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## org.apache.commons.httpclient
Class HttpMethodBase

    java.lang.Object
      org.apache.commons.httpclient.HttpMethodBase

All Implemented Interfaces:
  HttpMethod

Direct Known Subclasses:
  ConnectMethod, DeleteMethod, ExpectContinueMethod, GetMethod, HeadMethod, OptionsMethod, TraceMethod

    public abstract class HttpMethodBase

extends Object
implements HttpMethod

An abstract base implementation of HttpMethod.

At minimum, subclasses will need to override:

- `getName()` to return the approriate name for this method

When a method requires additional request headers, subclasses will typically want to override:

- `addRequestHeaders(HttpState,HttpConnection)` to write those headers

When a method expects specific response headers, subclasses may want to override:

- `processResponseHeaders(HttpState,HttpConnection)` to handle those headers

Version:
  $Revision: 539441 $ $Date: 2007-05-18 14:56:55 +0200 (Fri, 18 May 2007) $
Author:
  Remy Maucherat, Rodney Waldhoff, Sean C. Sullivan, dIon Gillard, Jeff Dever, Davanum Srinivas, Ortwin Glueck, Eric Johnson, Michael Becke, Oleg Kalnichevski, Mike Bowler, Gary Gregory, Christian Kohlschuetter

Field Summary
`protected HttpVersion` | `effectiveVersion` HTTP protocol version used for execution of this method.
`protected StatusLine` | `statusLine` The Status-Line from the response.

Constructor Summary
`HttpMethodBase()` No-arg constructor.
`HttpMethodBase(String uri)` Constructor specifying a URI.

