Example usage for io.netty.buffer Unpooled buffer

Introduction

In this page you can find the example usage for io.netty.buffer Unpooled buffer.

Prototype

public static ByteBuf buffer(int initialCapacity)

Source Link

Document

Creates a new big-endian Java heap buffer with the specified capacity , which expands its capacity boundlessly on demand.

Usage

From source file:com.twitter.http2.DefaultHttpDataFrame.java

License:Apache License

/**
 * Creates a new instance.//from w  w w.  ja v a  2  s.  c o  m
 *
 * @param streamId the stream identifier of this frame
 */
public DefaultHttpDataFrame(int streamId) {
    this(streamId, Unpooled.buffer(0));
}

From source file:com.twitter.http2.HttpFrameDecoderTest.java

License:Apache License

private ByteBuf frame(int length, int type, byte flags, int streamId) {
    ByteBuf buffer = releaseLater(Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length));
    buffer.writeMedium(length);/*from  w  ww .ja v a 2 s .com*/
    buffer.writeByte(type);
    buffer.writeByte(flags);
    buffer.writeInt(streamId);
    return buffer;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 DATA Frame//from w  w w  .  j ava  2s.  c  om
 */
public ByteBuf encodeDataFrame(int streamId, boolean endStream, ByteBuf data) {
    byte flags = endStream ? HTTP_FLAG_END_STREAM : 0;
    ByteBuf header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE);
    writeFrameHeader(header, data.readableBytes(), HTTP_DATA_FRAME, flags, streamId);
    return Unpooled.wrappedBuffer(header, data);
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 HEADERS Frame/*w ww .  j  a v  a 2  s  .  c  om*/
 */
public ByteBuf encodeHeadersFrame(int streamId, boolean endStream, boolean exclusive, int dependency,
        int weight, ByteBuf headerBlock) {
    byte flags = endStream ? HTTP_FLAG_END_STREAM : 0;
    boolean hasPriority = exclusive || dependency != HTTP_DEFAULT_DEPENDENCY || weight != HTTP_DEFAULT_WEIGHT;
    if (hasPriority) {
        flags |= HTTP_FLAG_PRIORITY;
    }
    int maxLength = hasPriority ? HTTP_MAX_LENGTH - 5 : HTTP_MAX_LENGTH;
    boolean needsContinuations = headerBlock.readableBytes() > maxLength;
    if (!needsContinuations) {
        flags |= HTTP_FLAG_END_HEADERS;
    }
    int length = needsContinuations ? maxLength : headerBlock.readableBytes();
    if (hasPriority) {
        length += 5;
    }
    int frameLength = hasPriority ? HTTP_FRAME_HEADER_SIZE + 5 : HTTP_FRAME_HEADER_SIZE;
    ByteBuf header = Unpooled.buffer(frameLength);
    writeFrameHeader(header, length, HTTP_HEADERS_FRAME, flags, streamId);
    if (hasPriority) {
        if (exclusive) {
            header.writeInt(dependency | 0x80000000);
        } else {
            header.writeInt(dependency);
        }
        header.writeByte(weight - 1);
        length -= 5;
    }
    ByteBuf frame = Unpooled.wrappedBuffer(header, headerBlock.readSlice(length));
    if (needsContinuations) {
        while (headerBlock.readableBytes() > HTTP_MAX_LENGTH) {
            header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE);
            writeFrameHeader(header, HTTP_MAX_LENGTH, HTTP_CONTINUATION_FRAME, (byte) 0, streamId);
            frame = Unpooled.wrappedBuffer(frame, header, headerBlock.readSlice(HTTP_MAX_LENGTH));
        }
        header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE);
        writeFrameHeader(header, headerBlock.readableBytes(), HTTP_CONTINUATION_FRAME, HTTP_FLAG_END_HEADERS,
                streamId);
        frame = Unpooled.wrappedBuffer(frame, header, headerBlock);
    }
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 PRIORITY Frame//  w  w w  .j  av  a 2  s  . c o  m
 */
public ByteBuf encodePriorityFrame(int streamId, boolean exclusive, int dependency, int weight) {
