/**
* Checks the response body as a substring or regular expression match according to the
* leading-tilde convention
*
* @param config ConnectionConfig object from which response-text property is extracted
* @param response Body of HTTP response to check
* @return Whether the response matches the response-text property
*/
protected boolean checkResponseBody(ConnectionConfig config, String response) {
String expectedResponse = config.getKeyedString(PROPERTY_NAME_RESPONSE_TEXT, null);
if (expectedResponse == null) {
return true;
}
if (expectedResponse.startsWith("~")) {
Pattern bodyPat = Pattern.compile(expectedResponse.substring(1), Pattern.DOTALL);
return bodyPat.matcher(response).matches();
} else {
return response.contains(expectedResponse);
}
}
/** {@inheritDoc} */
@Override
protected boolean checkProtocol(Socket socket, ConnectionConfig config) throws IOException {
boolean isAServer = false;
m_queryString =
"GET " + config.getKeyedString(PROPERTY_NAME_URL, DEFAULT_URL) + " HTTP/1.0\r\n\r\n";
LOG.debug("Query: {}", m_queryString);
try {
BufferedReader lineRdr = new BufferedReader(new InputStreamReader(socket.getInputStream()));
socket.getOutputStream().write(m_queryString.getBytes());
char[] cbuf = new char[1024];
int chars = 0;
StringBuffer response = new StringBuffer();
try {
while ((chars = lineRdr.read(cbuf, 0, 1024)) != -1) {
String line = new String(cbuf, 0, chars);
LOG.debug("Read: {} bytes: [{}] from socket.", line.length(), line);
response.append(line);
}
} catch (java.net.SocketTimeoutException timeoutEx) {
if (timeoutEx.bytesTransferred > 0) {
String line = new String(cbuf, 0, timeoutEx.bytesTransferred);
LOG.debug("Read: {} bytes: [{}] from socket @ timeout!", line.length(), line);
response.append(line);
}
}
if (response.toString() != null && response.toString().indexOf(m_responseString) > -1) {
if (m_checkReturnCode) {
int maxRetCode = config.getKeyedInteger(PROPERTY_NAME_MAX_RET_CODE, 399);
if ((DEFAULT_URL.equals(config.getKeyedString(PROPERTY_NAME_URL, DEFAULT_URL)))
|| (config.getKeyedBoolean(PROPERTY_NAME_RETURN_CODE, true) == false)) {
maxRetCode = 600;
}
StringTokenizer t = new StringTokenizer(response.toString());
t.nextToken();
int rVal = Integer.parseInt(t.nextToken());
LOG.debug("{} : Request returned code: {}", getPluginName(), rVal);
if (rVal >= 99 && rVal <= maxRetCode) isAServer = true;
} else {
isAServer = true;
}
if (isAServer) {
isAServer = checkResponseBody(config, response.toString());
}
}
} catch (SocketException e) {
LOG.debug(
"{}: a protocol error occurred talking to host {}",
getPluginName(),
InetAddressUtils.str(config.getInetAddress()),
e);
isAServer = false;
} catch (NumberFormatException e) {
LOG.debug(
"{}: failed to parse response code from host {}",
getPluginName(),
InetAddressUtils.str(config.getInetAddress()),
e);
isAServer = false;
}
return isAServer;
}