Method Summary
`void` | `abort()` Aborts the execution of this method.
`protected void` | `addCookieRequestHeader(HttpState state, HttpConnection conn)` Generates `Cookie` request headers for those `cookie`s that match the given host, port and path.
`protected void` | `addHostRequestHeader(HttpState state, HttpConnection conn)` Generates `Host` request header, as long as no `Host` request header already exists.
`protected void` | `addProxyConnectionHeader(HttpState state, HttpConnection conn)` Generates `Proxy-Connection: Keep-Alive` request header when communicating via a proxy server.
`void` | `addRequestHeader(Header header)` Adds the specified request header, NOT overwriting any previous value.
`void` | `addRequestHeader(String headerName, String headerValue)` Adds the specified request header, NOT overwriting any previous value.
`protected void` | `addRequestHeaders(HttpState state, HttpConnection conn)` Generates all the required request `header`s to be submitted via the given `connection`.
`void` | `addResponseFooter(Header footer)` Use this method internally to add footers.
`protected void` | `addUserAgentRequestHeader(HttpState state, HttpConnection conn)` Generates default `User-Agent` request header, as long as no `User-Agent` request header already exists.
`protected void` | `checkNotUsed()` Throws an `IllegalStateException` if the HTTP method has been already `executed`, but not `recycled`.
`protected void` | `checkUsed()` Throws an `IllegalStateException` if the HTTP method has not been `executed` since last `recycle`.
`int` | `execute(HttpState state, HttpConnection conn)` Executes this method using the specified `HttpConnection` and `HttpState`.
`protected static String` | `generateRequestLine(HttpConnection connection, String name, String requestPath, String query, String version)` Generates HTTP request line according to the specified attributes.
`String` | `getAuthenticationRealm()` Deprecated. use #getHostAuthState()
`protected String` | `getContentCharSet(Header contentheader)` Returns the character set from the `Content-Type` header.
`boolean` | `getDoAuthentication()` Returns `true` if the HTTP method should automatically handle HTTP authentication challenges (status code 401, etc.), `false` otherwise
`HttpVersion` | `getEffectiveVersion()` Returns the HTTP version used with this method (may be `null` if undefined, that is, the method has not been executed)
`boolean` | `getFollowRedirects()` Returns `true` if the HTTP method should automatically follow HTTP redirects (status code 302, etc.), `false` otherwise.
`AuthState` | `getHostAuthState()` Returns the target host `authentication state`
`HostConfiguration` | `getHostConfiguration()` Deprecated. no longer applicable
`MethodRetryHandler` | `getMethodRetryHandler()` Deprecated. use `HttpMethodParams`
`abstract String` | `getName()` Obtains the name of the HTTP method as used in the HTTP request line, for example `"GET"` or `"POST"`.
`HttpMethodParams` | `getParams()` Returns `HTTP protocol parameters` associated with this method.
`String` | `getPath()` Gets the path of this HTTP method.
`String` | `getProxyAuthenticationRealm()` Deprecated. use #getProxyAuthState()
`AuthState` | `getProxyAuthState()` Returns the proxy `authentication state`
`String` | `getQueryString()` Gets the query string of this HTTP method.
`int` | `getRecoverableExceptionCount()` Deprecated. no longer used Returns the number of "recoverable" exceptions thrown and handled, to allow for monitoring the quality of the connection.
`String` | `getRequestCharSet()` Returns the character encoding of the request from the `Content-Type` header.
`Header` | `getRequestHeader(String headerName)` Returns the specified request header.
`protected HeaderGroup` | `getRequestHeaderGroup()` Gets the `header group` storing the request headers.
`Header[]` | `getRequestHeaders()` Returns an array of the requests headers that the HTTP method currently has
`Header[]` | `getRequestHeaders(String headerName)` Returns the request headers with the given name.
`byte[]` | `getResponseBody()` Returns the response body of the HTTP method, if any, as an array of bytes.
`byte[]` | `getResponseBody(int maxlen)` Returns the response body of the HTTP method, if any, as an array of bytes.
`InputStream` | `getResponseBodyAsStream()` Returns the response body of the HTTP method, if any, as an `InputStream`.
`String` | `getResponseBodyAsString()` Returns the response body of the HTTP method, if any, as a `String`.
`String` | `getResponseBodyAsString(int maxlen)` Returns the response body of the HTTP method, if any, as a `String`.
`String` | `getResponseCharSet()` Returns the character encoding of the response from the `Content-Type` header.
`long` | `getResponseContentLength()` Return the length (in bytes) of the response body, as specified in a `Content-Length` header.
`Header` | `getResponseFooter(String footerName)` Gets the response footer associated with the given name.
`Header[]` | `getResponseFooters()` Returns an array of the response footers that the HTTP method currently has in the order in which they were read.
`Header` | `getResponseHeader(String headerName)` Gets the response header associated with the given name.
`protected HeaderGroup` | `getResponseHeaderGroup()` Gets the `header group` storing the response headers.
`Header[]` | `getResponseHeaders()` Returns an array of the response headers that the HTTP method currently has in the order in which they were read.
`Header[]` | `getResponseHeaders(String headerName)` Returns the response headers with the given name.
`protected InputStream` | `getResponseStream()` Returns a stream from which the body of the current response may be read.
`protected HeaderGroup` | `getResponseTrailerHeaderGroup()` Gets the `header group` storing the response trailer headers as per RFC 2616 section 3.6.1.
`int` | `getStatusCode()` Returns the response status code.
`StatusLine` | `getStatusLine()` Provides access to the response status line.
`String` | `getStatusText()` Returns the status text (or "reason phrase") associated with the latest response.
`URI` | `getURI()` Returns the URI of the HTTP method
`boolean` | `hasBeenUsed()` Returns `true` if the HTTP method has been already `executed`, but not `recycled`.
`boolean` | `isAborted()` Tests whether the execution of this method has been aborted
`protected boolean` | `isConnectionCloseForced()` Tests if the connection should be force-closed when no longer needed.
`boolean` | `isHttp11()` Deprecated. Use `HttpMethodParams.getVersion()`
`boolean` | `isRequestSent()` Returns `true` if the HTTP has been transmitted to the target server in its entirety, `false` otherwise.
`boolean` | `isStrictMode()` Deprecated. Use `HttpParams.setParameter(String, Object)` to exercise a more granular control over HTTP protocol strictness.
`protected void` | `processCookieHeaders(CookieSpec parser, Header[] headers, HttpState state, HttpConnection conn)` This method processes the specified cookie headers.
`protected void` | `processResponseBody(HttpState state, HttpConnection conn)` This method is invoked immediately after `readResponseBody(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom body processing.
`protected void` | `processResponseHeaders(HttpState state, HttpConnection conn)` This method is invoked immediately after `readResponseHeaders(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom response headers processing.
`protected void` | `processStatusLine(HttpState state, HttpConnection conn)` This method is invoked immediately after `readStatusLine(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom response status line processing.
`protected void` | `readResponse(HttpState state, HttpConnection conn)` Reads the response from the given `connection`.
`protected void` | `readResponseBody(HttpState state, HttpConnection conn)` Read the response body from the given `HttpConnection`.
`protected void` | `readResponseHeaders(HttpState state, HttpConnection conn)` Reads the response headers from the given `connection`.
`protected void` | `readStatusLine(HttpState state, HttpConnection conn)` Read the status line from the given `HttpConnection`, setting my `status code` and `status text`.
`void` | `recycle()` Deprecated. no longer supported and will be removed in the future version of HttpClient
`void` | `releaseConnection()` Releases the connection being used by this HTTP method.
`void` | `removeRequestHeader(Header header)` Removes the given request header.
`void` | `removeRequestHeader(String headerName)` Remove the request header associated with the given name.
`protected void` | `responseBodyConsumed()` A response has been consumed.
`protected void` | `setConnectionCloseForced(boolean b)` Sets whether or not the connection should be force-closed when no longer needed.
`void` | `setDoAuthentication(boolean doAuthentication)` Sets whether or not the HTTP method should automatically handle HTTP authentication challenges (status code 401, etc.)
`void` | `setFollowRedirects(boolean followRedirects)` Sets whether or not the HTTP method should automatically follow HTTP redirects (status code 302, etc.)
`void` | `setHostConfiguration(HostConfiguration hostconfig)` Deprecated. no longer applicable
`void` | `setHttp11(boolean http11)` Deprecated. Use `HttpMethodParams.setVersion(HttpVersion)`
`void` | `setMethodRetryHandler(MethodRetryHandler handler)` Deprecated. use `HttpMethodParams`
`void` | `setParams(HttpMethodParams params)` Assigns `HTTP protocol parameters` for this method.
`void` | `setPath(String path)` Sets the path of the HTTP method.
`void` | `setQueryString(NameValuePair[] params)` Sets the query string of this HTTP method.
`void` | `setQueryString(String queryString)` Sets the query string of this HTTP method.
`void` | `setRequestHeader(Header header)` Sets the specified request header, overwriting any previous value.
`void` | `setRequestHeader(String headerName, String headerValue)` Set the specified request header, overwriting any previous value.
`protected void` | `setResponseStream(InputStream responseStream)` Sets the response stream.
`void` | `setStrictMode(boolean strictMode)` Deprecated. Use `HttpParams.setParameter(String, Object)` to exercise a more granular control over HTTP protocol strictness.
`void` | `setURI(URI uri)` Sets the URI for this method.
`protected boolean` | `shouldCloseConnection(HttpConnection conn)` Tests if the connection should be closed after the method has been executed.
`boolean` | `validate()` Returns `true` the method is ready to execute, `false` otherwise.
`protected void` | `writeRequest(HttpState state, HttpConnection conn)` Sends the request via the given `connection`.
`protected boolean` | `writeRequestBody(HttpState state, HttpConnection conn)` Writes the request body to the given `connection`.
`protected void` | `writeRequestHeaders(HttpState state, HttpConnection conn)` Writes the request headers to the given `connection`.
`protected void` | `writeRequestLine(HttpState state, HttpConnection conn)` Writes the request line to the given `connection`.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### statusLine

    protected StatusLine statusLine

  The Status-Line from the response.

