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/*
* 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:
*
* https://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.websocketx;
import io.netty.handler.codec.http.HttpHeaders;
import java.net.URI;
import static io.netty.handler.codec.http.websocketx.WebSocketVersion.*;
/**
* Creates a new {@link WebSocketClientHandshaker} of desired protocol version.
*/
public final class WebSocketClientHandshakerFactory {
/**
* Private constructor so this static class cannot be instanced.
*/
private WebSocketClientHandshakerFactory() {
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders) {
return newHandshaker(webSocketURL, version, subprotocol, allowExtensions, customHeaders, 65536);
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
* @param maxFramePayloadLength
* Maximum allowable frame payload length. Setting this value to your application's
* requirement may reduce denial of service attacks using long data frames.
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength) {
return newHandshaker(webSocketURL, version, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, true, false);
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
* @param maxFramePayloadLength
* Maximum allowable frame payload length. Setting this value to your application's
* requirement may reduce denial of service attacks using long data frames.
* @param performMasking
* Whether to mask all written websocket frames. This must be set to true in order to be fully compatible
* with the websocket specifications. Client applications that communicate with a non-standard server
* which doesn't require masking might set this to false to achieve a higher performance.
* @param allowMaskMismatch
* When set to true, frames which are not masked properly according to the standard will still be
* accepted.
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength,
boolean performMasking, boolean allowMaskMismatch) {
return newHandshaker(webSocketURL, version, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, -1);
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
* @param maxFramePayloadLength
* Maximum allowable frame payload length. Setting this value to your application's
* requirement may reduce denial of service attacks using long data frames.
* @param performMasking
* Whether to mask all written websocket frames. This must be set to true in order to be fully compatible
* with the websocket specifications. Client applications that communicate with a non-standard server
* which doesn't require masking might set this to false to achieve a higher performance.
* @param allowMaskMismatch
* When set to true, frames which are not masked properly according to the standard will still be
* accepted.
* @param forceCloseTimeoutMillis
* Close the connection if it was not closed by the server after timeout specified
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength,
boolean performMasking, boolean allowMaskMismatch, long forceCloseTimeoutMillis) {
if (version == V13) {
return new WebSocketClientHandshaker13(
webSocketURL, V13, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis);
}
if (version == V08) {
return new WebSocketClientHandshaker08(
webSocketURL, V08, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis);
}
if (version == V07) {
return new WebSocketClientHandshaker07(
webSocketURL, V07, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis);
}
if (version == V00) {
return new WebSocketClientHandshaker00(
webSocketURL, V00, subprotocol, customHeaders, maxFramePayloadLength, forceCloseTimeoutMillis);
}
throw new WebSocketClientHandshakeException("Protocol version " + version + " not supported.");
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
* @param maxFramePayloadLength
* Maximum allowable frame payload length. Setting this value to your application's
* requirement may reduce denial of service attacks using long data frames.
* @param performMasking
* Whether to mask all written websocket frames. This must be set to true in order to be fully compatible
* with the websocket specifications. Client applications that communicate with a non-standard server
* which doesn't require masking might set this to false to achieve a higher performance.
* @param allowMaskMismatch
* When set to true, frames which are not masked properly according to the standard will still be
* accepted.
* @param forceCloseTimeoutMillis
* Close the connection if it was not closed by the server after timeout specified
* @param absoluteUpgradeUrl
* Use an absolute url for the Upgrade request, typically when connecting through an HTTP proxy over
* clear HTTP
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength,
boolean performMasking, boolean allowMaskMismatch, long forceCloseTimeoutMillis, boolean absoluteUpgradeUrl) {
if (version == V13) {
return new WebSocketClientHandshaker13(
webSocketURL, V13, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis, absoluteUpgradeUrl);
}
if (version == V08) {
return new WebSocketClientHandshaker08(
webSocketURL, V08, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis, absoluteUpgradeUrl);
}
if (version == V07) {
return new WebSocketClientHandshaker07(
webSocketURL, V07, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis, absoluteUpgradeUrl);
}
if (version == V00) {
return new WebSocketClientHandshaker00(
webSocketURL, V00, subprotocol, customHeaders,
maxFramePayloadLength, forceCloseTimeoutMillis, absoluteUpgradeUrl);
}
throw new WebSocketClientHandshakeException("Protocol version " + version + " not supported.");
}
/**
* Creates a new handshaker.
*
* @param webSocketURL
* URL for web socket communications. e.g "ws://myhost.com/mypath".
* Subsequent web socket frames will be sent to this URL.
* @param version
* Version of web socket specification to use to connect to the server
* @param subprotocol
* Sub protocol request sent to the server. Null if no sub-protocol support is required.
* @param allowExtensions
* Allow extensions to be used in the reserved bits of the web socket frame
* @param customHeaders
* Custom HTTP headers to send during the handshake
* @param maxFramePayloadLength
* Maximum allowable frame payload length. Setting this value to your application's
* requirement may reduce denial of service attacks using long data frames.
* @param performMasking
* Whether to mask all written websocket frames. This must be set to true in order to be fully compatible
* with the websocket specifications. Client applications that communicate with a non-standard server
* which doesn't require masking might set this to false to achieve a higher performance.
* @param allowMaskMismatch
* When set to true, frames which are not masked properly according to the standard will still be
* accepted.
* @param forceCloseTimeoutMillis
* Close the connection if it was not closed by the server after timeout specified
* @param absoluteUpgradeUrl
* Use an absolute url for the Upgrade request, typically when connecting through an HTTP proxy over
* clear HTTP
* @param generateOriginHeader
* Allows to generate the `Origin`|`Sec-WebSocket-Origin` header value for handshake request
* according to the given webSocketURL
*/
public static WebSocketClientHandshaker newHandshaker(
URI webSocketURL, WebSocketVersion version, String subprotocol,
boolean allowExtensions, HttpHeaders customHeaders, int maxFramePayloadLength,
boolean performMasking, boolean allowMaskMismatch, long forceCloseTimeoutMillis,
boolean absoluteUpgradeUrl, boolean generateOriginHeader) {
if (version == V13) {
return new WebSocketClientHandshaker13(
webSocketURL, V13, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis,
absoluteUpgradeUrl, generateOriginHeader);
}
if (version == V08) {
return new WebSocketClientHandshaker08(
webSocketURL, V08, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis,
absoluteUpgradeUrl, generateOriginHeader);
}
if (version == V07) {
return new WebSocketClientHandshaker07(
webSocketURL, V07, subprotocol, allowExtensions, customHeaders,
maxFramePayloadLength, performMasking, allowMaskMismatch, forceCloseTimeoutMillis,
absoluteUpgradeUrl, generateOriginHeader);
}
if (version == V00) {
return new WebSocketClientHandshaker00(
webSocketURL, V00, subprotocol, customHeaders,
maxFramePayloadLength, forceCloseTimeoutMillis, absoluteUpgradeUrl, generateOriginHeader);
}
throw new WebSocketClientHandshakeException("Protocol version " + version + " not supported.");
}
}
