Re: HTTP communication

[Darin Fisher]

Tom Lee wrote:
Hello,

I have been looking for an example on how to use the HTTP functionality
properly. I am particularly interested in POST, GET, ect... The application
that I am currently working on needs to post an extremely large amount of
data - so I would be in a loop sending 2k buffers with each iteration. Anty
helop would be greatly appreciated.



tom,

you will need to use nsIUploadChannel and nsIHttpChannel to setup a post 
request.  here's some sample code:

  var chan = ...
  var uploadChan = chan.QueryInterface(
                        Components.interfaces.nsIUploadChannel);
  uploadChan.setUploadStream(content, contentType, contentLen);
  var httpChan = chan.QueryInterface(
                      Components.interfaces.nsIHttpChannel);
  httpChan.method = "POST";
now, when you call "asyncOpen" on the channel, it will issue a HTTP POST 
request instead of a GET.  it will send the data contained in "content". 
 content must support nsIInputStream.  you can either provide your own 
implementation of nsIInputStream or use one of the existing 
implementations found in xpcom/io, but beware none of the existing 
implementations are frozen.

darin