# Latest

**URL:** https://discourse.mitmproxy.org/latest.md

[Latest](https://discourse.mitmproxy.org/latest.md) · [Categories](https://discourse.mitmproxy.org/categories.md)

---

## [The mitmproxy forums have been discontinued](https://discourse.mitmproxy.org/t/the-mitmproxy-forums-have-been-discontinued/1721)

<div class="topic-metadata">

**Author:** [@mhils](https://discourse.mitmproxy.org/u/mhils)\
**Replies:** 0\
**Last updated:** [November 4, 2019, 2:25pm UTC](https://discourse.mitmproxy.org/t/the-mitmproxy-forums-have-been-discontinued/1721 "2019-11-04T14:25:04Z")

</div>

Hi all, We’re closing the mitmproxy forums in favor of GitHub Discussions. Please use GitHub Discussions for questions and support requests, GitHub Issues to lodge clear-cut bug reports, and our Developer Slack for…

---

## [TLS to SSLv3 Downgrade](https://discourse.mitmproxy.org/t/tls-to-sslv3-downgrade/796)

<div class="topic-metadata">

**Author:** [@christypriory](https://discourse.mitmproxy.org/u/christypriory)\
**Replies:** 1\
**Last updated:** [January 15, 2018, 12:57pm UTC](https://discourse.mitmproxy.org/t/tls-to-sslv3-downgrade/796 "2018-01-15T12:57:51Z")

</div>

I have an Android app that will connect to a server with TLS 1.2. The server also supports SSLv3. I would like to know if it’s possible to configure MITM Proxy that will downgrade the connection from TLS 1.2 to SSLv3.

---

## [Reverse proxy listen\_port not taking](https://discourse.mitmproxy.org/t/reverse-proxy-listen-port-not-taking/1709)

<div class="topic-metadata">

**Author:** [@imac](https://discourse.mitmproxy.org/u/imac)\
**Replies:** 2\
**Last updated:** [November 4, 2019, 12:29pm UTC](https://discourse.mitmproxy.org/t/reverse-proxy-listen-port-not-taking/1709 "2019-11-04T12:29:03Z")

</div>

I’ve set up a simple reverse proxy on Ubuntu: mitmproxy --mode reverse:http://host.example.com/ --set block\_global=false --set listen\_port=80 Earlier, I was getting “Error starting proxy server: PermissionError(13, ‘Per…

---

## [Blocking specific HTTPS POST request by payload/endpoint?](https://discourse.mitmproxy.org/t/blocking-specific-https-post-request-by-payload-endpoint/1719)

<div class="topic-metadata">

**Author:** [@victorhooi](https://discourse.mitmproxy.org/u/victorhooi)\
**Replies:** 1\
**Last updated:** [November 4, 2019, 12:22pm UTC](https://discourse.mitmproxy.org/t/blocking-specific-https-post-request-by-payload-endpoint/1719 "2019-11-04T12:22:57Z")

</div>

We have a third party web app served over HTTPS. There is a specific HTTP POST request that we’d like to block and/or manipulate - but only for certain payloads. We can find this based on a substring in the HTTP payload…

---

## [Getting requests from a mobile app that only works via VPN?](https://discourse.mitmproxy.org/t/getting-requests-from-a-mobile-app-that-only-works-via-vpn/1711)

<div class="topic-metadata">

**Author:** [@vonpupp](https://discourse.mitmproxy.org/u/vonpupp)\
**Replies:** 1\
**Last updated:** [November 1, 2019, 5:03am UTC](https://discourse.mitmproxy.org/t/getting-requests-from-a-mobile-app-that-only-works-via-vpn/1711 "2019-11-01T05:03:10Z")

</div>

Hello, I want to check the requests of an app of video streaming that only works on mobiles phones within the US. I am not in the US, so I am having a hard time to achieve what I want. What I have done so far is the fo…

---

## [Proxying to improve web page accessibility?](https://discourse.mitmproxy.org/t/proxying-to-improve-web-page-accessibility/1716)

<div class="topic-metadata">

**Author:** [@Rich\_Morin](https://discourse.mitmproxy.org/u/Rich_Morin)\
**Replies:** 1\
**Last updated:** [October 30, 2019, 6:06pm UTC](https://discourse.mitmproxy.org/t/proxying-to-improve-web-page-accessibility/1716 "2019-10-30T18:06:40Z")

