rttExplorer is a python-based tool to meassure round-trip-times (RTT) over Internet Paths. rttExplorer is based on Scamper and Tracebox. Tracebox is used to reveal paths through IPv4 targets; and Scamper is used to meassure the rtt to each hop revealed by tracebox.
rttExplorer also allows to make periodic meassurements over the Internet Path, i. e., given a IPv4 target, the path is discovered every path Interval, then the RTT is meassured to each revealed hop every RTT Interval. Both probes (path discovery and rtt measurements) are generated with identical flow id in order to assure uniqueness in the forward path. At the moment, it supports UDP and TCP-ACK probes. However, is prety easy to add new probes in the code.
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Python3 or greater.
-
Pymongo library.
sudo pip3 install pymongo -
Scamper cvs-20180504 or greater. Download from the source and build it.
wget https://www.caida.org/tools/measurement/scamper/code/scamper-cvs-20180504.tar.gz tar -xzf scamper-cvs-20180504.tar.gz cd scamper-cvs-20180504/ sudo ./configure sudo make sudo make install -
Tracebox v0.4.4 or greater. Download from the source and build it.
sudo apt-get install autotools-dev autoconf automake libtool lua5.2 liblua5.2-dev lua5.2-doc libpcap-dev libjson-c-dev libcurl4-gnutls-dev libnetfilter-queue-dev git clone https://github.com/tracebox/tracebox.git cd tracebox sudo ./bootstrap.sh sudo ./configure sudo make sudo make install
Just clone or download the latest version of rttExplorer
git clone https://github.com/gdavila/rttExplorer.git
Go to the folder rttExplorer and use it!
cd rttExplorer/
sudo python3 rttExplorer.py -h
Important: rttExplorer require sudo privileges
$ sudo python3 rttExplorer.py -h
usage: rttExplorer [-h] (-i ipTarget | -I inputTargetFile) -t explorationTime
[-D pathInterval] [-T rttInterval] [-m method] [-f firstTTL]
[-M maxTTL] [-d dstPort] [-s srcPort] [-o outFile] [--mongodb]
script to measure the rrt along a path
optional arguments:
-h, --help show this help message and exit
required arguments::
-i ipTarget IPv4 target
-I inputTargetFile input file with a list of IPv4 targets line by line
-t explorationTime Duration time of the exploration (minutes)
optional arguments::
-D pathInterval time interval between path discovery probes (minutes).
Default is 5
-T rttInterval time interval between rtt measurement probes (seconds).
Default is 1
-m method UDP or TCP-ACK. Default is UDP
-f firstTTL ttl for the first hop used in traceroute. Default is 1
-M maxTTL max ttl used in traceroute. Default is 20
-d dstPort destination Port. Default is 44444
-s srcPort source Port. Default is 33333
-o outFile File name to save the results (exploration name)
--mongodb upload the results in a mongoDB. See defaults.py to
change the default mongodb uri
mongo.py file includes the settings required to set the mongo database where the results can be stored. Otherwise, results are saved locally in json format in results/ folder. By default a mlab free-sandbox is used as mongo database.
