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NUTCH-2447 Work-around SSLProtocolException: handshake alert: unrecognized_name #305

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Mar 27, 2018
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NUTCH-2447 Work-around SSLProtocolException: handshake alert: unrecognized_name #305

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70 changes: 48 additions & 22 deletions src/plugin/protocol-http/src/java/org/apache/nutch/protocol/http/HttpResponse.java
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Original file line number Diff line number Diff line change
Expand Up @@ -124,28 +124,29 @@ public HttpResponse(HttpBase http, URL url, CrawlDatum datum)
socket.connect(sockAddr, http.getTimeout());

if (scheme == Scheme.HTTPS) {
SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory
.getDefault();
SSLSocket sslsocket = (SSLSocket) factory
.createSocket(socket, sockHost, sockPort, true);
sslsocket.setUseClientMode(true);

// Get the protocols and ciphers supported by this JVM
Set<String> protocols = new HashSet<String>(
Arrays.asList(sslsocket.getSupportedProtocols()));
Set<String> ciphers = new HashSet<String>(
Arrays.asList(sslsocket.getSupportedCipherSuites()));

// Intersect with preferred protocols and ciphers
protocols.retainAll(http.getTlsPreferredProtocols());
ciphers.retainAll(http.getTlsPreferredCipherSuites());

sslsocket.setEnabledProtocols(
protocols.toArray(new String[protocols.size()]));
sslsocket.setEnabledCipherSuites(
ciphers.toArray(new String[ciphers.size()]));

sslsocket.startHandshake();
SSLSocket sslsocket = null;

try {
sslsocket = getSSLSocket(socket, sockHost, sockPort);
sslsocket.startHandshake();
} catch (IOException e) {
Http.LOG.debug("SSL connection to {} failed with: {}", url,
e.getMessage());
if ("handshake alert: unrecognized_name".equals(e.getMessage())) {
try {
// Reconnect, see NUTCH-2447
socket = new Socket();
socket.setSoTimeout(http.getTimeout());
socket.connect(sockAddr, http.getTimeout());
sslsocket = getSSLSocket(socket, "", sockPort);
sslsocket.startHandshake();
} catch (IOException ex) {
String msg = "SSL reconnect to " + url + " failed with: "
+ e.getMessage();
throw new HttpException(msg);
}
}
}
socket = sslsocket;
}

Expand Down Expand Up @@ -318,6 +319,31 @@ public byte[] getContent() {
* -------------------------
*/

private SSLSocket getSSLSocket(Socket socket, String sockHost, int sockPort) throws IOException {
SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory
.getDefault();
SSLSocket sslsocket = (SSLSocket) factory
.createSocket(socket, sockHost, sockPort, true);
sslsocket.setUseClientMode(true);

// Get the protocols and ciphers supported by this JVM
Set<String> protocols = new HashSet<String>(
Arrays.asList(sslsocket.getSupportedProtocols()));
Set<String> ciphers = new HashSet<String>(
Arrays.asList(sslsocket.getSupportedCipherSuites()));

// Intersect with preferred protocols and ciphers
protocols.retainAll(http.getTlsPreferredProtocols());
ciphers.retainAll(http.getTlsPreferredCipherSuites());

sslsocket.setEnabledProtocols(
protocols.toArray(new String[protocols.size()]));
sslsocket.setEnabledCipherSuites(
ciphers.toArray(new String[ciphers.size()]));

return sslsocket;
}

private void readPlainContent(InputStream in)
throws HttpException, IOException {

Expand Down