libcore.net.http.RetryableOutputStream Maven / Gradle / Ivy
/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 libcore.net.http;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
/**
* An HTTP request body that's completely buffered in memory. This allows
* the post body to be transparently re-sent if the HTTP request must be
* sent multiple times.
*/
final class RetryableOutputStream extends AbstractHttpOutputStream {
private final int limit;
private final ByteArrayOutputStream content;
public RetryableOutputStream(int limit) {
this.limit = limit;
this.content = new ByteArrayOutputStream(limit);
}
public RetryableOutputStream() {
this.limit = -1;
this.content = new ByteArrayOutputStream();
}
@Override public synchronized void close() throws IOException {
if (closed) {
return;
}
closed = true;
if (content.size() < limit) {
throw new IOException("content-length promised "
+ limit + " bytes, but received " + content.size());
}
}
@Override public synchronized void write(byte[] buffer, int offset, int count)
throws IOException {
checkNotClosed();
Arrays.checkOffsetAndCount(buffer.length, offset, count);
if (limit != -1 && content.size() > limit - count) {
throw new IOException("exceeded content-length limit of " + limit + " bytes");
}
content.write(buffer, offset, count);
}
public synchronized int contentLength() throws IOException {
close();
return content.size();
}
public void writeToSocket(OutputStream socketOut) throws IOException {
content.writeTo(socketOut);
}
}