org.glassfish.grizzly.websockets.WebSocketFilter Maven / Gradle / Ivy
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package org.glassfish.grizzly.websockets;
import org.glassfish.grizzly.filterchain.FilterChainContext;
import org.glassfish.grizzly.filterchain.NextAction;
import org.glassfish.grizzly.http.HttpContent;
import org.glassfish.grizzly.http.HttpRequestPacket;
import java.io.IOException;
import org.glassfish.grizzly.http.HttpResponsePacket;
public class WebSocketFilter extends BaseWebSocketFilter {
// ------------------------------------------------------------ Constructors
public WebSocketFilter() {
super();
}
public WebSocketFilter(long wsTimeoutInSeconds) {
super(wsTimeoutInSeconds);
}
// ---------------------------------------- Methods from BaseWebSocketFilter
@Override
protected NextAction handleHandshake(FilterChainContext ctx, HttpContent content) throws IOException {
return handleServerHandshake(ctx, content);
}
// --------------------------------------------------------- Private Methods
/**
* Handle server-side websocket handshake
*
* @param ctx {@link FilterChainContext}
* @param requestContent HTTP message
* @throws {@link IOException}
*/
private NextAction handleServerHandshake(final FilterChainContext ctx,
final HttpContent requestContent)
throws IOException {
// get HTTP request headers
final HttpRequestPacket request = (HttpRequestPacket) requestContent.getHttpHeader();
try {
if (doServerUpgrade(ctx, requestContent)) {
return ctx.getInvokeAction(); // not a WS request, pass to the next filter.
}
setIdleTimeout(ctx);
} catch (HandshakeException e) {
ctx.write(composeHandshakeError(request, e));
throw e;
}
requestContent.recycle();
return ctx.getStopAction();
}
protected boolean doServerUpgrade(final FilterChainContext ctx,
final HttpContent requestContent) throws IOException {
return !WebSocketEngine.getEngine().upgrade(ctx, requestContent);
}
private static HttpResponsePacket composeHandshakeError(final HttpRequestPacket request,
final HandshakeException e) {
final HttpResponsePacket response = request.getResponse();
response.setStatus(e.getCode());
response.setReasonPhrase(e.getMessage());
return response;
}
}