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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.http.server.jetty;
import org.eclipse.jetty.server.HttpConnection;
import javax.servlet.http.HttpServletRequest;
/**
* @author bjorncs
*/
public class HttpServletRequestUtils {
private HttpServletRequestUtils() {}
public static HttpConnection getConnection(HttpServletRequest request) {
return (HttpConnection)request.getAttribute("org.eclipse.jetty.server.HttpConnection");
}
/**
* Note: {@link HttpServletRequest#getLocalPort()} may return the local port of the load balancer / reverse proxy if proxy-protocol is enabled.
* @return the actual local port of the underlying Jetty connector
*/
public static int getConnectorLocalPort(HttpServletRequest request) {
JDiscServerConnector connector = (JDiscServerConnector) getConnection(request).getConnector();
int actualLocalPort = connector.getLocalPort();
int localPortIfConnectorUnopened = -1;
int localPortIfConnectorClosed = -2;
if (actualLocalPort == localPortIfConnectorUnopened || actualLocalPort == localPortIfConnectorClosed) {
int configuredLocalPort = connector.listenPort();
int localPortEphemeralPort = 0;
if (configuredLocalPort == localPortEphemeralPort) {
throw new IllegalStateException("Unable to determine connector's listen port");
}
return configuredLocalPort;
}
return actualLocalPort;
}
}
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