io.netty.handler.codec.http.HttpRequestEncoder Maven / Gradle / Ivy
/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.handler.codec.http;
import io.netty.buffer.ByteBuf;
import io.netty.util.CharsetUtil;
import static io.netty.handler.codec.http.HttpConstants.*;
/**
* Encodes an {@link HttpRequest} or an {@link HttpContent} into
* a {@link ByteBuf}.
*/
public class HttpRequestEncoder extends HttpObjectEncoder {
private static final char SLASH = '/';
@Override
public boolean acceptOutboundMessage(Object msg) throws Exception {
return super.acceptOutboundMessage(msg) && !(msg instanceof HttpResponse);
}
@Override
protected void encodeInitialLine(ByteBuf buf, HttpRequest request) throws Exception {
buf.writeBytes(request.getMethod().toString().getBytes(CharsetUtil.US_ASCII));
buf.writeByte(SP);
// Add / as absolute path if no is present.
// See http://tools.ietf.org/html/rfc2616#section-5.1.2
String uri = request.getUri();
int start = uri.indexOf("://");
if (start != -1) {
int startIndex = start + 3;
if (uri.lastIndexOf(SLASH) <= startIndex) {
uri += SLASH;
}
}
buf.writeBytes(uri.getBytes("UTF-8"));
buf.writeByte(SP);
buf.writeBytes(request.getProtocolVersion().toString().getBytes(CharsetUtil.US_ASCII));
buf.writeByte(CR);
buf.writeByte(LF);
}
}