### effectiveVersion

    protected HttpVersion effectiveVersion

  HTTP protocol version used for execution of this method.

Constructor Detail

### HttpMethodBase

    public HttpMethodBase()

  No-arg constructor.

### HttpMethodBase

    public HttpMethodBase(String uri)
                   throws IllegalArgumentException,
                          IllegalStateException

  Constructor specifying a URI. It is responsibility of the caller to ensure that URI elements (path & query parameters) are properly encoded (URL safe).

  Parameters:
    `uri` - either an absolute or relative URI. The URI is expected to be URL-encoded
  Throws:
    `IllegalArgumentException` - when URI is invalid
    `IllegalStateException` - when protocol of the absolute URI is not recognised

Method Detail

### getName

    public abstract String getName()

  Obtains the name of the HTTP method as used in the HTTP request line, for example `"GET"` or `"POST"`.

  Specified by:
    `getName` in interface `HttpMethod`
  Returns:
    the name of this method

### getURI

    public URI getURI()
               throws URIException

  Returns the URI of the HTTP method

  Specified by:
    `getURI` in interface `HttpMethod`
  Returns:
    The URI
  Throws:
    `URIException` - If the URI cannot be created.
  See Also:
    `HttpMethod.getURI()`

### setURI

    public void setURI(URI uri)
                throws URIException

  Sets the URI for this method.

  Specified by:
    `setURI` in interface `HttpMethod`
  Parameters:
    `uri` - URI to be set
  Throws:
    `URIException` - if a URI cannot be set
  Since:
    3.0

### setFollowRedirects

    public void setFollowRedirects(boolean followRedirects)

  Sets whether or not the HTTP method should automatically follow HTTP redirects (status code 302, etc.)

  Specified by:
    `setFollowRedirects` in interface `HttpMethod`
  Parameters:
    `followRedirects` - `true` if the method will automatically follow redirects, `false` otherwise.

### getFollowRedirects

    public boolean getFollowRedirects()

  Returns `true` if the HTTP method should automatically follow HTTP redirects (status code 302, etc.), `false` otherwise.

  Specified by:
    `getFollowRedirects` in interface `HttpMethod`
  Returns:
    `true` if the method will automatically follow HTTP redirects, `false` otherwise.

### setHttp11

    public void setHttp11(boolean http11)

  Deprecated. Use `HttpMethodParams.setVersion(HttpVersion)`

  Sets whether version 1.1 of the HTTP protocol should be used per default.

  Parameters:
    `http11` - `true` to use HTTP/1.1, `false` to use 1.0

### getDoAuthentication

    public boolean getDoAuthentication()

  Returns `true` if the HTTP method should automatically handle HTTP authentication challenges (status code 401, etc.), `false` otherwise

  Specified by:
    `getDoAuthentication` in interface `HttpMethod`
  Returns:
    `true` if authentication challenges will be processed automatically, `false` otherwise.
  Since:
    2.0
  See Also:
    `HttpMethod.setDoAuthentication(boolean)`

### setDoAuthentication

    public void setDoAuthentication(boolean doAuthentication)

  Sets whether or not the HTTP method should automatically handle HTTP authentication challenges (status code 401, etc.)

  Specified by:
    `setDoAuthentication` in interface `HttpMethod`
  Parameters:
    `doAuthentication` - `true` to process authentication challenges authomatically, `false` otherwise.
  Since:
    2.0
  See Also:
    `HttpMethod.getDoAuthentication()`

### isHttp11

    public boolean isHttp11()

  Deprecated. Use `HttpMethodParams.getVersion()`

  Returns `true` if version 1.1 of the HTTP protocol should be used per default, `false` if version 1.0 should be used.

  Returns:
    `true` to use HTTP/1.1, `false` to use 1.0

### setPath

    public void setPath(String path)

  Sets the path of the HTTP method. It is responsibility of the caller to ensure that the path is properly encoded (URL safe).

  Specified by:
    `setPath` in interface `HttpMethod`
  Parameters:
    `path` - the path of the HTTP method. The path is expected to be URL-encoded

### addRequestHeader

    public void addRequestHeader(Header header)

  Adds the specified request header, NOT overwriting any previous value. Note that header-name matching is case insensitive.

  Specified by:
    `addRequestHeader` in interface `HttpMethod`
  Parameters:
    `header` - the header to add to the request
  See Also:
    `HttpMethod.addRequestHeader(String,String)`, `HttpMethod.getRequestHeader(String)`, `HttpMethod.removeRequestHeader(String)`

### addResponseFooter

    public void addResponseFooter(Header footer)

  Use this method internally to add footers.

  Specified by:
    `addResponseFooter` in interface `HttpMethod`
  Parameters:
    `footer` - The footer to add.

### getPath

    public String getPath()

  Gets the path of this HTTP method. Calling this method after the request has been executed will return the actual path, following any redirects automatically handled by this HTTP method.

  Specified by:
    `getPath` in interface `HttpMethod`
  Returns:
    the path to request or "/" if the path is blank.