The mongodb is based on two collections:
- path Collection: includes each hop revealed through tracebox. Each document has the following format:
{
"_id": {
"$oid": "5a794ce874fece0dc2c5fc91"
},
"method": "tcp-ack",
"dst": "181.30.134.83",
"dport": "44444",
"type": "tracebox",
"Hops": [
{
"delay": 14102,
"hop": 6,
"from": "200.89.161.118",
"Modifications": [
{
"IP::ExpCongestionNot": {
"Expected": "0",
"Received": "3"
}
},
{
"IP::TTL": {
"Expected": "6",
"Received": "1"
}
},
{
"IP::CheckSum": {
"Expected": "0x825a",
"Received": "0x8757"
}
}
],
"Additions": [
{
"PartialTCP": {
"Info": "< PartialTCP (8 bytes) :: SrcPort = 33335 , DstPort = 44444 , SeqNumber = 1351198137 , >\n"
}
}
],
"name": "118-161-89-200.fibertel.com.ar",
"Deletions": []
},
{
"delay": 37541,
"hop": 7,
"from": "181.30.134.83",
"Modifications": [
{
"TCP::SrcPort": {
"Expected": "33335",
"Received": "44444"
}
},
{
"TCP::DstPort": {
"Expected": "44444",
"Received": "33335"
}
},
{
"TCP::SeqNumber": {
"Expected": "1351198137",
"Received": "0"
}
},
{
"TCP::Flags": {
"Expected": "( ACK )",
"Received": "( RST )"
}
},
{
"TCP::WindowsSize": {
"Expected": "5840",
"Received": "0"
}
},
{
"TCP::CheckSum": {
"Expected": "0x7655",
"Received": "0x8374"
}
},
{
"IP::ExpCongestionNot": {
"Expected": "0",
"Received": "3"
}
},
{
"IP::Identification": {
"Expected": "0xf5dd",
"Received": "0x0"
}
},
{
"IP::TTL": {
"Expected": "7",
"Received": "58"
}
},
{
"IP::CheckSum": {
"Expected": "0x815a",
"Received": "0x4435"
}
},
{
"IP::SourceIP": {
"Expected": "192.168.0.126",
"Received": "181.30.134.83"
}
},
{
"IP::DestinationIP": {
"Expected": "181.30.134.83",
"Received": "192.168.0.126"
}
}
],
"Additions": [],
"name": "83-134-30-181.fibertel.com.ar",
"Deletions": []
}
],
"sport": "33335",
"explorationName": "raspberrypi",
"date": "02/06/18 02:18:16 +0000",
"start": {
"sec": 1517883496,
"usec": 96460
},
"src": "192.168.0.126"
}
- rtt Collection: includes the rtt meassurements to every hop in the revealed path. Each document has the following format:
{
"_id": {
"$oid": "5a7948c074fece0dc2c18f4b"
},
"stop_data": 0,
"attempts": 1,
"userid": 0,
"version": "0.1",
"probe_size": 40,
"wait_probe": 0,
"stop_reason": "HOPLIMIT",
"start": {
"sec": 1517883496,
"ftime": "2018-02-06 02:18:16",
"usec": 696807
},
"wait": 1,
"method": "tcp-ack",
"firsthop": 6,
"dst": "181.30.134.83",
"hop_count": 6,
"explorationName": "raspberrypi",
"hops": [
{
"probe_ttl": 6,
"icmp_code": 0,
"reply_size": 56,
"icmp_q_tos": 3,
"probe_id": 1,
"icmp_q_ttl": 1,
"probe_size": 40,
"reply_ipid": 0,
"reply_tos": 195,
"reply_ttl": 250,
"addr": "200.89.161.118",
"icmp_q_ipl": 40,
"tx": {
"sec": 1517883496,
"usec": 747040
},
"rtt": 41.129,
"icmp_type": 11
}
],
"type": "trace",
"tos": 0,
"hoplimit": 6,
"sport": 33335,
"src": "192.168.0.126",
"dport": 44444
}
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The next example send a discovery path probe to 8.8.8.8 every 2 minutes [-D pathInterval] for 10 minutes [-t explorationTime].
To each revealed hop, the RTT is meassured every 1 second [-T rttInterval] . The probes used are TCP-ACK [-m method] and the first probe's ttl is 6 [-f firstTTL]. Finally, the results are stored in the mongo database [--mongodb].
sudo python3 rttExplorer.py -i 8.8.8.8 -t 10 -D 2 -m TCP-ACK -f 6 -—mongodb
- The second example is similar to the previous one but the targets are read from the targets.txt file [-I inputTargetFile].
sudo python3 rttExplorer.py -I targets.txt -t 10 -D 2 -m TCP-ACK -f 6 -—mongodb
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To see some output results try to connect to the sandbox mongodb.
To connect using the mongo shell:
% mongo ds163656.mlab.com:63656/conexdat -u <dbuser> -p <dbpassword>To connect using a driver via the standard MongoDB URI:
mongodb://<dbuser>:<dbpassword>@ds163656.mlab.com:63656/conexdatread-only credentials: <dbuser>: conexdat_uba <dbpassword>: 12345678
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