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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.io.Connection;
import org.eclipse.jetty.server.HttpConnection;
import org.eclipse.jetty.server.Request;
import javax.servlet.http.HttpServletRequest;
import java.util.Optional;
/**
* @author bjorncs
*/
public class RequestUtils {
private RequestUtils() {}
public static Connection getConnection(Request request) {
return request.getHttpChannel().getConnection();
}
public static Optional<HttpConnection> getHttp1Connection(Request request) {
Connection connection = getConnection(request);
if (connection instanceof HttpConnection) return Optional.of((HttpConnection) connection);
return Optional.empty();
}
public static JDiscServerConnector getConnector(Request request) {
return (JDiscServerConnector) request.getHttpChannel().getConnector();
}
/**
* 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(Request request) {
JDiscServerConnector connector = getConnector(request);
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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