Slow progress

The web server is progressing, but slowly. I have got to a stage where I can receive and parse the http header and possibly content from a web browser. However when I send a response it seems to be created correctly at the server end, but it doesn't seem to parse properly at the browser end. The trouble is I can't see what the browser is receiving. However it is early days and this is at least progress. Once I get this working the server side of the application should be nice and simple.