JarCastingJava rendition of node-mitmproxy
Make sure to read the prerequisites section below.
Detailed information included in the AppiumPro article which introduces this library.
Why?
mitmproxy is great for capturing network traffic, but has no easy interface for Java users. The software testing community, specifically Appium mobile testers, want to be able to capture network requests made by devices during their Java tests.
This library will run mitmproxy in the background as a separate process, and allow you to pass in a lambda function which gets called on every network request captured by mitmproxy. This allows you to check the captured requests within you Java code without having to stop the proxy or end capture.
See @jonahss's Appium Pro posts on this topic:
- https://appiumpro.com/editions/62
- https://appiumpro.com/editions/63
- https://appiumpro.com/editions/65
What can I use this for?
For transparently rewriting HTTP/HTTPS responses. The mitmproxy plugin lets every HTTP request go through to the server uninhibited, and then passes it to Java via a WebSocket for rewriting.
How does it work?
mitmproxy-java starts a Websocket server and a Python plugin for mitmproxy connects to it and sends requests over. The two communicate via binary messages to reduce marshaling-related overhead.
Pre-requisites
mitmproxyV4 must be installed and runnable from the terminal. The install method cannot be a prebuilt binary or homebrew, since those packages are missing the Python websockets module. Install viapipor from source.- Python 3.6, since we use the new async/await syntax in the mitmproxy plugin
pip3 install websockets
Maven:
<dependency>
<groupId>io.appium</groupId>
<artifactId>mitmproxy-java</artifactId>
<version>1.6.2</version>
</dependency>
Gradle:
testCompile group: 'io.appium', name: 'mitmproxy-java', version: '1.6.1'
Usage
List<InterceptedMessage> messages = new ArrayList<InterceptedMessage>();
//optional, default port is 8080
int mitmproxyPort = 8090;
//optional, you can pass null if no extra params
List<String> extraMitmproxyParams = Arrays.asList("param1", "value1", "param2", "value2");
// remember to set local OS proxy settings in the Network Preferences
proxy = new MitmproxyJava("/usr/local/bin/mitmdump", (InterceptedMessage m) -> {
System.out.println("intercepted request for " + m.getRequest().getUrl());
messages.add(m);
return m;
}, mitmproxyPort, extraMitmproxyParams);
proxy.start();
// do stuff
proxy.stop();
See AppriumPro article for more guidelines: https://appiumpro.com/editions/65 Example can be found here: https://github.com/cloudgrey-io/appiumpro/blob/master/java/src/test/java/Edition065_Capture_Network_Requests.java
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Your Python plugin is bad and you should feel bad
See node-mitmproxy. Pull requests welcome!
Develop
Upload to Central Repository with command ./gradlew uploadArchives
