Question

The topic is a bit strange, let me express myself.
I used this method to generate post requests:

http://www.jonasjohn.de/snippets/php/post-request.htm

thats ok, but after a size, I realized the datas gets changes a little, there are unwanted white spaces. Only in case of a bigger size, + a “chunked” flag appeared.
I change the Http/1.1 protocol to Http/1.0 and now the transfers look good!
But is there any backward, pitfalls?

Answer 1

Well there are a number of important differences between http 1.0 and 1.1 of course, look at this article for an overview.

One that I can directly spot as affecting your code is

    // send the request headers:
    fputs($fp, "POST $path HTTP/1.1\r\n");
    fputs($fp, "Host: $host\r\n");

The Host header field doesn’t exist in http 1.0, and that could affect your ability to post to servers that host multiple domains and/or subdomains via name based virtual hosting – the server won’t know what domain you’re calling.

As a general note, writing a post request this way is a nice exercise and it’s always good to know what goes on under the hood, but for production purposes I’d use a full-blown, well tested mechanism like cURL

And for reference:

• rfc 1945 defines http 1.0
• rfc 2616 defines http 1.1