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A little bit of documentation

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This commit is contained in:
Trustin Lee 2010-01-09 12:12:50 +00:00
parent f67de23214
commit 4ab3e248e7
3 changed files with 38 additions and 25 deletions
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7
src/main/java/org/jboss/netty/example/http/websocket/WebSocketServer.java
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@ -22,6 +22,13 @@ import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
/**
* An HTTP server which serves Web Socket requests at:
*
* http://localhost:8080/websocket
*
* Open your browser at http://localhost:8080/, then the demo page will be
* loaded and a Web Socket connection will be made automatically.
*
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (trustin@gmail.com)
*

54
src/main/java/org/jboss/netty/example/http/websocket/WebSocketServerHandler.java
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@ -68,7 +68,7 @@ public class WebSocketServerHandler extends SimpleChannelUpstreamHandler {
return;
}
// Send the example web page.
// Send the demo page.
if (req.getUri().equals("/")) {
HttpResponse res = new DefaultHttpResponse(
HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
@ -86,34 +86,36 @@ public class WebSocketServerHandler extends SimpleChannelUpstreamHandler {
return;
}
// Serve the WebSocket connection.
if (req.getUri().equals(WEBSOCKET_PATH)) {
if (HttpHeaders.Values.UPGRADE.equalsIgnoreCase(req.getHeader(HttpHeaders.Names.CONNECTION)) &&
HttpHeaders.Values.WEBSOCKET.equalsIgnoreCase(req.getHeader(HttpHeaders.Names.UPGRADE))) {
HttpResponse res = new DefaultHttpResponse(
HttpVersion.HTTP_1_1,
new HttpResponseStatus(101, "Web Socket Protocol Handshake"));
res.addHeader(HttpHeaders.Names.UPGRADE, HttpHeaders.Values.WEBSOCKET);
res.addHeader(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.UPGRADE);
res.addHeader(HttpHeaders.Names.WEBSOCKET_ORIGIN, req.getHeader(HttpHeaders.Names.ORIGIN));
res.addHeader(HttpHeaders.Names.WEBSOCKET_LOCATION, getWebSocketLocation(req));
String protocol = req.getHeader(HttpHeaders.Names.WEBSOCKET_PROTOCOL);
if (protocol != null) {
res.addHeader(HttpHeaders.Names.WEBSOCKET_PROTOCOL, protocol);
}
// Serve the WebSocket handshake request.
if (req.getUri().equals(WEBSOCKET_PATH) &&
HttpHeaders.Values.UPGRADE.equalsIgnoreCase(req.getHeader(HttpHeaders.Names.CONNECTION)) &&
HttpHeaders.Values.WEBSOCKET.equalsIgnoreCase(req.getHeader(HttpHeaders.Names.UPGRADE))) {
ChannelPipeline p = ctx.getChannel().getPipeline();
p.remove("aggregator");
p.replace("decoder", "wsdecoder", new WebSocketFrameDecoder());
ctx.getChannel().write(res);
p.replace("encoder", "wsencoder", new WebSocketFrameEncoder());
return;
// Create the WebSocket handshake response.
HttpResponse res = new DefaultHttpResponse(
HttpVersion.HTTP_1_1,
new HttpResponseStatus(101, "Web Socket Protocol Handshake"));
res.addHeader(HttpHeaders.Names.UPGRADE, HttpHeaders.Values.WEBSOCKET);
res.addHeader(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.UPGRADE);
res.addHeader(HttpHeaders.Names.WEBSOCKET_ORIGIN, req.getHeader(HttpHeaders.Names.ORIGIN));
res.addHeader(HttpHeaders.Names.WEBSOCKET_LOCATION, getWebSocketLocation(req));
String protocol = req.getHeader(HttpHeaders.Names.WEBSOCKET_PROTOCOL);
if (protocol != null) {
res.addHeader(HttpHeaders.Names.WEBSOCKET_PROTOCOL, protocol);
}
// Upgrade the connection and send the handshake response.
ChannelPipeline p = ctx.getChannel().getPipeline();
p.remove("aggregator");
p.replace("decoder", "wsdecoder", new WebSocketFrameDecoder());
ctx.getChannel().write(res);
p.replace("encoder", "wsencoder", new WebSocketFrameEncoder());
return;
}
// Send an error page otherwise.
sendHttpResponse(
ctx, req, new DefaultHttpResponse(
HttpVersion.HTTP_1_1, HttpResponseStatus.FORBIDDEN));
@ -126,6 +128,7 @@ public class WebSocketServerHandler extends SimpleChannelUpstreamHandler {
}
private void sendHttpResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
// Generate an error page if response status code is not OK (200).
if (res.getStatus().getCode() != 200) {
res.setContent(
ChannelBuffers.copiedBuffer(
@ -135,6 +138,7 @@ public class WebSocketServerHandler extends SimpleChannelUpstreamHandler {
Integer.toString(res.getContent().readableBytes()));
}
// Send the response and close the connection if necessary.
ChannelFuture f = ctx.getChannel().write(res);
if (!req.isKeepAlive() || res.getStatus().getCode() != 200) {
f.addListener(ChannelFutureListener.CLOSE);

2
src/main/java/org/jboss/netty/example/http/websocket/WebSocketServerIndexPage.java
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@ -21,6 +21,8 @@ import org.jboss.netty.util.CharsetUtil;
/**
* Generates the demo HTML page which is served at http://localhost:8080/
*
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (trustin@gmail.com)
*