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The following page has been changed by OlegKalnichevski: http://wiki.apache.org/HttpComponents/HttpClientTutorial ------------------------------------------------------------------------------ == HTTP execution context == - Maintaining processing state. Persisting state between request executions using local context. + Originally HTTP has been designed as a stateless, response-request oriented protocol. However, real world applications often need to be able to persist state information through several logically related request-response exchanges. In order to enable applications to maintain a processing state HttpClient allows HTTP requests to be executed within a particular execution context, referred to as HTTP context. Multiple logically related requests can participate in a logical session if the same context is reused between consecutive requests. + + HTTP context functions similarly to java.util.Map. It is simply a collection of arbitrary named values. Application can populate context attributes prior to a request execution or examine the context after the execution has been completed. + + In the course of HTTP request execution HttpClient adds the following attributes to the execution context: + + * '''http.connection''' - HttpConnection instance representing the actual connection to the target server. + + * '''http.target_host''' - HttpHost instance representing the connection target. + + * '''http.proxy_host''' - HttpHost instance representing the connection proxy, if used. + + * '''http.request''' - HttpRequest instance representing the actual HTTP request. + + * '''http.response''' - HttpResponse instance representing the actual HTTP response. + + * '''http.request_sent''' - Boolean object representing the flag indicating whether the actual request has been fully transmitted to the connection target. == HTTP protocol interceptors == --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
