- From: Tim Serong <tim.serong@conceiva.com>
- Date: Tue, 18 Mar 2003 14:25:44 +1100
- To: "Sinha, Raj (Raj)" <rajsinha@avaya.com>
- Cc: <www-lib@w3.org>
On Saturday, 15 March 2003 03:39, Sinha, Raj (Raj) wrote: > > I am sorry i did not catch the full discussion. But there > is a discussion for our project to use libwww for downloading > code into our embedded devices. I'm probably not the best one to ask, having only been working with libwww for a couple of weeks. The first thing that would scare me about using libwww in an embedded device is memory footprint. At a guess (using my Windows box) the smallest I can easily make the libwww DLLs is about 500 KB. This is based on using wwwapp, wwwcache, wwwcore, wwwdir, wwwdll, wwwfile, wwwhttp, wwwinit, wwwmime, wwwstream, wwwtrans and wwwutils. > Can you please provide me the best possible way to do this. > What modules should i look into it. They want to usee http. > can we take care of broken downloads and other such issues. Try the Library Architecture and User's Guide at http://www.w3.org/Library/User/ Also, take a look at chunk.c and LoadToFile.c in the Examples directory for a starting point for downloading data given a URL. Basically, you do this: - Initialize the library (HTProfile_newNoCacheClient) - Set up a couple of callbacks and handlers - Create a new Request object (HTRequest_new) - Start the request (HTLoadToFile or HTLoadToChunk) - Go into an event loop - Do something with the data when it has arrived. - Clean up Broken downloads can be handled by sending the request again, but give it a range of bytes to download using HTRequest_addRange. You should probably check that the server supports "Accept-Ranges: bytes" before doing this though. Finally, if you haven't already done so, digging through the mailing list archives can be quite illuminating. Regards, Tim Serong -- tim.serong@conceiva.com http://www.conceiva.com
Received on Monday, 17 March 2003 22:25:28 UTC