### setQueryString

    public void setQueryString(String queryString)

  Sets the query string of this HTTP method. The caller must ensure that the string is properly URL encoded. The query string should not start with the question mark character.

  Specified by:
    `setQueryString` in interface `HttpMethod`
  Parameters:
    `queryString` - the query string
  See Also:
    `EncodingUtil.formUrlEncode(NameValuePair[], String)`

### setQueryString

    public void setQueryString(NameValuePair[] params)

  Sets the query string of this HTTP method. The pairs are encoded as UTF-8 characters. To use a different charset the parameters can be encoded manually using EncodingUtil and set as a single String.

  Specified by:
    `setQueryString` in interface `HttpMethod`
  Parameters:
    `params` - an array of `NameValuePair`s to add as query string parameters. The name/value pairs will be automcatically URL encoded
  See Also:
    `EncodingUtil.formUrlEncode(NameValuePair[], String)`, `setQueryString(String)`

### getQueryString

    public String getQueryString()

  Gets the query string of this HTTP method.

  Specified by:
    `getQueryString` in interface `HttpMethod`
  Returns:
    The query string
  See Also:
    `HttpMethod.setQueryString(NameValuePair[])`, `HttpMethod.setQueryString(String)`

### setRequestHeader

    public void setRequestHeader(String headerName,
                                 String headerValue)

  Set the specified request header, overwriting any previous value. Note that header-name matching is case-insensitive.

  Specified by:
    `setRequestHeader` in interface `HttpMethod`
  Parameters:
    `headerName` - the header's name
    `headerValue` - the header's value
  See Also:
    `HttpMethod.setRequestHeader(Header)`, `HttpMethod.getRequestHeader(String)`, `HttpMethod.removeRequestHeader(String)`

### setRequestHeader

    public void setRequestHeader(Header header)

  Sets the specified request header, overwriting any previous value. Note that header-name matching is case insensitive.

  Specified by:
    `setRequestHeader` in interface `HttpMethod`
  Parameters:
    `header` - the header
  See Also:
    `HttpMethod.setRequestHeader(String,String)`, `HttpMethod.getRequestHeader(String)`, `HttpMethod.removeRequestHeader(String)`

### getRequestHeader

    public Header getRequestHeader(String headerName)

  Returns the specified request header. Note that header-name matching is case insensitive. `null` will be returned if either headerName is `null` or there is no matching header for headerName.

  Specified by:
    `getRequestHeader` in interface `HttpMethod`
  Parameters:
    `headerName` - The name of the header to be returned.
  Returns:
    The specified request header.
  Since:
    3.0

### getRequestHeaders

    public Header[] getRequestHeaders()

  Returns an array of the requests headers that the HTTP method currently has

  Specified by:
    `getRequestHeaders` in interface `HttpMethod`
  Returns:
    an array of my request headers.
  See Also:
    `HttpMethod.addRequestHeader(Header)`, `HttpMethod.addRequestHeader(String,String)`

### getRequestHeaders

    public Header[] getRequestHeaders(String headerName)

  Description copied from interface: `HttpMethod`
  Returns the request headers with the given name. Note that header-name matching is case insensitive.

  Specified by:
    `getRequestHeaders` in interface `HttpMethod`
  Parameters:
    `headerName` - the name of the headers to be returned.
  Returns:
    an array of zero or more headers
  See Also:
    `HttpMethod.getRequestHeaders(java.lang.String)`

### getRequestHeaderGroup

    protected HeaderGroup getRequestHeaderGroup()

  Gets the `header group` storing the request headers.

  Returns:
    a HeaderGroup
  Since:
    2.0beta1

### getResponseTrailerHeaderGroup

    protected HeaderGroup getResponseTrailerHeaderGroup()

  Gets the `header group` storing the response trailer headers as per RFC 2616 section 3.6.1.

  Returns:
    a HeaderGroup
  Since:
    2.0beta1

### getResponseHeaderGroup

    protected HeaderGroup getResponseHeaderGroup()

  Gets the `header group` storing the response headers.

  Returns:
    a HeaderGroup
  Since:
    2.0beta1

### getResponseHeaders

    public Header[] getResponseHeaders(String headerName)

  Description copied from interface: `HttpMethod`
  Returns the response headers with the given name. Note that header-name matching is case insensitive.

  Specified by:
    `getResponseHeaders` in interface `HttpMethod`
  Parameters:
    `headerName` - the name of the headers to be returned.
  Returns:
    an array of zero or more headers
  Since:
    3.0
  See Also:
    `HttpMethod.getResponseHeaders(java.lang.String)`

### getStatusCode

    public int getStatusCode()

  Returns the response status code.

  Specified by:
    `getStatusCode` in interface `HttpMethod`
  Returns:
    the status code associated with the latest response.

### getStatusLine

    public StatusLine getStatusLine()

  Provides access to the response status line.

  Specified by:
    `getStatusLine` in interface `HttpMethod`
  Returns:
    the status line object from the latest response.
  Since:
    2.0

### getResponseHeaders

    public Header[] getResponseHeaders()

  Returns an array of the response headers that the HTTP method currently has in the order in which they were read.

  Specified by:
    `getResponseHeaders` in interface `HttpMethod`
  Returns:
    an array of response headers.

### getResponseHeader

    public Header getResponseHeader(String headerName)

  Gets the response header associated with the given name. Header name matching is case insensitive. `null` will be returned if either headerName is `null` or there is no matching header for headerName.

  Specified by:
    `getResponseHeader` in interface `HttpMethod`
  Parameters:
    `headerName` - the header name to match
  Returns:
    the matching header

### getResponseContentLength

    public long getResponseContentLength()

  Return the length (in bytes) of the response body, as specified in a `Content-Length` header.

