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## org.apache.jmeter.protocol.http.sampler
Class HTTPSampler

    java.lang.Object
      org.apache.jmeter.testelement.AbstractTestElement
          org.apache.jmeter.samplers.AbstractSampler
              org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
                  org.apache.jmeter.protocol.http.sampler.HTTPSampler

All Implemented Interfaces:
  Serializable, Cloneable, HTTPConstantsInterface, Interruptible, Sampler, TestElement, TestListener, ThreadListener

Direct Known Subclasses:
  AccessLogSampler

    public class HTTPSampler

extends HTTPSamplerBase
implements Interruptible

A sampler which understands all the parts necessary to read statistics about HTTP requests, including cookies and authentication.

See Also:
  Serialized Form

Field Summary

Fields inherited from class org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
`ARGUMENTS, AUTH_MANAGER, AUTO_REDIRECTS, CACHE_MANAGER, CLIENT, CONNECT_TIMEOUT, CONTENT_ENCODING, CONTENT_TYPE, COOKIE_MANAGER, DEFAULT_METHOD, DO_MULTIPART_POST, DOMAIN, EMBEDDED_URL_RE, FOLLOW_REDIRECTS, HEADER_MANAGER, IMAGE_PARSER, IMPLEMENTATION, MAX_FRAME_DEPTH, MAX_REDIRECTS, METHOD, MONITOR, NON_HTTP_RESPONSE_CODE, NON_HTTP_RESPONSE_MESSAGE, PATH, PORT, PROTOCOL, PROXYHOST, PROXYPASS, PROXYPORT, PROXYUSER, RESPONSE_TIMEOUT, UNSPECIFIED_PORT, UNSPECIFIED_PORT_AS_STRING, URL, URL_UNSPECIFIED_PORT, URL_UNSPECIFIED_PORT_AS_STRING, USE_KEEPALIVE`

Fields inherited from interface org.apache.jmeter.protocol.http.util.HTTPConstantsInterface
`APPLICATION_X_WWW_FORM_URLENCODED, CACHE_CONTROL, CONNECT, CONNECTION_CLOSE, DEFAULT_HTTP_PORT, DEFAULT_HTTP_PORT_STRING, DEFAULT_HTTPS_PORT, DEFAULT_HTTPS_PORT_STRING, DELETE, ENCODING_GZIP, ETAG, EXPIRES, GET, HEAD, HEADER_AUTHORIZATION, HEADER_CONNECTION, HEADER_CONTENT_DISPOSITION, HEADER_CONTENT_ENCODING, HEADER_CONTENT_LENGTH, HEADER_CONTENT_TYPE, HEADER_COOKIE, HEADER_LOCATION, HEADER_SET_COOKIE, HTTP_1_1, IF_MODIFIED_SINCE, IF_NONE_MATCH, KEEP_ALIVE, LAST_MODIFIED, MULTIPART_FORM_DATA, OPTIONS, POST, PROTOCOL_HTTP, PROTOCOL_HTTPS, PUT, TRACE, TRANSFER_ENCODING`

Fields inherited from interface org.apache.jmeter.testelement.TestElement
`COMMENTS, ENABLED, GUI_CLASS, NAME, TEST_CLASS`

Constructor Summary
`HTTPSampler()` Constructor for the HTTPSampler object.

Method Summary
`protected void` | `disconnect(HttpURLConnection conn)`
`protected String` | `getResponseHeaders(HttpURLConnection conn)` Gets the ResponseHeaders from the URLConnection
`boolean` | `interrupt()` Interrupt the current operation if possible.
`protected byte[]` | `readResponse(HttpURLConnection conn, SampleResult res)` Reads the response from the URL connection.
`protected HTTPSampleResult` | `sample(URL url, String method, boolean areFollowingRedirect, int frameDepth)` Samples the URL passed in and stores the result in `HTTPSampleResult`, following redirects and downloading page resources as appropriate.
`protected String` | `sendPostData(URLConnection connection)` Send POST data from `Entry` to the open connection.
`protected void` | `setPostHeaders(URLConnection conn)` Set request headers in preparation to opening a connection.
`protected HttpURLConnection` | `setupConnection(URL u, String method, HTTPSampleResult res)` Returns an `HttpURLConnection` fully ready to attempt connection.

Methods inherited from class org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase
`addArgument, addArgument, addEncodedArgument, addEncodedArgument, addEncodedArgument, addNonEncodedArgument, addTestElement, clone, downloadPageResources, encodeBackSlashes, encodeSpaces, errorResult, followRedirects, getArguments, getAuthManager, getAutoRedirects, getCacheManager, getClient, getConnectTimeout, getContentEncoding, getCookieManager, getDefaultPort, getDomain, getDoMultipartPost, getEmbeddedUrlRE, getFollowRedirects, getHeaderManager, getHTTPFileCount, getHTTPFiles, getImplementation, getMethod, getMonitor, getPath, getPort, getPortIfSpecified, getProtocol, getProxyHost, getProxyPass, getProxyPortInt, getProxyUser, getQueryString, getQueryString, getResponseTimeout, getSendFileAsPostBody, getSendParameterValuesAsPostBody, getUrl, getUseKeepAlive, getUseMultipartForPost, getValidMethodsAsArray, hasArguments, isImageParser, isMonitor, isProtocolDefaultPort, isSecure, isSecure, isSuccessCode, parseArguments, parseArguments, readResponse, resultProcessing, sample, sample, setArguments, setAuthManager, setAutoRedirects, setCacheManager, setClient, setConnectTimeout, setContentEncoding, setCookieManager, setDomain, setDoMultipartPost, setEmbeddedUrlRE, setFollowRedirects, setHeaderManager, setHTTPFiles, setImageParser, setImplementation, setMD5, setMethod, setMonitor, setMonitor, setPath, setPath, setPort, setProtocol, setResponseTimeout, setUseKeepAlive, testEnded, testEnded, testIterationStart, testStarted, testStarted, threadFinished, threadStarted, toString, useMD5`