</div>

I’m interested in creating a tool to improve the accessibility of web pages. For example, it might perform HTML rewriting (e.g., to add ARIA support) and adding explanatory dialogs (e.g., page index or table of contents,…

---

## [Mitmdump - cutting off responses](https://discourse.mitmproxy.org/t/mitmdump-cutting-off-responses/1714)

<div class="topic-metadata">

**Author:** [@jspudz](https://discourse.mitmproxy.org/u/jspudz)\
**Replies:** 0\
**Last updated:** [October 29, 2019, 4:30pm UTC](https://discourse.mitmproxy.org/t/mitmdump-cutting-off-responses/1714 "2019-10-29T16:30:30Z")

</div>

Hey all, new to mitmdump/proxy but I am finding this tool to be fantastic. I have a requirement to capture ALL web traffic from the proxy (especially sourced in javascript), and parse it (ideally from command line) look…

---

## [Mitmproxy with Nginx](https://discourse.mitmproxy.org/t/mitmproxy-with-nginx/863)

<div class="topic-metadata">

**Author:** [@00cool](https://discourse.mitmproxy.org/u/00cool)\
**Replies:** 1\
**Last updated:** [October 27, 2019, 11:26am UTC](https://discourse.mitmproxy.org/t/mitmproxy-with-nginx/863 "2019-10-27T11:26:19Z")

</div>

I want to connect multiple clients on Mitmproxy servers (multiple instances) using Nginx. Will it be possible to route all the traffic from client through Nginx to upstream Mitmproxy servers? Thanks.

---

## [MajorSignalSearch: malware using mitmproxy](https://discourse.mitmproxy.org/t/majorsignalsearch-malware-using-mitmproxy/1690)

<div class="topic-metadata">

**Author:** [@tschoonj](https://discourse.mitmproxy.org/u/tschoonj)\
**Replies:** 2\
**Last updated:** [October 23, 2019, 3:58pm UTC](https://discourse.mitmproxy.org/t/majorsignalsearch-malware-using-mitmproxy/1690 "2019-10-23T15:58:40Z")

</div>

Hi, This morning I discovered some malware on my wife’s MacBook Pro which had the unpleasant effect of redirecting Google search requests in Safari to Yahoo. A bit of investigation yielded a process called MajorSignalSe…

---

## [Mitmproxy not working with iOS 13](https://discourse.mitmproxy.org/t/mitmproxy-not-working-with-ios-13/1705)

<div class="topic-metadata">

**Author:** [@dmorgun](https://discourse.mitmproxy.org/u/dmorgun)\
**Replies:** 1\
**Last updated:** [October 23, 2019, 8:32am UTC](https://discourse.mitmproxy.org/t/mitmproxy-not-working-with-ios-13/1705 "2019-10-23T08:32:43Z")

</div>

Hello, I can’t view mobile traffic with iOS 13.1.2 everything was fine with iOS 12.x But when I have updated iOS. mitmproxy stopped working for me. I’m installing certificate from mitm.it but it still won’t work. I’m u…

---

## [Mitmproxy/mitmdump multiple processes using same proxy port](https://discourse.mitmproxy.org/t/mitmproxy-mitmdump-multiple-processes-using-same-proxy-port/1697)

<div class="topic-metadata">

**Author:** [@mitmj](https://discourse.mitmproxy.org/u/mitmj)\
**Replies:** 0\
**Last updated:** [October 18, 2019, 7:48am UTC](https://discourse.mitmproxy.org/t/mitmproxy-mitmdump-multiple-processes-using-same-proxy-port/1697 "2019-10-18T07:48:47Z")

</div>

Hi. I noticed that it is possible to run multiple mitmproxy/mitmdump instances on the same proxy port. As I don’t think that this is a valid scenario (as it is totally indeterministic which process processes a request)…

---

## [Slow and Crashing on Raspberry Pi](https://discourse.mitmproxy.org/t/slow-and-crashing-on-raspberry-pi/1695)

<div class="topic-metadata">

**Author:** [@evan950](https://discourse.mitmproxy.org/u/evan950)\
**Replies:** 0\
**Last updated:** [October 17, 2019, 2:46am UTC](https://discourse.mitmproxy.org/t/slow-and-crashing-on-raspberry-pi/1695 "2019-10-17T02:46:05Z")

