Package org.apache.http

Interface HttpMessage

All Known Subinterfaces:
CloseableHttpResponse, HttpEntityEnclosingRequest, HttpRequest, HttpResponse, HttpUriRequest
All Known Implementing Classes:
AbstractExecutionAwareRequest, AbstractHttpMessage, BaseDavRequest, BasicHttpEntityEnclosingRequest, BasicHttpRequest, BasicHttpResponse, EntityEnclosingRequestWrapper, HttpBind, HttpCheckin, HttpCheckout, HttpCopy, HttpDelete, HttpDelete, HttpEntityEnclosingRequestBase, HttpGet, HttpHead, HttpLabel, HttpLock, HttpMerge, HttpMkcol, HttpMkworkspace, HttpMove, HttpOptions, HttpOptions, HttpOrderpatch, HttpPatch, HttpPoll, HttpPost, HttpPropfind, HttpProppatch, HttpPut, HttpRebind, HttpReport, HttpRequestBase, HttpRequestWrapper, HttpSearch, HttpSubscribe, HttpTrace, HttpUnbind, HttpUnlock, HttpUnsubscribe, HttpUpdate, HttpVersionControl, RequestWrapper
public interface HttpMessage
HTTP messages consist of requests from client to server and responses from server to client. 
     HTTP-message   = Request | Response     ; HTTP/1.1 messages

HTTP messages use the generic message format of RFC 822 for transferring entities (the payload of the message). Both types of message consist of a start-line, zero or more header fields (also known as "headers"), an empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header fields, and possibly a message-body. 

      generic-message = start-line
                        *(message-header CRLF)
                        CRLF
                        [ message-body ]
      start-line      = Request-Line | Status-Line
Since:
4.0

  • Method Details

    • getProtocolVersion

      ProtocolVersion getProtocolVersion()
      Returns the protocol version this message is compatible with.

    • containsHeader

      boolean containsHeader(String name)
      Checks if a certain header is present in this message. Header values are ignored.
      Parameters:
      name - the header name to check for.
      Returns:
      true if at least one header with this name is present.

    • getHeaders

      Header[] getHeaders(String name)
      Returns all the headers with a specified name of this message. Header values are ignored. Headers are orderd in the sequence they will be sent over a connection.
      Parameters:
      name - the name of the headers to return.
      Returns:
      the headers whose name property equals name.

    • getFirstHeader

      Header getFirstHeader(String name)
      Returns the first header with a specified name of this message. Header values are ignored. If there is more than one matching header in the message the first element of getHeaders(String) is returned. If there is no matching header in the message null is returned.
      Parameters:
      name - the name of the header to return.
      Returns:
      the first header whose name property equals name or null if no such header could be found.

    • getLastHeader

      Header getLastHeader(String name)
      Returns the last header with a specified name of this message. Header values are ignored. If there is more than one matching header in the message the last element of getHeaders(String) is returned. If there is no matching header in the message null is returned.
      Parameters:
      name - the name of the header to return.
      Returns:
      the last header whose name property equals name. or null if no such header could be found.

    • getAllHeaders

      Header[] getAllHeaders()
      Returns all the headers of this message. Headers are orderd in the sequence they will be sent over a connection.
      Returns:
      all the headers of this message

    • addHeader

      void addHeader(Header header)
      Adds a header to this message. The header will be appended to the end of the list.
      Parameters:
      header - the header to append.

    • addHeader

      void addHeader(String name, String value)
      Adds a header to this message. The header will be appended to the end of the list.
      Parameters:
      name - the name of the header.
      value - the value of the header.

    • setHeader

      void setHeader(Header header)
      Overwrites the first header with the same name. The new header will be appended to the end of the list, if no header with the given name can be found.
      Parameters:
      header - the header to set.

    • setHeader

      void setHeader(String name, String value)
      Overwrites the first header with the same name. The new header will be appended to the end of the list, if no header with the given name can be found.
      Parameters:
      name - the name of the header.
      value - the value of the header.

    • setHeaders

      void setHeaders(Header[] headers)
      Overwrites all the headers in the message.
      Parameters:
      headers - the array of headers to set.

    • removeHeader

      void removeHeader(Header header)
      Removes a header from this message.
      Parameters:
      header - the header to remove.

    • removeHeaders

      void removeHeaders(String name)
      Removes all headers with a certain name from this message.
      Parameters:
      name - The name of the headers to remove.

    • headerIterator

      HeaderIterator headerIterator()
      Returns an iterator of all the headers.
      Returns:
      Iterator that returns Header objects in the sequence they are sent over a connection.

    • headerIterator

      HeaderIterator headerIterator(String name)
      Returns an iterator of the headers with a given name.
      Parameters:
      name - the name of the headers over which to iterate, or null for all headers
      Returns:
      Iterator that returns Header objects with the argument name in the sequence they are sent over a connection.

    • getParams

      @Deprecated HttpParams getParams()
      Deprecated.
      (4.3) use configuration classes provided 'org.apache.http.config' and 'org.apache.http.client.config'
      Returns the parameters effective for this message as set by setParams(HttpParams).

    • setParams

      @Deprecated void setParams(HttpParams params)
      Deprecated.
      (4.3) use configuration classes provided 'org.apache.http.config' and 'org.apache.http.client.config'
      Provides parameters to be used for the processing of this message.
      Parameters:
      params - the parameters