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This is the command cgrfetch that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


cgrfetch - Visualize CGR simulations

SYNOPSIS


cgrfetch [OPTIONS] DEST-NODE

DESCRIPTION


cgrfetch uses CGR to simulate sending a bundle from the local node to DEST-NODE. It traces
the execution of CGR to generate graphs of the routes that were considered and the routes
that were ultimately chosen to forward along. No bundle is sent during the simulation.

A JSON representation of the simulation is output to OUTPUT-FILE. The representation
includes parameters of the simulation and a structure for each considered route, which in
turn includes calculated parameters for the route and an image of the contact graph.

The dot(1) tool from the Graphviz package is used to generate the contact graph images and
is required for cgrfetch(1). The base64(1) tool from coreutils is used to embed the images
in the JSON and is also required.

OPTIONS


DEST-NODE
The final destination to route to. To be useful, it should be a node that exists in
the contact plan.

-q Disable trace message output.

-j Disable JSON output.

-m Use a minimum-latency extended COS for the bundle. This ends up sending the bundle to
all proximate nodes.

-t DISPATCH-OFFSET
Request a dispatch time of DISPATCH-OFFSET seconds from the time the command is run
(default: 0).

-e EXPIRATION-OFFSET
Set the bundle expiration time to EXPIRATION-OFFSET seconds from the time the command
is run (default: 3600).

-s BUNDLE-SIZE
Set the bundle payload size to BUNDLE-SIZE bytes (default: 0).

-o OUTPUT-FILE
Send JSON to OUTPUT-FILE (default: stdout).

-p OUTDUCT-PROTO
Use OUTDUCT-PROTO as the outduct protocol (default: udp).

-n OUTDUCT-NAME
Use OUTDUCT-NAME as the outduct name (default: *).

EXAMPLES


cgrfetch 8
Simulate CGR with destination node 8 and dispatch time equal to the current time.

cgrfetch 8 -t 60
Do the same with a dispatch time 60 seconds in the future.

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