okhttp3.UppercaseRequestInterceptor Maven / Gradle / Ivy
/*
* Copyright (C) 2019 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3;
import java.io.IOException;
import okio.Buffer;
import okio.BufferedSink;
import okio.ByteString;
import okio.ForwardingSink;
import okio.Okio;
import okio.Sink;
/** Rewrites the request body sent to the server to be all uppercase. */
public final class UppercaseRequestInterceptor implements Interceptor {
@Override public Response intercept(Chain chain) throws IOException {
return chain.proceed(uppercaseRequest(chain.request()));
}
/** Returns a request that transforms {@code request} to be all uppercase. */
private Request uppercaseRequest(Request request) {
RequestBody uppercaseBody = new ForwardingRequestBody(request.body()) {
@Override public void writeTo(BufferedSink sink) throws IOException {
delegate().writeTo(Okio.buffer(uppercaseSink(sink)));
}
};
return request.newBuilder()
.method(request.method(), uppercaseBody)
.build();
}
private Sink uppercaseSink(Sink sink) {
return new ForwardingSink(sink) {
@Override public void write(Buffer source, long byteCount) throws IOException {
ByteString bytes = source.readByteString(byteCount);
delegate().write(new Buffer().write(bytes.toAsciiUppercase()), byteCount);
}
};
}
}