/
SockJsHttpRequestHandler.java
156 lines (130 loc) · 4.93 KB
/
SockJsHttpRequestHandler.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/*
* Copyright 2002-2019 the original author or authors.
*
* Licensed 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 org.springframework.web.socket.sockjs.support;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.Lifecycle;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.web.HttpRequestHandler;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.CorsConfigurationSource;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.handler.ExceptionWebSocketHandlerDecorator;
import org.springframework.web.socket.handler.LoggingWebSocketHandlerDecorator;
import org.springframework.web.socket.sockjs.SockJsException;
import org.springframework.web.socket.sockjs.SockJsService;
/**
* An {@link HttpRequestHandler} that allows mapping a {@link SockJsService} to requests
* in a Servlet container.
*
* @author Rossen Stoyanchev
* @author Sebastien Deleuze
* @since 4.0
*/
public class SockJsHttpRequestHandler
implements HttpRequestHandler, CorsConfigurationSource, Lifecycle, ServletContextAware {
// No logging: HTTP transports too verbose and we don't know enough to log anything of value
private final SockJsService sockJsService;
private final WebSocketHandler webSocketHandler;
private volatile boolean running = false;
/**
* Create a new SockJsHttpRequestHandler.
* @param sockJsService the SockJS service
* @param webSocketHandler the websocket handler
*/
public SockJsHttpRequestHandler(SockJsService sockJsService, WebSocketHandler webSocketHandler) {
Assert.notNull(sockJsService, "SockJsService must not be null");
Assert.notNull(webSocketHandler, "WebSocketHandler must not be null");
this.sockJsService = sockJsService;
this.webSocketHandler =
new ExceptionWebSocketHandlerDecorator(new LoggingWebSocketHandlerDecorator(webSocketHandler));
}
/**
* Return the {@link SockJsService}.
*/
public SockJsService getSockJsService() {
return this.sockJsService;
}
/**
* Return the {@link WebSocketHandler}.
*/
public WebSocketHandler getWebSocketHandler() {
return this.webSocketHandler;
}
@Override
public void setServletContext(ServletContext servletContext) {
if (this.sockJsService instanceof ServletContextAware) {
((ServletContextAware) this.sockJsService).setServletContext(servletContext);
}
}
@Override
public void start() {
if (!isRunning()) {
this.running = true;
if (this.sockJsService instanceof Lifecycle) {
((Lifecycle) this.sockJsService).start();
}
}
}
@Override
public void stop() {
if (isRunning()) {
this.running = false;
if (this.sockJsService instanceof Lifecycle) {
((Lifecycle) this.sockJsService).stop();
}
}
}
@Override
public boolean isRunning() {
return this.running;
}
@Override
public void handleRequest(HttpServletRequest servletRequest, HttpServletResponse servletResponse)
throws ServletException, IOException {
ServerHttpRequest request = new ServletServerHttpRequest(servletRequest);
ServerHttpResponse response = new ServletServerHttpResponse(servletResponse);
try {
this.sockJsService.handleRequest(request, response, getSockJsPath(servletRequest), this.webSocketHandler);
}
catch (Exception ex) {
throw new SockJsException("Uncaught failure in SockJS request, uri=" + request.getURI(), ex);
}
}
private String getSockJsPath(HttpServletRequest servletRequest) {
String attribute = HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE;
String path = (String) servletRequest.getAttribute(attribute);
return (path.length() > 0 && path.charAt(0) != '/' ? "/" + path : path);
}
@Override
@Nullable
public CorsConfiguration getCorsConfiguration(HttpServletRequest request) {
if (this.sockJsService instanceof CorsConfigurationSource) {
return ((CorsConfigurationSource) this.sockJsService).getCorsConfiguration(request);
}
return null;
}
}