Headers

diff -r 000000000000 -r 89d6a7a84779 Symbian3/SDK/Source/GUID-F6CF2920-9095-568B-B332-D5F4A05BD23A.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/SDK/Source/GUID-F6CF2920-9095-568B-B332-D5F4A05BD23A.dita Thu Jan 21 18:18:20 2010 +0000 @@ -0,0 +1,53 @@ + + + + + +Headers +

HTTP request and response headers are handled by the classes RHTTPHeaders and THTTPHdrVal. +Calling GetHeaderCollection() on RHTTPRequest and RHTTPResponse objects +returns the RHTTPHeaders for the HTTP request and HTTP response +respectively.

RHTTPHeaders represents the entire message header, that +is, the entire set of header fields in a request or a response. THTTPHdrVal represents +a value that a single header field can take.

HTTP will set some header fields automatically. The client is not required +to add the following to requests:

Content-Length: This +is derived from the client's request MHTTPDataSupplier.
Connection: This +is handled automatically to manage a HTTP/1.1 persistent connection. If a +client wants to indicate that the persistent connection is to close, it must +add a Connection header.
Host: This is +taken from the client's request URL. If a relative URL is supplied, the client +must add a Host header.
Transfer-Encoding: This +is added automatically if the client's request MHTTPDataSupplier specifies +an unknown overall data size.
Authorisation: This +is added automatically by the Authentication filter.

Also, HTTP's filters and protocol handler deals automatically with some +headers contained in the server response. These are:

Content-Length: This +value is provided through the response body MHTTPDataSupplier.
Connection: This +is handled automatically to manage the HTTP/1.1 persistent connection.
Location: This +is handled automatically by the Redirection filter.
Transfer-Encoding: This +is handled automatically by the protocol handler, and 'chunked' encodings +are removed before presenting the response body to the client.
WWW-Authenticate: This +is added automatically by the Authentication filter.

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