</div>

Hi all, (Duplicate here as I’m unsure how to proceed) I’m having problems running mitmproxy successfully on my raspberry pi. I’ve set it up this way such that I can find a certain requests which can appear randomly, h…

---

## [Reverse Mode: change request host, according to the SNI (HTTPS)](https://discourse.mitmproxy.org/t/reverse-mode-change-request-host-according-to-the-sni-https/466)

<div class="topic-metadata">

**Author:** [@fakey](https://discourse.mitmproxy.org/u/fakey)\
**Replies:** 3\
**Last updated:** [October 17, 2019, 2:32am UTC](https://discourse.mitmproxy.org/t/reverse-mode-change-request-host-according-to-the-sni-https/466 "2019-10-17T02:32:00Z")

</div>

Hi All, I am trying to accept connections in Reverse mode, and set dynamic destination, according to the reverse URL being used. The error message i am getting back from the proxy is: "Changing the Host server for H…

---

## [Error decoding header block: Encoder did not shrink table size to within the max](https://discourse.mitmproxy.org/t/error-decoding-header-block-encoder-did-not-shrink-table-size-to-within-the-max/1692)

<div class="topic-metadata">

**Author:** [@lpcdma](https://discourse.mitmproxy.org/u/lpcdma)\
**Replies:** 0\
**Last updated:** [October 9, 2019, 2:38am UTC](https://discourse.mitmproxy.org/t/error-decoding-header-block-encoder-did-not-shrink-table-size-to-within-the-max/1692 "2019-10-09T02:38:26Z")

</div>

Can only get such an error message!!! command args:./mitmweb --listen-port=7777 --web-iface 0.0.0.0 --set block\_global=false --set http2\_priority=true --set termlog\_verbosity=debug --set bodyize\_limit=3m debug info :sl…

---

## [Is it possible to show the full URLs?](https://discourse.mitmproxy.org/t/is-it-possible-to-show-the-full-urls/1688)

<div class="topic-metadata">

**Author:** [@LunaticoCR](https://discourse.mitmproxy.org/u/LunaticoCR)\
**Replies:** 0\
**Last updated:** [October 1, 2019, 3:07pm UTC](https://discourse.mitmproxy.org/t/is-it-possible-to-show-the-full-urls/1688 "2019-10-01T15:07:05Z")

</div>

Currently all URLs are truncated, is it possible to display the full URL strings without truncating them? mitmweb doesn’t truncate the URLs but mitmproxy does.

---

## [Cert option ignores subdomain when used with wildcard certificate](https://discourse.mitmproxy.org/t/cert-option-ignores-subdomain-when-used-with-wildcard-certificate/1680)

<div class="topic-metadata">

**Author:** [@nysos](https://discourse.mitmproxy.org/u/nysos)\
**Replies:** 0\
**Last updated:** [September 24, 2019, 12:03pm UTC](https://discourse.mitmproxy.org/t/cert-option-ignores-subdomain-when-used-with-wildcard-certificate/1680 "2019-09-24T12:03:00Z")

</div>

I using the latest mitmproxy version (4.0.4) and try to achieve the following: a specific subdomain should be decrypted using a wildcard keypair I own for this domain (wildcard.pem), while all other subdomains should be…

---

## [Using MITM API for fetching information](https://discourse.mitmproxy.org/t/using-mitm-api-for-fetching-information/1678)

<div class="topic-metadata">

**Author:** [@ba127004](https://discourse.mitmproxy.org/u/ba127004)\
**Replies:** 0\
**Last updated:** [September 23, 2019, 7:47pm UTC](https://discourse.mitmproxy.org/t/using-mitm-api-for-fetching-information/1678 "2019-09-23T19:47:44Z")

</div>

Hello Mitm folks, I looked at documentation on API but was not clear. The use case that I have is to have an API call (using Python) to capture the following information and store as log file (txt human readable). Red…

---

## [Why no examples of \`config.yaml\` ?!](https://discourse.mitmproxy.org/t/why-no-examples-of-config-yaml/1674)

<div class="topic-metadata">

**Author:** [@blaise-sumo](https://discourse.mitmproxy.org/u/blaise-sumo)\
**Replies:** 0\
**Last updated:** [September 16, 2019, 8:37pm UTC](https://discourse.mitmproxy.org/t/why-no-examples-of-config-yaml/1674 "2019-09-16T20:37:47Z")