  Return `-1` when the content-length is unknown.

  Returns:
    content length, if `Content-Length` header is available. `0` indicates that the request has no body. If `Content-Length` header is not present, the method returns `-1`.

### getResponseBody

    public byte[] getResponseBody()
                           throws IOException

  Returns the response body of the HTTP method, if any, as an array of bytes. If response body is not available or cannot be read, returns `null`. Buffers the response and this method can be called several times yielding the same result each time. Note: This will cause the entire response body to be buffered in memory. A malicious server may easily exhaust all the VM memory. It is strongly recommended, to use getResponseAsStream if the content length of the response is unknown or resonably large.

  Specified by:
    `getResponseBody` in interface `HttpMethod`
  Returns:
    The response body.
  Throws:
    `IOException` - If an I/O (transport) problem occurs while obtaining the response body.

### getResponseBody

    public byte[] getResponseBody(int maxlen)
                           throws IOException

  Returns the response body of the HTTP method, if any, as an array of bytes. If response body is not available or cannot be read, returns `null`. Buffers the response and this method can be called several times yielding the same result each time. Note: This will cause the entire response body to be buffered in memory. This method is safe if the content length of the response is unknown, because the amount of memory used is limited.

  If the response is large this method involves lots of array copying and many object allocations, which makes it unsuitable for high-performance / low-footprint applications. Those applications should use `getResponseBodyAsStream()`.

  Parameters:
    `maxlen` - the maximum content length to accept (number of bytes).
  Returns:
    The response body.
  Throws:
    `IOException` - If an I/O (transport) problem occurs while obtaining the response body.

### getResponseBodyAsStream

    public InputStream getResponseBodyAsStream()
                                        throws IOException

  Returns the response body of the HTTP method, if any, as an `InputStream`. If response body is not available, returns `null`. If the response has been buffered this method returns a new stream object on every call. If the response has not been buffered the returned stream can only be read once.

  Specified by:
    `getResponseBodyAsStream` in interface `HttpMethod`
  Returns:
    The response body or `null`.
  Throws:
    `IOException` - If an I/O (transport) problem occurs while obtaining the response body.

### getResponseBodyAsString

    public String getResponseBodyAsString()
                                   throws IOException

  Returns the response body of the HTTP method, if any, as a `String`. If response body is not available or cannot be read, returns `null` The string conversion on the data is done using the character encoding specified in `Content-Type` header. Buffers the response and this method can be called several times yielding the same result each time. Note: This will cause the entire response body to be buffered in memory. A malicious server may easily exhaust all the VM memory. It is strongly recommended, to use getResponseAsStream if the content length of the response is unknown or resonably large.

  Specified by:
    `getResponseBodyAsString` in interface `HttpMethod`
  Returns:
    The response body or `null`.
  Throws:
    `IOException` - If an I/O (transport) problem occurs while obtaining the response body.

### getResponseBodyAsString

    public String getResponseBodyAsString(int maxlen)
                                   throws IOException

  Returns the response body of the HTTP method, if any, as a `String`. If response body is not available or cannot be read, returns `null` The string conversion on the data is done using the character encoding specified in `Content-Type` header. Buffers the response and this method can be called several times yielding the same result each time. Note: This will cause the entire response body to be buffered in memory. This method is safe if the content length of the response is unknown, because the amount of memory used is limited.

  If the response is large this method involves lots of array copying and many object allocations, which makes it unsuitable for high-performance / low-footprint applications. Those applications should use `getResponseBodyAsStream()`.

  Parameters:
    `maxlen` - the maximum content length to accept (number of bytes). Note that, depending on the encoding, this is not equal to the number of characters.
  Returns:
    The response body or `null`.
  Throws:
    `IOException` - If an I/O (transport) problem occurs while obtaining the response body.

### getResponseFooters

    public Header[] getResponseFooters()

  Returns an array of the response footers that the HTTP method currently has in the order in which they were read.

  Specified by:
    `getResponseFooters` in interface `HttpMethod`
  Returns:
    an array of footers

### getResponseFooter

    public Header getResponseFooter(String footerName)

  Gets the response footer associated with the given name. Footer name matching is case insensitive. `null` will be returned if either footerName is `null` or there is no matching footer for footerName or there are no footers available. If there are multiple footers with the same name, there values will be combined with the ',' separator as specified by RFC2616.

  Specified by:
    `getResponseFooter` in interface `HttpMethod`
  Parameters:
    `footerName` - the footer name to match
  Returns:
    the matching footer

### setResponseStream

    protected void setResponseStream(InputStream responseStream)

  Sets the response stream.

  Parameters:
    `responseStream` - The new response stream.

### getResponseStream

    protected InputStream getResponseStream()

  Returns a stream from which the body of the current response may be read. If the method has not yet been executed, if `responseBodyConsumed` has been called, or if the stream returned by a previous call has been closed, `null` will be returned.

  Returns:
    the current response stream

### getStatusText

    public String getStatusText()

  Returns the status text (or "reason phrase") associated with the latest response.

  Specified by:
    `getStatusText` in interface `HttpMethod`
  Returns:
    The status text.

### setStrictMode

    public void setStrictMode(boolean strictMode)

  Deprecated. Use `HttpParams.setParameter(String, Object)` to exercise a more granular control over HTTP protocol strictness.

  Defines how strictly HttpClient follows the HTTP protocol specification (RFC 2616 and other relevant RFCs). In the strict mode HttpClient precisely implements the requirements of the specification, whereas in non-strict mode it attempts to mimic the exact behaviour of commonly used HTTP agents, which many HTTP servers expect.

