1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.server;
20
21 import java.io.IOException;
22
23 import org.eclipse.jetty.http.Generator;
24 import org.eclipse.jetty.http.HttpException;
25 import org.eclipse.jetty.http.HttpStatus;
26 import org.eclipse.jetty.http.Parser;
27 import org.eclipse.jetty.io.Connection;
28 import org.eclipse.jetty.io.EndPoint;
29 import org.eclipse.jetty.util.log.Log;
30 import org.eclipse.jetty.util.log.Logger;
31
32
33 /* ------------------------------------------------------------ */
34 /** Blocking Server HTTP Connection
35 */
36 public class BlockingHttpConnection extends AbstractHttpConnection
37 {
38 private static final Logger LOG = Log.getLogger(BlockingHttpConnection.class);
39
40 public BlockingHttpConnection(Connector connector, EndPoint endpoint, Server server)
41 {
42 super(connector,endpoint,server);
43 }
44
45 public BlockingHttpConnection(Connector connector, EndPoint endpoint, Server server, Parser parser, Generator generator, Request request)
46 {
47 super(connector,endpoint,server,parser,generator,request);
48 }
49
50 @Override
51 protected void handleRequest() throws IOException
52 {
53 super.handleRequest();
54 }
55
56 public Connection handle() throws IOException
57 {
58 Connection connection = this;
59
60 try
61 {
62 setCurrentConnection(this);
63
64 // do while the endpoint is open
65 // AND the connection has not changed
66 while (_endp.isOpen() && connection==this)
67 {
68 try
69 {
70 // If we are not ended then parse available
71 if (!_parser.isComplete() && !_endp.isInputShutdown())
72 _parser.parseAvailable();
73
74 // Do we have more generating to do?
75 // Loop here because some writes may take multiple steps and
76 // we need to flush them all before potentially blocking in the
77 // next loop.
78 if (_generator.isCommitted() && !_generator.isComplete() && !_endp.isOutputShutdown())
79 _generator.flushBuffer();
80
81 // Flush buffers
82 _endp.flush();
83 }
84 catch (HttpException e)
85 {
86 if (LOG.isDebugEnabled())
87 {
88 LOG.debug("uri="+_uri);
89 LOG.debug("fields="+_requestFields);
90 LOG.debug(e);
91 }
92 _generator.sendError(e.getStatus(), e.getReason(), null, true);
93 _parser.reset();
94 _endp.shutdownOutput();
95 }
96 finally
97 {
98 // Is this request/response round complete and are fully flushed?
99 if (_parser.isComplete() && _generator.isComplete())
100 {
101 // Reset the parser/generator
102 reset();
103
104 // look for a switched connection instance?
105 if (_response.getStatus()==HttpStatus.SWITCHING_PROTOCOLS_101)
106 {
107 Connection switched=(Connection)_request.getAttribute("org.eclipse.jetty.io.Connection");
108 if (switched!=null)
109 connection=switched;
110 }
111
112 // TODO Is this required?
113 if (!_generator.isPersistent() && !_endp.isOutputShutdown())
114 {
115 LOG.warn("Safety net oshut!!! Please open a bugzilla");
116 _endp.shutdownOutput();
117 }
118 }
119
120 // If we don't have a committed response and we are not suspended
121 if (_endp.isInputShutdown() && _generator.isIdle() && !_request.getAsyncContinuation().isSuspended())
122 {
123 // then no more can happen, so close.
124 _endp.close();
125 }
126 }
127 }
128
129 return connection;
130 }
131 finally
132 {
133 setCurrentConnection(null);
134 _parser.returnBuffers();
135 _generator.returnBuffers();
136 }
137 }
138 }