Examples with Handshake okhttp3.Handshake used on opensource projects

Example 26 with Handshake

use of okhttp3.Handshake in project edx-app-android by edx.

the class CustomCacheQueryInterceptor method intercept.

@Override
public Response intercept(@NonNull final Chain chain) throws IOException {
    final Request request = chain.request();
    Response response = chain.proceed(request);
    final String urlString = request.url().toString();
    // If the OkHttp client
    if (response.cacheResponse() != null) {
        cacheManager.remove(urlString);
    } else {
        final String cachedBody = cacheManager.get(urlString);
        if (cachedBody != null) {
            /* Since we don't cache the metadata, the cached entries should always be assumed to
                 * have a 200 response code. The body is not provided in this response, because it
                 * would only be needed if we don't have a network response.
                 */
            Response cacheResponse = response.newBuilder().code(HttpStatus.OK).message("OK").handshake(request.isHttps() ? DUMMY_HANDSHAKE : null).priorResponse(null).networkResponse(null).cacheResponse(null).body(null).build();
            final CacheStrategy cacheStrategy = new CacheStrategy.Factory(System.currentTimeMillis(), request, cacheResponse).get();
            cacheResponse = cacheStrategy.cacheResponse;
            if (cacheResponse != null) {
                /* Either querying the server is forbidden by the Cache-Control headers (if
                     * there is no network response), or they require a conditional query
                     * (otherwise). In the latter case, either the server has validated the cached
                     * response or not. Only in the last case would the network response be
                     * delivered; in the first two cases the cached response would be delivered
                     * instead.
                     */
                final Response networkResponse = response.networkResponse();
                if (networkResponse == null || shouldUseCachedResponse(cacheResponse, networkResponse)) {
                    response = response.newBuilder().code(HttpStatus.OK).cacheResponse(cacheResponse).body(ResponseBody.create(MediaType.parse("application/json"), cachedBody)).build();
                } else {
                    response = response.newBuilder().cacheResponse(cacheResponse).build();
                    if (HttpEngine.hasBody(response) && HttpMethod.invalidatesCache(request.method())) {
                        cacheManager.remove(urlString);
                    }
                }
            }
        }
    }
    return response;
}