I'M testing a site that supports HTTP/2,like this, and I try to use okhttp to send the request:
OkHttpClient okHttpClient = new OkHttpClient();
Request request = new Request.Builder()
.url("https://www.google.it")
.build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Request request, IOException e) {
e.printStackTrace();
}
@Override
public void onResponse(Response response) throws IOException {
Log.d("TestHttp", "OkHttp-Selected-Protocol: " + response.header("OkHttp-Selected-Protocol"));
Log.d("TestHttp", "Response code is " + response.code());
}
});
In the log I got something like this:
OkHttp-Selected-Protocol: http/1.1
The okhttpClient chose to use http/1.1, how can I force it to use HTTP/2?
OkHttp (https://square.github.io/okhttp/) is an efficient HTTP & HTTP/2 client for Android and Java applications. It's been widely used in Android and has good documentation also.
OkHttp Query Parameters Example Builder urlBuilder = HttpUrl. parse("https://httpbin.org/get).newBuilder(); urlBuilder. addQueryParameter("website", "www.journaldev.com"); urlBuilder. addQueryParameter("tutorials", "android"); String url = urlBuilder.
OkHttp is an HTTP client from Square for Java and Android applications. It's designed to load resources faster and save bandwidth. OkHttp is widely used in open-source projects and is the backbone of libraries like Retrofit, Picasso, and many others.
Okhttp 2.5+ only support http/2 above 5.0+ via ALPN.
but you can modify the source code to support http/2 above 4.0+ via NPN.
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