public void run() {
HttpPost httpPost =
new HttpPost(initParams.getRemoteContactPointEncoded(lastReceivedTimestamp));
//
httpPost.getParams().setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, Boolean.FALSE);
//
HttpResponse response = null; // This is acting as keep alive.
//
while (isActive()) {
try {
Thread.sleep(KEEP_ALIVE_PERIOD);
httpPost.setEntity(new UrlEncodedFormEntity(postParameters, HTTP.UTF_8));
response = null;
response = httpclient.execute(httpPost);
int status = response.getStatusLine().getStatusCode();
if (status != RestStreamHanlder.SUCCESS_200) {
logger.error(
"Cant register to the remote client, retrying in:"
+ (KEEP_ALIVE_PERIOD / 1000)
+ " seconds.");
structure = registerAndGetStructure();
}
} catch (Exception e) {
logger.warn(e.getMessage(), e);
} finally {
if (response != null) {
try {
response.getEntity().getContent().close();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
}
}
}
}
public DataField[] registerAndGetStructure() throws IOException, ClassNotFoundException {
// Create the POST request
HttpPost httpPost =
new HttpPost(initParams.getRemoteContactPointEncoded(lastReceivedTimestamp));
// Add the POST parameters
httpPost.setEntity(new UrlEncodedFormEntity(postParameters, HTTP.UTF_8));
//
httpPost.getParams().setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, Boolean.FALSE);
// Create local execution context
HttpContext localContext = new BasicHttpContext();
//
NotificationRegistry.getInstance().addNotification(uid, this);
int tries = 0;
AuthState authState = null;
//
while (tries < 2) {
tries++;
HttpResponse response = null;
try {
// Execute the POST request
response = httpclient.execute(httpPost, localContext);
//
int sc = response.getStatusLine().getStatusCode();
//
if (sc == HttpStatus.SC_OK) {
logger.debug(
new StringBuilder()
.append("Wants to consume the structure packet from ")
.append(initParams.getRemoteContactPoint())
.toString());
structure = (DataField[]) XSTREAM.fromXML(response.getEntity().getContent());
logger.debug("Connection established for: " + initParams.getRemoteContactPoint());
break;
} else {
if (sc == HttpStatus.SC_UNAUTHORIZED)
authState =
(AuthState)
localContext.getAttribute(
ClientContext.TARGET_AUTH_STATE); // Target host authentication required
else if (sc == HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED)
authState =
(AuthState)
localContext.getAttribute(
ClientContext.PROXY_AUTH_STATE); // Proxy authentication required
else {
logger.error(
new StringBuilder()
.append("Unexpected POST status code returned: ")
.append(sc)
.append("\nreason: ")
.append(response.getStatusLine().getReasonPhrase())
.toString());
}
if (authState != null) {
if (initParams.getUsername() == null
|| (tries > 1 && initParams.getUsername() != null)) {
logger.error(
"A valid username/password required to connect to the remote host: "
+ initParams.getRemoteContactPoint());
} else {
AuthScope authScope = authState.getAuthScope();
logger.warn(
new StringBuilder()
.append("Setting Credentials for host: ")
.append(authScope.getHost())
.append(":")
.append(authScope.getPort())
.toString());
Credentials creds =
new UsernamePasswordCredentials(
initParams.getUsername(), initParams.getPassword());
httpclient.getCredentialsProvider().setCredentials(authScope, creds);
}
}
}
} catch (RuntimeException ex) {
// In case of an unexpected exception you may want to abort
// the HTTP request in order to shut down the underlying
// connection and release it back to the connection manager.
logger.warn("Aborting the HTTP POST request.");
httpPost.abort();
throw ex;
} finally {
if (response != null && response.getEntity() != null) {
response.getEntity().consumeContent();
}
}
}
if (structure == null) throw new RuntimeException("Cannot connect to the remote host.");
return structure;
}