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Java example source code file (Http2Stream.java)
The Http2Stream.java Java example source code/* * Copyright 2014 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.http2; import io.netty.util.internal.UnstableApi; /** * A single stream within an HTTP2 connection. Streams are compared to each other by priority. */ @UnstableApi public interface Http2Stream { /** * The allowed states of an HTTP2 stream. */ enum State { IDLE(false, false), RESERVED_LOCAL(false, false), RESERVED_REMOTE(false, false), OPEN(true, true), HALF_CLOSED_LOCAL(false, true), HALF_CLOSED_REMOTE(true, false), CLOSED(false, false); private final boolean localSideOpen; private final boolean remoteSideOpen; State(boolean localSideOpen, boolean remoteSideOpen) { this.localSideOpen = localSideOpen; this.remoteSideOpen = remoteSideOpen; } /** * Indicates whether the local side of this stream is open (i.e. the state is either * {@link State#OPEN} or {@link State#HALF_CLOSED_REMOTE}). */ public boolean localSideOpen() { return localSideOpen; } /** * Indicates whether the remote side of this stream is open (i.e. the state is either * {@link State#OPEN} or {@link State#HALF_CLOSED_LOCAL}). */ public boolean remoteSideOpen() { return remoteSideOpen; } } /** * Gets the unique identifier for this stream within the connection. */ int id(); /** * Gets the state of this stream. */ State state(); /** * Opens this stream, making it available via {@link Http2Connection#forEachActiveStream(Http2StreamVisitor)} and * transition state to: * <ul> * <li>{@link State#OPEN} if {@link #state()} is {@link State#IDLE} and {@code halfClosed} is {@code false}. * <li>{@link State#HALF_CLOSED_LOCAL} if {@link #state()} is {@link State#IDLE} and {@code halfClosed} * is {@code true} and the stream is local.</li> * <li>{@link State#HALF_CLOSED_REMOTE} if {@link #state()} is {@link State#IDLE} and {@code halfClosed} * is {@code true} and the stream is remote.</li> * <li>{@link State#RESERVED_LOCAL} if {@link #state()} is {@link State#HALF_CLOSED_REMOTE}. * <li>{@link State#RESERVED_REMOTE} if {@link #state()} is {@link State#HALF_CLOSED_LOCAL}. * </ul> */ Http2Stream open(boolean halfClosed) throws Http2Exception; /** * Closes the stream. */ Http2Stream close(); /** * Closes the local side of this stream. If this makes the stream closed, the child is closed as * well. */ Http2Stream closeLocalSide(); /** * Closes the remote side of this stream. If this makes the stream closed, the child is closed * as well. */ Http2Stream closeRemoteSide(); /** * Indicates whether a {@code RST_STREAM} frame has been sent from the local endpoint for this stream. */ boolean isResetSent(); /** * Sets the flag indicating that a {@code RST_STREAM} frame has been sent from the local endpoint * for this stream. This does not affect the stream state. */ Http2Stream resetSent(); /** * Associates the application-defined data with this stream. * @return The value that was previously associated with {@code key}, or {@code null} if there was none. */ <V> V setProperty(Http2Connection.PropertyKey key, V value); /** * Returns application-defined data if any was associated with this stream. */ <V> V getProperty(Http2Connection.PropertyKey key); /** * Returns and removes application-defined data if any was associated with this stream. */ <V> V removeProperty(Http2Connection.PropertyKey key); /** * Updates an priority for this stream. Calling this method may affect the structure of the * priority tree. * * @param parentStreamId the parent stream that given stream should depend on. May be {@code 0}, * if the stream has no dependencies and should be an immediate child of the * connection. * @param weight the weight to be assigned to this stream relative to its parent. This value * must be between 1 and 256 (inclusive) * @param exclusive indicates that the stream should be the exclusive dependent on its parent. * This only applies if the stream has a parent. * @return this stream. */ Http2Stream setPriority(int parentStreamId, short weight, boolean exclusive) throws Http2Exception; /** * Indicates whether or not this stream is the root node of the priority tree. */ boolean isRoot(); /** * Indicates whether or not this is a leaf node (i.e. {@link #numChildren} is 0) of the priority tree. */ boolean isLeaf(); /** * Returns weight assigned to the dependency with the parent. The weight will be a value * between 1 and 256. */ short weight(); /** * The parent (i.e. the node in the priority tree on which this node depends), or {@code null} * if this is the root node (i.e. the connection, itself). */ Http2Stream parent(); /** * Indicates whether or not this stream is a descendant in the priority tree from the given stream. */ boolean isDescendantOf(Http2Stream stream); /** * Returns the number of child streams directly dependent on this stream. */ int numChildren(); /** * Provide a means of iterating over the children of this stream. * * @param visitor The visitor which will visit each child stream. * @return The stream before iteration stopped or {@code null} if iteration went past the end. */ Http2Stream forEachChild(Http2StreamVisitor visitor) throws Http2Exception; } Other Java examples (source code examples)Here is a short list of links related to this Java Http2Stream.java source code file: |
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