mitmproxy/doc-src/mitmdump.html

__mitmdump__ is the command-line companion to mitmproxy. It provides
tcpdump-like functionality to let you view, record, and programmatically
transform HTTP traffic. See the _--help_ flag output for complete
documentation.



# Examples


## Saving traffic

<pre class="terminal">
> mitmdump -w outfile
</pre>

Start up mitmdump in proxy mode, and write all traffic to __outfile__. 


## Filtering saved traffic

<pre class="terminal">
> mitmdump -nr infile -w outfile "~m post"
</pre>

Start mitmdump without binding to the proxy port (_-n_), read all flows from
infile, apply the specified filter expression (only match POSTs), and write to
outfile.


## Client replay

<pre class="terminal">
> mitmdump -nc outfile
</pre>

Start mitmdump without binding to the proxy port (_-n_), then replay all
requests from outfile (_-c filename_). Flags combine in the obvious way, so
you can replay requests from one file, and write the resulting flows to
another:

<pre class="terminal">
> mitmdump -nc srcfile -w dstfile
</pre>

See the [Client-side Replay](@!urlTo("clientreplay.html")!@) section for more information.


## Running a script

<pre class="terminal">
> mitmdump -s examples/add_header.py
</pre>

This runs the __add_header.py__ example script, which simply adds a new header
to all responses.


## Scripted data transformation

<pre class="terminal">
> mitmdump -ns examples/add_header.py -r srcfile -w dstfile
</pre>

This command loads flows from __srcfile__, transforms it according to the
specified script, then writes it back to __dstfile__.