    int length = 5;
    byte flags = 0;
    ByteBuf frame = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length);
    writeFrameHeader(frame, length, HTTP_PRIORITY_FRAME, flags, streamId);
    if (exclusive) {
        frame.writeInt(dependency | 0x80000000);
    } else {
        frame.writeInt(dependency);
    }
    frame.writeByte(weight - 1);
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 RST_STREAM Frame//from   w  w w  .jav a  2s .c  o m
 */
public ByteBuf encodeRstStreamFrame(int streamId, int errorCode) {
    int length = 4;
    byte flags = 0;
    ByteBuf frame = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length);
    writeFrameHeader(frame, length, HTTP_RST_STREAM_FRAME, flags, streamId);
    frame.writeInt(errorCode);
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 SETTINGS Frame//w  ww  .j  a v a  2 s  . co  m
 */
public ByteBuf encodeSettingsFrame(HttpSettingsFrame httpSettingsFrame) {
    Set<Integer> ids = httpSettingsFrame.getIds();
    int length = ids.size() * 6;
    byte flags = httpSettingsFrame.isAck() ? HTTP_FLAG_ACK : 0;
    int streamId = 0;
    ByteBuf frame = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length);
    writeFrameHeader(frame, length, HTTP_SETTINGS_FRAME, flags, streamId);
    for (int id : ids) {
        frame.writeShort(id);
        frame.writeInt(httpSettingsFrame.getValue(id));
    }
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 PUSH_PROMISE Frame//from   w  w w.  j a v a 2  s .  c om
 */
public ByteBuf encodePushPromiseFrame(int streamId, int promisedStreamId, ByteBuf headerBlock) {
    boolean needsContinuations = headerBlock.readableBytes() > HTTP_MAX_LENGTH - 4;
    int length = needsContinuations ? HTTP_MAX_LENGTH - 4 : headerBlock.readableBytes();
    byte flags = needsContinuations ? 0 : HTTP_FLAG_END_HEADERS;
    ByteBuf header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + 4);
    writeFrameHeader(header, length + 4, HTTP_PUSH_PROMISE_FRAME, flags, streamId);
    header.writeInt(promisedStreamId);
    ByteBuf frame = Unpooled.wrappedBuffer(header, headerBlock.readSlice(length));
    if (needsContinuations) {
        while (headerBlock.readableBytes() > HTTP_MAX_LENGTH) {
            header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE);
            writeFrameHeader(header, HTTP_MAX_LENGTH, HTTP_CONTINUATION_FRAME, (byte) 0, streamId);
            frame = Unpooled.wrappedBuffer(frame, header, headerBlock.readSlice(HTTP_MAX_LENGTH));
        }
        header = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE);
        writeFrameHeader(header, headerBlock.readableBytes(), HTTP_CONTINUATION_FRAME, HTTP_FLAG_END_HEADERS,
                streamId);
        frame = Unpooled.wrappedBuffer(frame, header, headerBlock);
    }
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 PING Frame/*from ww w  . j ava  2s  . c  om*/
 */
public ByteBuf encodePingFrame(long data, boolean ack) {
    int length = 8;
    byte flags = ack ? HTTP_FLAG_ACK : 0;
    int streamId = 0;
    ByteBuf frame = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length);
    writeFrameHeader(frame, length, HTTP_PING_FRAME, flags, streamId);
    frame.writeLong(data);
    return frame;
}

From source file:com.twitter.http2.HttpFrameEncoder.java

License:Apache License

/**
 * Encode an HTTP/2 GOAWAY Frame//ww w .j  a v a 2s .  c o  m
 */
public ByteBuf encodeGoAwayFrame(int lastStreamId, int errorCode) {
    int length = 8;
    byte flags = 0;
    int streamId = 0;
    ByteBuf frame = Unpooled.buffer(HTTP_FRAME_HEADER_SIZE + length);
    writeFrameHeader(frame, length, HTTP_GOAWAY_FRAME, flags, streamId);
    frame.writeInt(lastStreamId);
    frame.writeInt(errorCode);
    return frame;
}