# Class GZConnectionRequest

java.lang.Object
com.codename1.io.ConnectionRequest
com.codename1.io.gzip.GZConnectionRequest

All Implemented Interfaces:
  `IOProgressListener`

public class GZConnectionRequest extends ConnectionRequest

A connection request that can detect a GZipped response, parse it automatically and unzip it. Notice that some devices (iOS) always request gzip'ed data and always decompress it for us, however in the case of iOS it doesn't remove the gziped header. The `GZConnectionRequest` is aware of such behaviors so it's better to use that when connecting to the network (if applicable).

By default `GZConnectionRequest` doesn't request gzipped data (only unzips it when its received) but it's pretty easy to do so just add the HTTP header `Accept-Encoding: gzip` e.g.:

    GZConnectionRequest con = new GZConnectionRequest();
    con.addRequestHeader("Accept-Encoding", "gzip");

- ## Nested Class Summary

  ### Nested classes/interfaces inherited from class ConnectionRequest

  `ConnectionRequest.CachingMode, ConnectionRequest.SSLCertificate`

- ## Field Summary

  ### Fields inherited from class ConnectionRequest

  `PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_LOW, PRIORITY_NORMAL, PRIORITY_REDUNDANT`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `GZConnectionRequest()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `equals(Object o)`
  Indicates whether some other object is "equal to" this one.
  `int`
  `hashCode()`
  Returns a hash code value for the object.
  `protected void`
  `readHeaders(Object connection)`
  Allows reading the headers from the connection by calling the getHeader() method.
  `protected final void`
  `readResponse(InputStream input)`
  Overridden to convert the input stream you should now override readUnzipedResponse()
  `protected void`
  `readUnzipedResponse(InputStream input)`
  This method can be overridden instead of readResponse

  ### Methods inherited from class ConnectionRequest

  `addArgument, addArgument, addArgument, addArgumentArray, addArgumentNoEncoding, addArgumentNoEncoding, addArgumentNoEncodingArray, addArguments, addExceptionListener, addRequestHeader, addResponseCodeListener, addResponseListener, buildRequestBody, cacheUnmodified, canGetSSLCertificates, checkSSLCertificates, cookieReceived, cookieSent, createRequestURL, downloadImageToFileSystem, downloadImageToFileSystem, downloadImageToFileSystem, downloadImageToFileSystem, downloadImageToFileSystem, downloadImageToFileSystem, downloadImageToStorage, downloadImageToStorage, downloadImageToStorage, downloadImageToStorage, downloadImageToStorage, downloadImageToStorage, fetchJSON, fetchJSONAsync, fireResponseListener, getCachedData, getCacheMode, getContentLength, getContentType, getCookieHeader, getDefaultCacheMode, getDefaultUserAgent, getDestinationFile, getDestinationStorage, getDisposeOnCompletion, getHeader, getHeaderFieldNames, getHeaders, getHttpMethod, getPriority, getReadTimeout, getRequestBody, getRequestBodyData, getResponseCode, getResponseContentType, getResponseData, getResponseErrorMessage, getResposeCode, getShowOnInit, getSilentRetryCount, getSSLCertificates, getTimeout, getUrl, getUserAgent, getYield, handleErrorResponseCode, handleException, handleIOException, handleRuntimeException, hasResponseListeners, initConnection, initCookieHeader, ioStreamUpdate, isCheckSSLCertificates, isCookiesEnabled, isCookiesEnabledDefault, isDefaultFollowRedirects, isDuplicateSupported, isFailSilently, isFollowRedirects, isHandleErrorCodesInGlobalErrorHandler, isInsecure, isKilled, isNativeCookieSharingSupported, isPausable, isPaused, isPost, isReadRequest, isReadResponseForErrors, isReadResponseForErrorsDefault, isReadTimeoutSupported, isRedirecting, isWriteRequest, kill, onRedirect, pause, postResponse, purgeCache, purgeCacheDirectory, readErrorCodeHeaders, removeAllArguments, removeArgument, removeExceptionListener, removeRequestHeader, removeRequestHeaderIfUnchanged, removeResponseCodeListener, removeResponseListener, resume, retry, setCacheMode, setCheckSSLCertificates, setChunkedStreamingMode, setContentType, setCookieHeader, setCookiesEnabled, setCookiesEnabledDefault, setDefaultCacheMode, setDefaultFollowRedirects, setDefaultUserAgent, setDestinationFile, setDestinationStorage, setDisposeOnCompletion, setDuplicateSupported, setFailSilently, setFollowRedirects, setHandleErrorCodesInGlobalErrorHandler, setHttpMethod, setInsecure, setKilled, setPaused, setPost, setPriority, setReadRequest, setReadResponseForErrors, setReadResponseForErrorsDefault, setReadTimeout, setRequestBody, setRequestBody, setShowOnInit, setSilentRetryCount, setTimeout, setUrl, setUseNativeCookieStore, setUserAgent, setWriteRequest, shouldAutoCloseResponse, shouldConvertPostToGetOnRedirect, shouldStop, shouldWriteUTFAsGetBytes, validate`

  ### Methods inherited from class Object

  `clone, getClass, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### GZConnectionRequest

    public GZConnectionRequest()

- ## Method Details

  - ### equals

    public boolean equals(Object o)
    Description copied from class: `ConnectionRequest`
    Indicates whether some other object is "equal to" this one. The equals method implements an equivalence relation: It is reflexive: for any reference value x, x.equals(x) should return true. It is symmetric: for any reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true. It is transitive: for any reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true. It is consistent: for any reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the object is modified. For any non-null reference value x, x.equals(null) should return false. The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any reference values x and y, this method returns true if and only if x and y refer to the same object (x==y has the value true).
    Overrides:
      `equals` in class `ConnectionRequest`

  - ### hashCode

    public int hashCode()
    Returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable. The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables. As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)
    Overrides:
      `hashCode` in class `ConnectionRequest`

  - ### readHeaders

    protected void readHeaders(Object connection) throws IOException

    Allows reading the headers from the connection by calling the getHeader() method.

    ###### Parameters

    - `connection`: used when invoking getHeader

    ###### Throws

    - `java.io.IOException`: thrown on failure
    Overrides:
      `readHeaders` in class `ConnectionRequest`
    Throws:
      `IOException`

  - ### readResponse

    protected final void readResponse(InputStream input) throws IOException
    Overridden to convert the input stream you should now override readUnzipedResponse()
    Overrides:
      `readResponse` in class `ConnectionRequest`
    Throws:
      `IOException`

  - ### readUnzipedResponse

    protected void readUnzipedResponse(InputStream input) throws IOException

    This method can be overridden instead of readResponse

    ###### Parameters

    - `input`: an input stream that is guaranteed to be deflated
    Throws:
      `IOException`