I'm using Apache httpclient 4.3.6 and httpcore 4.3.3 (bundled with opensaml 3.3.0). I'm attempting to fetch a web page through a proxy via HTTPS but get a SocketTimeoutException every time. HTTP connections work fine. The specific timeout doesn't matter; it just takes longer to fail with higher values.
Sample code:
public class TestGet {
private static final int TIMEOUT = 7000;
public static void main(String[] args) throws Exception {
URL url = new URL("https://www.google.com");
URL proxy = new URL("https://myproxy:9090/");
try {
String s = get(url, proxy);
System.out.println(s);
} catch (Exception e) {
e.printStackTrace();
}
}
private static String get(URL url, URL proxy) throws IOException, URISyntaxException {
CloseableHttpClient client = HttpClients.createDefault();
HttpGet request = new HttpGet(url.toURI());
HttpHost host = null;
if (proxy != null) {
host = new HttpHost(proxy.getHost(), proxy.getPort(), proxy.getProtocol());
}
RequestConfig config = RequestConfig.custom()
.setProxy(host)
.setConnectionRequestTimeout(TIMEOUT)
.setConnectTimeout(TIMEOUT)
.setSocketTimeout(TIMEOUT)
.build();
request.setConfig(config);
try {
CloseableHttpResponse response = client.execute(request);
try {
System.out.println(response.getStatusLine());
return EntityUtils.toString(response.getEntity());
} finally {
response.close();
}
} finally {
client.close();
}
}
}
The exception is thrown when trying to connect to the proxy. The stack trace is
org.apache.http.conn.ConnectTimeoutException: Connect to <proxy> failed: Read timed out
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:134)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:319)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:371)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
at authentication.TestGet.get(TestGet.java:47)
at authentication.TestGet.main(TestGet.java:22)
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at sun.security.ssl.InputRecord.readFully(Unknown Source)
at sun.security.ssl.InputRecord.read(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:290)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:259)
at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:125)
... 11 more
This looks a lot like Apache issue HTTPCLIENT-1478 which had to do with the socket timeout not being set. That bug was marked fixed in 4.3.4 (I'm using 4.3.6) and while some of the comments indicate that work-arounds are still necessary in later versions, they aren't working for me. More to the point, I've stepped into SSLConnectionSocketFactory.createConnection() and confirmed that the socket timeout is being set to a non-zero value.
I'm stuck. I don't know why the connection is failing and haven't been able to step any deeper than the call to SSLSocketImpl.startHandshake() to troubleshoot. What could be wrong, and how do I fix it?