  Specified by:
    `setStrictMode` in interface `HttpMethod`
  Parameters:
    `strictMode` - `true` for strict mode, `false` otherwise
  See Also:
    `HttpMethod.isStrictMode()`

### isStrictMode

    public boolean isStrictMode()

  Deprecated. Use `HttpParams.setParameter(String, Object)` to exercise a more granular control over HTTP protocol strictness.

  Description copied from interface: `HttpMethod`
  Returns the value of the strict mode flag.

  Specified by:
    `isStrictMode` in interface `HttpMethod`
  Returns:
    `false`
  See Also:
    `HttpMethod.setStrictMode(boolean)`

### addRequestHeader

    public void addRequestHeader(String headerName,
                                 String headerValue)

  Adds the specified request header, NOT overwriting any previous value. Note that header-name matching is case insensitive.

  Specified by:
    `addRequestHeader` in interface `HttpMethod`
  Parameters:
    `headerName` - the header's name
    `headerValue` - the header's value
  See Also:
    `HttpMethod.addRequestHeader(Header)`, `HttpMethod.getRequestHeader(String)`, `HttpMethod.removeRequestHeader(String)`

### isConnectionCloseForced

    protected boolean isConnectionCloseForced()

  Tests if the connection should be force-closed when no longer needed.

  Returns:
    `true` if the connection must be closed

### setConnectionCloseForced

    protected void setConnectionCloseForced(boolean b)

  Sets whether or not the connection should be force-closed when no longer needed. This value should only be set to `true` in abnormal circumstances, such as HTTP protocol violations.

  Parameters:
    `b` - `true` if the connection must be closed, `false` otherwise.

### shouldCloseConnection

    protected boolean shouldCloseConnection(HttpConnection conn)

  Tests if the connection should be closed after the method has been executed. The connection will be left open when using HTTP/1.1 or if `Connection: keep-alive` header was sent.

  Parameters:
    `conn` - the connection in question
  Returns:
    boolean true if we should close the connection.

### execute

    public int execute(HttpState state,
                       HttpConnection conn)
                throws HttpException,
                       IOException

  Executes this method using the specified `HttpConnection` and `HttpState`.

  Specified by:
    `execute` in interface `HttpMethod`
  Parameters:
    `state` - `state` information to associate with this request. Must be non-null.
    `conn` - the `connection` to used to execute this HTTP method. Must be non-null.
  Returns:
    the integer status code if one was obtained, or `-1`
  Throws:
    `IOException` - if an I/O (transport) error occurs
    `HttpException` - if a protocol exception occurs.

### abort

    public void abort()

  Aborts the execution of this method.

  Specified by:
    `abort` in interface `HttpMethod`
  Since:
    3.0
  See Also:
    `HttpMethod.execute(HttpState, HttpConnection)`

### hasBeenUsed

    public boolean hasBeenUsed()

  Returns `true` if the HTTP method has been already `executed`, but not `recycled`.

  Specified by:
    `hasBeenUsed` in interface `HttpMethod`
  Returns:
    `true` if the method has been executed, `false` otherwise

### recycle

    public void recycle()

  Deprecated. no longer supported and will be removed in the future version of HttpClient

  Recycles the HTTP method so that it can be used again. Note that all of the instance variables will be reset once this method has been called. This method will also release the connection being used by this HTTP method.

  Specified by:
    `recycle` in interface `HttpMethod`
  See Also:
    `releaseConnection()`

### releaseConnection

    public void releaseConnection()

  Releases the connection being used by this HTTP method. In particular the connection is used to read the response(if there is one) and will be held until the response has been read. If the connection can be reused by other HTTP methods it is NOT closed at this point.

  Specified by:
    `releaseConnection` in interface `HttpMethod`
  Since:
    2.0

### removeRequestHeader

    public void removeRequestHeader(String headerName)

  Remove the request header associated with the given name. Note that header-name matching is case insensitive.

  Specified by:
    `removeRequestHeader` in interface `HttpMethod`
  Parameters:
    `headerName` - the header name

### removeRequestHeader

    public void removeRequestHeader(Header header)

  Removes the given request header.

  Specified by:
    `removeRequestHeader` in interface `HttpMethod`
  Parameters:
    `header` - the header

### validate

    public boolean validate()

  Returns `true` the method is ready to execute, `false` otherwise.

  Specified by:
    `validate` in interface `HttpMethod`
  Returns:
    This implementation always returns `true`.

### addCookieRequestHeader

    protected void addCookieRequestHeader(HttpState state,
                                          HttpConnection conn)
                                   throws IOException,
                                          HttpException

  Generates `Cookie` request headers for those `cookie`s that match the given host, port and path.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### addHostRequestHeader

    protected void addHostRequestHeader(HttpState state,
                                        HttpConnection conn)
                                 throws IOException,
                                        HttpException

  Generates `Host` request header, as long as no `Host` request header already exists.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### addProxyConnectionHeader

    protected void addProxyConnectionHeader(HttpState state,
                                            HttpConnection conn)
                                     throws IOException,
                                            HttpException

  Generates `Proxy-Connection: Keep-Alive` request header when communicating via a proxy server.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### addRequestHeaders

    protected void addRequestHeaders(HttpState state,
                                     HttpConnection conn)
                              throws IOException,
                                     HttpException

  Generates all the required request `header`s to be submitted via the given `connection`.

  This implementation adds `User-Agent`, `Host`, `Cookie`, `Authorization`, `Proxy-Authorization` and `Proxy-Connection` headers, when appropriate.

