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Network Plugin Setup

To use the Network plugin, you need to add the plugin to your Flipper client instance.


The network plugin is shipped as a separate Maven artifact, as follows:

dependencies {
debugImplementation 'com.facebook.flipper:flipper-network-plugin:0.259.0'

Once added to your dependencies, you can instantiate the plugin and add it to the client:


NetworkFlipperPlugin networkFlipperPlugin = new NetworkFlipperPlugin();
new NetworkingModule.CustomClientBuilder() {
public void apply(OkHttpClient.Builder builder) {
builder.addNetworkInterceptor(new FlipperOkhttpInterceptor(networkFlipperPlugin));

OkHttp Integration​

If you are using the popular OkHttp library, you can use the Interceptors system to automatically hook into your existing stack, as shown in the following snippet:


new OkHttpClient.Builder()
.addNetworkInterceptor(new FlipperOkhttpInterceptor(networkFlipperPlugin))

As interceptors can modify the request and response, add the Flipper interceptor after all others to get an accurate view of the network traffic.

Protobuf / Retrofit Integration​

If you are using Retrofit with Protobuf request or response types, you can setup automatic decoding so that the network inspector can display a human readable payload. First you must add the separate dependency:

dependencies {
debugImplementation 'com.facebook.flipper:flipper-retrofit2-protobuf-plugin:0.91.2'

Then call SendProtobufToFlipperFromRetrofit for each service class:

import com.facebook.flipper.plugins.retrofit2protobuf.SendProtobufToFlipperFromRetrofit



To enable network inspection, add the following pod to your Podfile:

pod 'FlipperKit/SKIOSNetworkPlugin', '~>' + flipperkit_version

Initialize the plugin in the following way by updating AppDelegate.m:

#import <FlipperKitNetworkPlugin/FlipperKitNetworkPlugin.h>

[[FlipperClient sharedClient] addPlugin: [[FlipperKitNetworkPlugin alloc] initWithNetworkAdapter:[SKIOSNetworkAdapter new]]];

Protobuf + Retrofit Setup​

Gradle Dependencies​

Ensure that you already have an explicit dependency in your application's build.gradle including the plugin dependency, as shown in the following example:

dependencies {
implementation "com.squareup.retrofit2:retrofit:2.9.0"
implementation "com.squareup.retrofit2:converter-protobuf:2.9.0"

// update version below to match latest Flipper client app
debugImplementation "com.facebook.flipper:flipper-retrofit2-protobuf-plugin:0.84.0"

Sending Retrofit Service​

If you have a Retrofit service interface PersonService which has Protobuf body or return types then at the time you create your implementation, call the plugin with your baseURL and service class, as follows:

import com.facebook.flipper.plugins.retrofit2protobuf.SendProtobufToFlipperFromRetrofit
val personService = retrofit.create(