Methods inherited from class org.apache.jmeter.testelement.AbstractTestElement
`addProperty, canRemove, clear, clearTemporary, emptyTemporary, equals, getComment, getName, getProperty, getPropertyAsBoolean, getPropertyAsBoolean, getPropertyAsDouble, getPropertyAsFloat, getPropertyAsInt, getPropertyAsInt, getPropertyAsLong, getPropertyAsLong, getPropertyAsString, getPropertyAsString, getThreadContext, getThreadName, hashCode, isEnabled, isRunningVersion, isTemporary, logProperties, mergeIn, propertyIterator, recoverRunningVersion, removeProperty, setComment, setName, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setRunningVersion, setTemporary, setThreadContext, setThreadName, traverse, traverseCollection, traverseMap, traverseProperty`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface org.apache.jmeter.testelement.TestElement
`canRemove, clear, getComment, getName, getProperty, getPropertyAsBoolean, getPropertyAsBoolean, getPropertyAsDouble, getPropertyAsFloat, getPropertyAsInt, getPropertyAsInt, getPropertyAsLong, getPropertyAsLong, getPropertyAsString, getPropertyAsString, getThreadContext, getThreadName, isEnabled, isRunningVersion, isTemporary, propertyIterator, recoverRunningVersion, removeProperty, setComment, setName, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setRunningVersion, setTemporary, setThreadContext, setThreadName, traverse`

Constructor Detail

### HTTPSampler

    public HTTPSampler()

  Constructor for the HTTPSampler object. Consider using HTTPSamplerFactory.newInstance() instead

Method Detail

### setPostHeaders

    protected void setPostHeaders(URLConnection conn)
                           throws IOException

  Set request headers in preparation to opening a connection.

  Parameters:
    `conn` - `URLConnection` to set headers on
  Throws:
    `IOException` - if an I/O exception occurs

### sendPostData

    protected String sendPostData(URLConnection connection)
                           throws IOException

  Send POST data from `Entry` to the open connection. This also handles sending data for PUT requests

  Parameters:
    `connection` - `URLConnection` where POST data should be sent
  Returns:
    a String show what was posted. Will not contain actual file upload content
  Throws:
    `IOException` - if an I/O exception occurs

### setupConnection

    protected HttpURLConnection setupConnection(URL u,
                                                String method,
                                                HTTPSampleResult res)
                                         throws IOException

  Returns an `HttpURLConnection` fully ready to attempt connection. This means it sets the request method (GET or POST), headers, cookies, and authorization for the URL request.

  The request infos are saved into the sample result if one is provided.

  Parameters:
    `u` - `URL` of the URL request
    `method` - GET, POST etc
    `res` - sample result to save request infos to
  Returns:
    `HttpURLConnection` ready for .connect
  Throws:
    `IOException` - if an I/O Exception occurs

### readResponse

    protected byte[] readResponse(HttpURLConnection conn,
                                  SampleResult res)
                           throws IOException

  Reads the response from the URL connection.

  Parameters:
    `conn` - URL from which to read response
  Returns:
    response content
  Throws:
    `IOException` - if an I/O exception occurs

### getResponseHeaders

    protected String getResponseHeaders(HttpURLConnection conn)

  Gets the ResponseHeaders from the URLConnection

  Parameters:
    `conn` - connection from which the headers are read
  Returns:
    string containing the headers, one per line

### sample

    protected HTTPSampleResult sample(URL url,
                                      String method,
                                      boolean areFollowingRedirect,
                                      int frameDepth)

  Samples the URL passed in and stores the result in `HTTPSampleResult`, following redirects and downloading page resources as appropriate.

  When getting a redirect target, redirects are not followed and resources are not downloaded. The caller will take care of this.

  Specified by:
    `sample` in class `HTTPSamplerBase`
  Parameters:
    `url` - URL to sample
    `method` - HTTP method: GET, POST,...
    `areFollowingRedirect` - whether we're getting a redirect target
    `frameDepth` - Depth of this target in the frame structure. Used only to prevent infinite recursion.
  Returns:
    results of the sampling

### disconnect

    protected void disconnect(HttpURLConnection conn)

### interrupt

    public boolean interrupt()

  Interrupt the current operation if possible.

  Specified by:
    `interrupt` in interface `Interruptible`
  Returns:
    `true` if there was an operation to interrupt.

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