  Subclasses may want to override this method to to add additional headers, and may choose to invoke this implementation (via `super`) to add the "standard" headers.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `writeRequestHeaders(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### addUserAgentRequestHeader

    protected void addUserAgentRequestHeader(HttpState state,
                                             HttpConnection conn)
                                      throws IOException,
                                             HttpException

  Generates default `User-Agent` request header, as long as no `User-Agent` request header already exists.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### checkNotUsed

    protected void checkNotUsed()
                         throws IllegalStateException

  Throws an `IllegalStateException` if the HTTP method has been already `executed`, but not `recycled`.

  Throws:
    `IllegalStateException` - if the method has been used and not recycled

### checkUsed

    protected void checkUsed()
                      throws IllegalStateException

  Throws an `IllegalStateException` if the HTTP method has not been `executed` since last `recycle`.

  Throws:
    `IllegalStateException` - if not used

### generateRequestLine

    protected static String generateRequestLine(HttpConnection connection,
                                                String name,
                                                String requestPath,
                                                String query,
                                                String version)

  Generates HTTP request line according to the specified attributes.

  Parameters:
    `connection` - the `connection` used to execute this HTTP method
    `name` - the method name generate a request for
    `requestPath` - the path string for the request
    `query` - the query string for the request
    `version` - the protocol version to use (e.g. HTTP/1.0)
  Returns:
    HTTP request line

### processResponseBody

    protected void processResponseBody(HttpState state,
                                       HttpConnection conn)

  This method is invoked immediately after `readResponseBody(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom body processing.

  This implementation does nothing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  See Also:
    `readResponse(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `readResponseBody(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### processResponseHeaders

    protected void processResponseHeaders(HttpState state,
                                          HttpConnection conn)

  This method is invoked immediately after `readResponseHeaders(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom response headers processing.

  This implementation will handle the `Set-Cookie` and `Set-Cookie2` headers, if any, adding the relevant cookies to the given `HttpState`.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  See Also:
    `readResponse(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `readResponseHeaders(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### processCookieHeaders

    protected void processCookieHeaders(CookieSpec parser,
                                        Header[] headers,
                                        HttpState state,
                                        HttpConnection conn)

  This method processes the specified cookie headers. It is invoked from within `processResponseHeaders(HttpState,HttpConnection)`

  Parameters:
    `headers` - cookie `Header`s to be processed
    `state` - the `state` information associated with this HTTP method
    `conn` - the `connection` used to execute this HTTP method

### processStatusLine

    protected void processStatusLine(HttpState state,
                                     HttpConnection conn)

  This method is invoked immediately after `readStatusLine(HttpState,HttpConnection)` and can be overridden by sub-classes in order to provide custom response status line processing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  See Also:
    `readResponse(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `readStatusLine(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### readResponse

    protected void readResponse(HttpState state,
                                HttpConnection conn)
                         throws IOException,
                                HttpException

  Reads the response from the given `connection`.

  The response is processed as the following sequence of actions:

  1. `readStatusLine(HttpState,HttpConnection)` is invoked to read the request line.
  2. `processStatusLine(HttpState,HttpConnection)` is invoked, allowing the method to process the status line if desired.
  3. `readResponseHeaders(HttpState,HttpConnection)` is invoked to read the associated headers.
  4. `processResponseHeaders(HttpState,HttpConnection)` is invoked, allowing the method to process the headers if desired.
  5. `readResponseBody(HttpState,HttpConnection)` is invoked to read the associated body (if any).
  6. `processResponseBody(HttpState,HttpConnection)` is invoked, allowing the method to process the response body if desired.
  Subclasses may want to override one or more of the above methods to to customize the processing. (Or they may choose to override this method if dramatically different processing is required.)

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### readResponseBody

    protected void readResponseBody(HttpState state,
                                    HttpConnection conn)
                             throws IOException,
                                    HttpException

  Read the response body from the given `HttpConnection`.

  The current implementation wraps the socket level stream with an appropriate stream for the type of response (chunked, content-length, or auto-close). If there is no response body, the connection associated with the request will be returned to the connection manager.

  Subclasses may want to override this method to to customize the processing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `readResponse(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `processResponseBody(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### readResponseHeaders

    protected void readResponseHeaders(HttpState state,
                                       HttpConnection conn)
                                throws IOException,
                                       HttpException

  Reads the response headers from the given `connection`.

  Subclasses may want to override this method to to customize the processing.

  "It must be possible to combine the multiple header fields into one "field-name: field-value" pair, without changing the semantics of the message, by appending each subsequent field-value to the first, each separated by a comma." - HTTP/1.0 (4.3)

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `readResponse(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `processResponseHeaders(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`

### readStatusLine

    protected void readStatusLine(HttpState state,
                                  HttpConnection conn)
                           throws IOException,
                                  HttpException

  Read the status line from the given `HttpConnection`, setting my `status code` and `status text`.

  Subclasses may want to override this method to to customize the processing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `StatusLine`

### writeRequest

    protected void writeRequest(HttpState state,
                                HttpConnection conn)
                         throws IOException,
                                HttpException

  Sends the request via the given `connection`.

  The request is written as the following sequence of actions:

  1. `writeRequestLine(HttpState, HttpConnection)` is invoked to write the request line.
  2. `writeRequestHeaders(HttpState, HttpConnection)` is invoked to write the associated headers.
  3. `\r\n` is sent to close the head part of the request.
  4. `writeRequestBody(HttpState, HttpConnection)` is invoked to write the body part of the request.

  Subclasses may want to override one or more of the above methods to to customize the processing. (Or they may choose to override this method if dramatically different processing is required.)