</div>

Is there some reason the docs don’t include an example of config.yaml ? YAML is a finicky format and it’s so easy to screw up indentation, etc. that it would be nice to start from a working example. I’m surprised that b…

---

## [Cannot install mitmproxy certificate on windows 10](https://discourse.mitmproxy.org/t/cannot-install-mitmproxy-certificate-on-windows-10/784)

<div class="topic-metadata">

**Author:** [@rbjobs](https://discourse.mitmproxy.org/u/rbjobs)\
**Replies:** 2\
**Last updated:** [September 14, 2019, 5:33pm UTC](https://discourse.mitmproxy.org/t/cannot-install-mitmproxy-certificate-on-windows-10/784 "2019-09-14T17:33:18Z")

</div>

In windows cmd, I switched to the folder where the certificate is present and ran this command: certutil.exe -importpfx Root mitmproxy-ca-cert.p12 The output was: Enter PFX password: CertUtil: -importPFX command FAILE…

---

## [Secure 2 way SSL](https://discourse.mitmproxy.org/t/secure-2-way-ssl/1665)

<div class="topic-metadata">

**Author:** [@mproxy](https://discourse.mitmproxy.org/u/mproxy)\
**Replies:** 0\
**Last updated:** [September 5, 2019, 10:36pm UTC](https://discourse.mitmproxy.org/t/secure-2-way-ssl/1665 "2019-09-05T22:36:18Z")

</div>

How to implement secure 2-way SSL?

---

## [Mitmweb.exe works fine, but mitmdump.exe doesn't](https://discourse.mitmproxy.org/t/mitmweb-exe-works-fine-but-mitmdump-exe-doesnt/1662)

<div class="topic-metadata">

**Author:** [@Nepey](https://discourse.mitmproxy.org/u/Nepey)\
**Replies:** 0\
**Last updated:** [September 2, 2019, 1:34pm UTC](https://discourse.mitmproxy.org/t/mitmweb-exe-works-fine-but-mitmdump-exe-doesnt/1662 "2019-09-02T13:34:47Z")

</div>

Hello, I starts mitmweb or mitmdump on windows 10 and see all https requests from android emulator. but mitmweb works very well, mitmdump does not. I tryed different combinations of options. mitmdump -s test.py mitmd…

---

## [Anki Vector](https://discourse.mitmproxy.org/t/anki-vector/1659)

<div class="topic-metadata">

**Author:** [@RamblingGeekUK](https://discourse.mitmproxy.org/u/RamblingGeekUK)\
**Replies:** 0\
**Last updated:** [September 1, 2019, 10:19pm UTC](https://discourse.mitmproxy.org/t/anki-vector/1659 "2019-09-01T22:19:06Z")

</div>

Hi All, I’ve been playing around with mitmproxy on a raspberry pi and I have it all working, very cool, btw, awesome work. I’m trying to see what calls the Anki Vector makes, so I can figure out my own server. The app…

---

## [One way ssl and mitm](https://discourse.mitmproxy.org/t/one-way-ssl-and-mitm/1650)

<div class="topic-metadata">

**Author:** [@mproxy](https://discourse.mitmproxy.org/u/mproxy)\
**Replies:** 1\
**Last updated:** [August 30, 2019, 1:52pm UTC](https://discourse.mitmproxy.org/t/one-way-ssl-and-mitm/1650 "2019-08-30T13:52:28Z")

</div>

There are thousands of devices connecting to a server in the cloud with one way SSL where cloud has CA signed cert installed. Assuming device does proper SSL cert validation when connecting to the server and fails the c…

---

## [Chrome to Google docs via proxy in HTTP/1.1 mode](https://discourse.mitmproxy.org/t/chrome-to-google-docs-via-proxy-in-http-1-1-mode/1648)

<div class="topic-metadata">

**Author:** [@dsetia](https://discourse.mitmproxy.org/u/dsetia)\
**Replies:** 0\
**Last updated:** [August 28, 2019, 8:49pm UTC](https://discourse.mitmproxy.org/t/chrome-to-google-docs-via-proxy-in-http-1-1-mode/1648 "2019-08-28T20:49:54Z")

</div>

This is not a proxy issue. I am looking for some ideas to work around my issue which is this: A host is running Chrome browser with 20-30 open tabs to various Google docs. All connections use http2. There is no issue i…

---

## [Can't find mitm certificate](https://discourse.mitmproxy.org/t/cant-find-mitm-certificate/1646)

<div class="topic-metadata">

**Author:** [@varufix](https://discourse.mitmproxy.org/u/varufix)\
**Replies:** 0\
**Last updated:** [August 28, 2019, 2:48am UTC](https://discourse.mitmproxy.org/t/cant-find-mitm-certificate/1646 "2019-08-28T02:48:32Z")

</div>

Can’t find where the certificate was installed. Using windows 10, certmgr and can’t find any mitm reference. How to uninstall it completly? Thanks.

