I have this interceptor that i add to my OkHttp client:
public class RequestTokenInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
// Here where we'll try to refresh token.
// with an retrofit call
// After we succeed we'll proceed our request
Response response = chain.proceed(request);
return response;
}
}
How can i add headers to request in my interceptor?
I tried this but i am making mistake and i lose my request when creating new request:
public class RequestTokenInterceptor implements Interceptor {
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request request = chain.request();
Request newRequest;
try {
Log.d("addHeader", "Before");
String token = TokenProvider.getInstance(mContext).getToken();
newRequest = request.newBuilder()
.addHeader(HeadersContract.HEADER_AUTHONRIZATION, O_AUTH_AUTHENTICATION + token)
.addHeader(HeadersContract.HEADER_CLIENT_ID, CLIENT_ID)
.build();
} catch (Exception e) {
Log.d("addHeader", "Error");
e.printStackTrace();
return chain.proceed(request);
}
Log.d("addHeader", "after");
return chain.proceed(newRequest);
}
}
Note that, i know i can add header when creating request like this:
Request request = new Request.Builder()
.url("https://api.github.com/repos/square/okhttp/issues")
.header("User-Agent", "OkHttp Headers.java")
.addHeader("Accept", "application/json; q=0.5")
.addHeader("Accept", "application/vnd.github.v3+json")
.build();
But it doesn't fit my needs. I need it in interceptor.
Adds a header with name and value. Prefer this method for multiply-valued headers like "Cookie". Note that for some headers including Content-Length and Content-Encoding, OkHttp may replace value with a header derived from the request body.
The header fields of a single HTTP message. Values are uninterpreted strings; use Request and Response for interpreted headers. This class maintains the order of the header fields within the HTTP message. This class tracks header values line-by-line.
Interceptors, according to the documentation, are a powerful mechanism that can monitor, rewrite, and retry the API call. So, when we make an API call, we can either monitor it or perform some tasks. In a nutshell, Interceptors function similarly to airport security personnel during the security check process.
header("User-Agent", "OkHttp Headers. java") . addHeader("Accept", "application/json; q=0.5") . addHeader("Accept", "application/vnd.
Finally, I added the headers this way:
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request request = chain.request();
Request newRequest;
newRequest = request.newBuilder()
.addHeader(HeadersContract.HEADER_AUTHONRIZATION, O_AUTH_AUTHENTICATION)
.addHeader(HeadersContract.HEADER_X_CLIENT_ID, CLIENT_ID)
.build();
return chain.proceed(newRequest);
}
you can do it this way
private String GET(String url, Map<String, String> header) throws IOException {
Headers headerbuild = Headers.of(header);
Request request = new Request.Builder().url(url).headers(headerbuild).
build();
Response response = client.newCall(request).execute();
return response.body().string();
}
here is a useful gist from lfmingo
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
httpClient.addInterceptor(new Interceptor() {
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
Request request = original.newBuilder()
.header("User-Agent", "Your-App-Name")
.header("Accept", "application/vnd.yourapi.v1.full+json")
.method(original.method(), original.body())
.build();
return chain.proceed(request);
}
}
OkHttpClient client = httpClient.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With