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### writeRequestBody

    protected boolean writeRequestBody(HttpState state,
                                       HttpConnection conn)
                                throws IOException,
                                       HttpException

  Writes the request body to the given `connection`.

  This method should return `true` if the request body was actually sent (or is empty), or `false` if it could not be sent for some reason.

  This implementation writes nothing and returns `true`.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Returns:
    `true`
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

### writeRequestHeaders

    protected void writeRequestHeaders(HttpState state,
                                       HttpConnection conn)
                                throws IOException,
                                       HttpException

  Writes the request headers to the given `connection`.

  This implementation invokes `addRequestHeaders(HttpState,HttpConnection)`, and then writes each header to the request stream.

  Subclasses may want to override this method to to customize the processing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `addRequestHeaders(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)`, `getRequestHeaders()`

### writeRequestLine

    protected void writeRequestLine(HttpState state,
                                    HttpConnection conn)
                             throws IOException,
                                    HttpException

  Writes the request line to the given `connection`.

  Subclasses may want to override this method to to customize the processing.

  Parameters:
    `state` - the `state` information associated with this method
    `conn` - the `connection` used to execute this HTTP method
  Throws:
    `IOException` - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.
    `HttpException` - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.
  See Also:
    `generateRequestLine(org.apache.commons.httpclient.HttpConnection, java.lang.String, java.lang.String, java.lang.String, java.lang.String)`

### getParams

    public HttpMethodParams getParams()

  Returns `HTTP protocol parameters` associated with this method.

  Specified by:
    `getParams` in interface `HttpMethod`
  Returns:
    HTTP parameters.
  Since:
    3.0
  See Also:
    `HttpMethodParams`

### setParams

    public void setParams(HttpMethodParams params)

  Assigns `HTTP protocol parameters` for this method.

  Specified by:
    `setParams` in interface `HttpMethod`
  Since:
    3.0
  See Also:
    `HttpMethodParams`

### getEffectiveVersion

    public HttpVersion getEffectiveVersion()

  Returns the HTTP version used with this method (may be `null` if undefined, that is, the method has not been executed)

  Returns:
    HTTP version.
  Since:
    3.0

### getProxyAuthenticationRealm

    public String getProxyAuthenticationRealm()

  Deprecated. use #getProxyAuthState()

  Returns proxy authentication realm, if it has been used during authentication process. Otherwise returns `null`.

  Returns:
    proxy authentication realm

### getAuthenticationRealm

    public String getAuthenticationRealm()

  Deprecated. use #getHostAuthState()

  Returns authentication realm, if it has been used during authentication process. Otherwise returns `null`.

  Returns:
    authentication realm

### getContentCharSet

    protected String getContentCharSet(Header contentheader)

  Returns the character set from the `Content-Type` header.

  Parameters:
    `contentheader` - The content header.
  Returns:
    String The character set.

### getRequestCharSet

    public String getRequestCharSet()

  Returns the character encoding of the request from the `Content-Type` header.

  Returns:
    String The character set.

### getResponseCharSet

    public String getResponseCharSet()

  Returns the character encoding of the response from the `Content-Type` header.

  Returns:
    String The character set.

### getRecoverableExceptionCount

    public int getRecoverableExceptionCount()

  Deprecated. no longer used Returns the number of "recoverable" exceptions thrown and handled, to allow for monitoring the quality of the connection.

  Returns:
    The number of recoverable exceptions handled by the method.

### responseBodyConsumed

    protected void responseBodyConsumed()

  A response has been consumed.

  The default behavior for this class is to check to see if the connection should be closed, and close if need be, and to ensure that the connection is returned to the connection manager - if and only if we are not still inside the execute call.

### getHostConfiguration

    public HostConfiguration getHostConfiguration()

  Deprecated. no longer applicable

  Returns the `host configuration`.

  Specified by:
    `getHostConfiguration` in interface `HttpMethod`
  Returns:
    the host configuration

### setHostConfiguration

    public void setHostConfiguration(HostConfiguration hostconfig)

  Deprecated. no longer applicable

  Sets the `host configuration`.

  Parameters:
    `hostconfig` - The hostConfiguration to set

### getMethodRetryHandler

    public MethodRetryHandler getMethodRetryHandler()

  Deprecated. use `HttpMethodParams`

  Returns the `retry handler` for this HTTP method

  Returns:
    the methodRetryHandler

### setMethodRetryHandler

    public void setMethodRetryHandler(MethodRetryHandler handler)

  Deprecated. use `HttpMethodParams`

  Sets the `retry handler` for this HTTP method

  Parameters:
    `handler` - the methodRetryHandler to use when this method executed

### getHostAuthState

    public AuthState getHostAuthState()

  Returns the target host `authentication state`

  Specified by:
    `getHostAuthState` in interface `HttpMethod`
  Returns:
    host authentication state
  Since:
    3.0

### getProxyAuthState

    public AuthState getProxyAuthState()

  Returns the proxy `authentication state`

  Specified by:
    `getProxyAuthState` in interface `HttpMethod`
  Returns:
    host authentication state
  Since:
    3.0

### isAborted

    public boolean isAborted()

  Tests whether the execution of this method has been aborted

  Returns:
    `true` if the execution of this method has been aborted, `false` otherwise
  Since:
    3.0

### isRequestSent

    public boolean isRequestSent()

  Returns `true` if the HTTP has been transmitted to the target server in its entirety, `false` otherwise. This flag can be useful for recovery logic. If the request has not been transmitted in its entirety, it is safe to retry the failed method.

  Specified by:
    `isRequestSent` in interface `HttpMethod`
  Returns:
    `true` if the request has been sent, `false` otherwise

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