---

## [How to generate har file by using mitmproxy docker?](https://discourse.mitmproxy.org/t/how-to-generate-har-file-by-using-mitmproxy-docker/1644)

<div class="topic-metadata">

**Author:** [@fasty23](https://discourse.mitmproxy.org/u/fasty23)\
**Replies:** 0\
**Last updated:** [August 23, 2019, 5:00pm UTC](https://discourse.mitmproxy.org/t/how-to-generate-har-file-by-using-mitmproxy-docker/1644 "2019-08-23T17:00:54Z")

</div>

I’m using this command but I got error: docker run --rm -it -p 8080:8080 -v $PWD:/tmp mitmproxy/mitmproxy mitmdump -s ./har\_dump.py --set hardump=/dump.har Error: /usr/bin/mitmdump: No such script The question is how…

---

## [Return a custom response if connection to server failed](https://discourse.mitmproxy.org/t/return-a-custom-response-if-connection-to-server-failed/1643)

<div class="topic-metadata">

**Author:** [@dudeproxy11](https://discourse.mitmproxy.org/u/dudeproxy11)\
**Replies:** 0\
**Last updated:** [August 21, 2019, 6:44pm UTC](https://discourse.mitmproxy.org/t/return-a-custom-response-if-connection-to-server-failed/1643 "2019-08-21T18:44:39Z")

</div>

I’ve got a mitmproxy setup with multiple reverse proxy targets. Sometimes some of them timeout. when that happens the client receives: “ProtocolException('Server connection to ('domain.com', 80) failed:” Tried making a…

---

## [How to add filter to mitmdump while generating har file](https://discourse.mitmproxy.org/t/how-to-add-filter-to-mitmdump-while-generating-har-file/1639)

<div class="topic-metadata">

**Author:** [@fasty23](https://discourse.mitmproxy.org/u/fasty23)\
**Replies:** 0\
**Last updated:** [August 14, 2019, 6:50pm UTC](https://discourse.mitmproxy.org/t/how-to-add-filter-to-mitmdump-while-generating-har-file/1639 "2019-08-14T18:50:34Z")

</div>

I’m trying to create har file while filtering data from specific IP address 192.168.1.3 my command is like this: mitmdump -s ./har\_dump.py --set hardump=./dump.har ~src 192.168.1.3 But still see traffic from other devi…

---

## [Additional files to watch or reload on update](https://discourse.mitmproxy.org/t/additional-files-to-watch-or-reload-on-update/1637)

<div class="topic-metadata">

**Author:** [@snowwolf75](https://discourse.mitmproxy.org/u/snowwolf75)\
**Replies:** 0\
**Last updated:** [August 14, 2019, 1:59am UTC](https://discourse.mitmproxy.org/t/additional-files-to-watch-or-reload-on-update/1637 "2019-08-14T01:59:12Z")

</div>

When you run mitmproxy (or possibly mitmweb) with the -s filename.py, any time you save the file it will trigger a reload of the file. This means any updated procedures in that file will then be called by the flows. So …

---

## [How to use mitmproxy in android system wide?](https://discourse.mitmproxy.org/t/how-to-use-mitmproxy-in-android-system-wide/1636)

<div class="topic-metadata">

**Author:** [@gitornotgit](https://discourse.mitmproxy.org/u/gitornotgit)\
**Replies:** 1\
**Last updated:** [August 14, 2019, 1:42am UTC](https://discourse.mitmproxy.org/t/how-to-use-mitmproxy-in-android-system-wide/1636 "2019-08-14T01:42:10Z")

</div>

Hi there, I want to debug a MQTT app and MQTT protocol doesn’t follow the proxy set in network section of the android device. How do you guys do such a thing in android ? Is there any app that creates a VPN connection o…

[Next page](https://discourse.mitmproxy.org/latest.md?page=1)