94 lines
3.1 KiB
Java
94 lines
3.1 KiB
Java
package com.jenkov.nioserver;
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import java.nio.ByteBuffer;
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/**
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* Project: <strong>java-nio-server</strong><br>
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* File: <strong>HttpUtilTest.java</strong><br>
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* Created: <strong>16 Oct 2015</strong><br>
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*
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* @author jjenkov
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*/
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public class Message {
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private MessageBuffer messageBuffer;
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public long socketId; // the id of source socket or destination socket, depending on whether is going
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// in or out.
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public byte[] sharedArray;
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public int offset; // offset into sharedArray where this message data starts.
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public int capacity; // the size of the section in the sharedArray allocated to this message.
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public int length; // the number of bytes used of the allocated section.
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public Object metaData;
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public Message(MessageBuffer messageBuffer) { this.messageBuffer = messageBuffer; }
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/**
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* Writes data from the ByteBuffer into this message - meaning into the buffer
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* backing this message.
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*
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* @param byteBuffer The ByteBuffer containing the message data to write.
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* @return
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*/
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public int writeToMessage(ByteBuffer byteBuffer) {
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int remaining = byteBuffer.remaining();
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while (this.length + remaining > capacity)
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if (!this.messageBuffer.expandMessage(this)) return -1;
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int bytesToCopy = Math.min(remaining, capacity - length);
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byteBuffer.get(sharedArray, offset + length, bytesToCopy);
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length += bytesToCopy;
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return bytesToCopy;
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}
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/**
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* Writes data from the byte array into this message - meaning into the buffer
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* backing this message.
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*
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* @param byteArray The byte array containing the message data to write.
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* @return
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*/
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public int writeToMessage(byte[] byteArray) { return writeToMessage(byteArray, 0, byteArray.length); }
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/**
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* Writes data from the byte array into this message - meaning into the buffer
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* backing this message.
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*
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* @param byteArray The byte array containing the message data to write.
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* @return
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*/
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public int writeToMessage(byte[] byteArray, int offset, int length) {
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int remaining = length;
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while (this.length + remaining > capacity)
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if (!this.messageBuffer.expandMessage(this)) return -1;
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int bytesToCopy = Math.min(remaining, capacity - this.length);
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System.arraycopy(byteArray, offset, sharedArray, this.offset + this.length, bytesToCopy);
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this.length += bytesToCopy;
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return bytesToCopy;
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}
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/**
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* In case the buffer backing the nextMessage contains more than one HTTP
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* message, move all data after the first
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* message to a new Message object.
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*
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* @param message The message containing the partial message (after the first
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* message).
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* @param endIndex The end index of the first message in the buffer of the
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* message given as parameter.
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*/
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public void writePartialMessageToMessage(Message message, int endIndex) {
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int startIndexOfPartialMessage = message.offset + endIndex;
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int lengthOfPartialMessage = message.offset + message.length - endIndex;
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System.arraycopy(message.sharedArray, startIndexOfPartialMessage, sharedArray, offset, lengthOfPartialMessage);
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}
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public int writeToByteBuffer(ByteBuffer byteBuffer) { return 0; }
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} |