IP, employed to create conflicts on a switch while launching trafGen from several stations.
< SndMcast, RcvMcast > launches emissions - receptions on multicast addresses. SndMcast reads the fields "port source" and RcvMcast reads the fields "port destination". For a same session, the 2 port numbers need to be identical.

< sav > save the statistics of the active tasks, the period of saving is specified in seconds.
< HTTP > generates HTTP requests, the list of URLs is in a text file chosen by the user.
< DNS > generates DNS requests, the list of domain names is in a text file chosen by the user.
< duplexUdp > allows full duplex communication in UDP.
< duplexTcp > allows full duplexcommunication in TCP.
< ThreadsList > gives the list of the active threads with their level of priority.
< ThreadsStop > stops all the threads.

For any question: pierre dot vincent at int-evry dot fr