-
-
Notifications
You must be signed in to change notification settings - Fork 748
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Fix for #400 streaming transport not working in Android 2.2/2.3 browser
- Loading branch information
Showing
1 changed file
with
124 additions
and
0 deletions.
There are no files selected for viewing
124 changes: 124 additions & 0 deletions
124
modules/cpr/src/main/java/org/atmosphere/interceptor/AndroidAtmosphereInterceptor.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,124 @@ | ||
/* | ||
* Copyright 2012 Jeanfrancois Arcand | ||
* | ||
* 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 | ||
* | ||
* 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 org.atmosphere.interceptor; | ||
|
||
import org.atmosphere.cpr.Action; | ||
import org.atmosphere.cpr.ApplicationConfig; | ||
import org.atmosphere.cpr.AsyncIOWriter; | ||
import org.atmosphere.cpr.AsyncIOWriterAdapter; | ||
import org.atmosphere.cpr.AtmosphereConfig; | ||
import org.atmosphere.cpr.AtmosphereInterceptor; | ||
import org.atmosphere.cpr.AtmosphereResource; | ||
import org.atmosphere.cpr.AtmosphereResource.TRANSPORT; | ||
import org.atmosphere.cpr.AtmosphereResourceEvent; | ||
import org.atmosphere.cpr.AtmosphereResourceEventListenerAdapter; | ||
import org.atmosphere.cpr.AtmosphereResponse; | ||
import org.slf4j.Logger; | ||
import org.slf4j.LoggerFactory; | ||
|
||
import java.io.IOException; | ||
import java.io.OutputStream; | ||
import java.io.PrintWriter; | ||
|
||
import static org.atmosphere.cpr.ApplicationConfig.PROPERTY_USE_STREAM; | ||
|
||
/** | ||
* Fix for the Android 2.2.x bogus HTTP implementation | ||
* | ||
* @author Jeanfrancois Arcand | ||
*/ | ||
public class AndroidAtmosphereInterceptor implements AtmosphereInterceptor { | ||
|
||
private static final Logger logger = LoggerFactory.getLogger(AndroidAtmosphereInterceptor.class); | ||
|
||
private static final byte[] padding; | ||
private static final String paddingText; | ||
static { | ||
StringBuffer whitespace = new StringBuffer(); | ||
for (int i = 0; i < 4096; i++) { | ||
whitespace.append(" "); | ||
} | ||
whitespace.append("\n"); | ||
paddingText = whitespace.toString(); | ||
padding = paddingText.getBytes(); | ||
} | ||
|
||
@Override | ||
public void configure(AtmosphereConfig config) { | ||
config.framework().addInitParameter(ApplicationConfig.STREAMING_PADDING_MODE, "whitespace"); | ||
} | ||
|
||
@Override | ||
public Action inspect(final AtmosphereResource r) { | ||
final AtmosphereResponse response = r.getResponse(); | ||
String userAgent = r.getRequest().getHeader("User-Agent"); | ||
|
||
if (r.transport().equals(TRANSPORT.STREAMING) && userAgent != null && userAgent.indexOf("Android 2.3") != -1) { | ||
response.asyncIOWriter(new AsyncIOWriterAdapter() { | ||
@Override | ||
public AsyncIOWriter redirect(String location) throws IOException { | ||
response.sendRedirect(location); | ||
return this; | ||
} | ||
|
||
@Override | ||
public AsyncIOWriter writeError(int errorCode, String message) throws IOException { | ||
response.sendError(errorCode); | ||
return this; | ||
} | ||
|
||
@Override | ||
public AsyncIOWriter write(String data) throws IOException { | ||
response.write(paddingText).write(data); | ||
return this; | ||
} | ||
|
||
@Override | ||
public AsyncIOWriter write(byte[] data) throws IOException { | ||
response.write(padding).write(data); | ||
return this; | ||
} | ||
|
||
@Override | ||
public AsyncIOWriter write(byte[] data, int offset, int length) throws IOException { | ||
response.write(padding).write(data, offset, length); | ||
return this; | ||
} | ||
|
||
@Override | ||
public void close() throws IOException { | ||
response.closeStreamOrWriter(); | ||
} | ||
|
||
@Override | ||
public AsyncIOWriter flush() throws IOException { | ||
response.flushBuffer(); | ||
return this; | ||
} | ||
}); | ||
} | ||
return Action.CONTINUE; | ||
} | ||
|
||
@Override | ||
public void postInspect(AtmosphereResource r) { | ||
} | ||
|
||
@Override | ||
public String toString() { | ||
return "Android Interceptor Support"; | ||
} | ||
} |