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19 package org.eclipse.jetty.alpn.server;
20
21 import java.util.Collections;
22 import java.util.List;
23 import javax.net.ssl.SSLEngine;
24
25 import org.eclipse.jetty.alpn.ALPN;
26 import org.eclipse.jetty.io.EndPoint;
27 import org.eclipse.jetty.server.Connector;
28 import org.eclipse.jetty.server.NegotiatingServerConnection;
29 import org.eclipse.jetty.util.log.Log;
30 import org.eclipse.jetty.util.log.Logger;
31
32 public class ALPNServerConnection extends NegotiatingServerConnection implements ALPN.ServerProvider
33 {
34 private static final Logger LOG = Log.getLogger(ALPNServerConnection.class);
35
36 public ALPNServerConnection(Connector connector, EndPoint endPoint, SSLEngine engine, List<String> protocols, String defaultProtocol)
37 {
38 super(connector, endPoint, engine, protocols, defaultProtocol);
39 ALPN.put(engine, this);
40 }
41
42 @Override
43 public void unsupported()
44 {
45 select(Collections.<String>emptyList());
46 }
47
48 @Override
49 public String select(List<String> clientProtocols)
50 {
51 List<String> serverProtocols = getProtocols();
52 String negotiated = null;
53 for (String clientProtocol : clientProtocols)
54 {
55 if (serverProtocols.contains(clientProtocol))
56 {
57 negotiated = clientProtocol;
58 break;
59 }
60 }
61 if (negotiated == null)
62 {
63 negotiated = getDefaultProtocol();
64 }
65 if (LOG.isDebugEnabled())
66 LOG.debug("{} protocol selected {}", this, negotiated);
67 setProtocol(negotiated);
68 ALPN.remove(getSSLEngine());
69 return negotiated;
70 }
71
72 @Override
73 public void close()
74 {
75 ALPN.remove(getSSLEngine());
76 super.close();
77 }
78 }