62 |
public class HTTPURLConnection |
public class HTTPURLConnection |
63 |
extends HttpURLConnection |
extends HttpURLConnection |
64 |
{ |
{ |
65 |
|
|
66 |
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/** |
67 |
|
* Pool of reusable connections, used if keepAlive is true. |
68 |
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*/ |
69 |
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private static final Map connectionPool = new LinkedHashMap(); |
70 |
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|
71 |
/* |
/* |
72 |
* The underlying connection. |
* The underlying connection. |
75 |
|
|
76 |
private String proxyHostname; |
private String proxyHostname; |
77 |
private int proxyPort; |
private int proxyPort; |
78 |
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private String agent; |
79 |
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private boolean keepAlive; |
80 |
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private int maxConnections; |
81 |
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|
82 |
private Request request; |
private Request request; |
83 |
private Headers requestHeaders; |
private Headers requestHeaders; |
95 |
{ |
{ |
96 |
super(url); |
super(url); |
97 |
requestHeaders = new Headers(); |
requestHeaders = new Headers(); |
98 |
AccessController.doPrivileged(this.new GetProxyAction()); |
AccessController.doPrivileged(this.new GetHTTPPropertiesAction()); |
99 |
} |
} |
100 |
|
|
101 |
class GetProxyAction |
class GetHTTPPropertiesAction |
102 |
implements PrivilegedAction |
implements PrivilegedAction |
103 |
{ |
{ |
104 |
|
|
105 |
public Object run() |
public Object run() |
106 |
{ |
{ |
107 |
proxyHostname = System.getProperty("http.proxyHost"); |
proxyHostname = System.getProperty("http.proxyHost"); |
108 |
if (proxyHostname != null) |
if (proxyHostname != null && proxyHostname.length() > 0) |
109 |
{ |
{ |
110 |
String port = System.getProperty("http.proxyPort"); |
String port = System.getProperty("http.proxyPort"); |
111 |
proxyPort = (port != null) ? Integer.parseInt (port) : -1; |
if (port != null && port.length() > 0) |
112 |
|
{ |
113 |
|
proxyPort = Integer.parseInt(port); |
114 |
|
} |
115 |
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else |
116 |
|
{ |
117 |
|
proxyHostname = null; |
118 |
|
proxyPort = -1; |
119 |
|
} |
120 |
} |
} |
121 |
|
agent = System.getProperty("http.agent"); |
122 |
|
String ka = System.getProperty("http.keepAlive"); |
123 |
|
keepAlive = !(ka != null && "false".equals(ka)); |
124 |
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String mc = System.getProperty("http.maxConnections"); |
125 |
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maxConnections = (mc != null && mc.length() > 0) ? |
126 |
|
Math.max(Integer.parseInt(mc), 1) : 5; |
127 |
return null; |
return null; |
128 |
} |
} |
129 |
|
|
166 |
retry = false; |
retry = false; |
167 |
if (connection == null) |
if (connection == null) |
168 |
{ |
{ |
169 |
connection = new HTTPConnection(host, port, secure); |
connection = getConnection(host, port, secure); |
170 |
} |
} |
171 |
if (proxyHostname != null) |
if (proxyHostname != null) |
172 |
{ |
{ |
178 |
connection.setProxy(proxyHostname, proxyPort); |
connection.setProxy(proxyHostname, proxyPort); |
179 |
} |
} |
180 |
request = connection.newRequest(method, file); |
request = connection.newRequest(method, file); |
181 |
|
if (!keepAlive) |
182 |
|
{ |
183 |
|
request.setHeader("Connection", "close"); |
184 |
|
} |
185 |
|
if (agent != null) |
186 |
|
{ |
187 |
|
request.setHeader("User-Agent", agent); |
188 |
|
} |
189 |
request.getHeaders().putAll(requestHeaders); |
request.getHeaders().putAll(requestHeaders); |
190 |
if (requestSink != null) |
if (requestSink != null) |
191 |
{ |
{ |
270 |
connected = true; |
connected = true; |
271 |
} |
} |
272 |
|
|
273 |
|
/** |
274 |
|
* Returns a connection, from the pool if necessary. |
275 |
|
*/ |
276 |
|
HTTPConnection getConnection(String host, int port, boolean secure) |
277 |
|
throws IOException |
278 |
|
{ |
279 |
|
HTTPConnection connection; |
280 |
|
if (keepAlive) |
281 |
|
{ |
282 |
|
StringBuffer buf = new StringBuffer(secure ? "https://" : "http://"); |
283 |
|
buf.append(host); |
284 |
|
buf.append(':'); |
285 |
|
buf.append(port); |
286 |
|
String key = buf.toString(); |
287 |
|
synchronized (connectionPool) |
288 |
|
{ |
289 |
|
connection = (HTTPConnection) connectionPool.get(key); |
290 |
|
if (connection == null) |
291 |
|
{ |
292 |
|
connection = new HTTPConnection(host, port, secure); |
293 |
|
// Good housekeeping |
294 |
|
if (connectionPool.size() == maxConnections) |
295 |
|
{ |
296 |
|
// maxConnections must always be >= 1 |
297 |
|
Object lru = connectionPool.keySet().iterator().next(); |
298 |
|
connectionPool.remove(lru); |
299 |
|
} |
300 |
|
connectionPool.put(key, connection); |
301 |
|
} |
302 |
|
} |
303 |
|
} |
304 |
|
else |
305 |
|
{ |
306 |
|
connection = new HTTPConnection(host, port, secure); |
307 |
|
} |
308 |
|
return connection; |
309 |
|
} |
310 |
|
|
311 |
public void disconnect() |
public void disconnect() |
312 |
{ |
{ |
313 |
if (connection != null) |
if (connection != null) |