On Fri, 2008-09-12 at 03:47 -0700, JL wrote: > On Thu, Sep 11, 2008 at 10:58 PM, Alex Rousskov > <rousskov@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, 2008-09-11 at 19:11 -0700, JL wrote: > > > >> I have configured my browser to use my Squid HTTP proxy and am going > >> to the following URL to check the HTTP headers: > >> http://www.proxyjudge.biz/az.php > >> > >> Unfortunately the HTTP_KEEP_ALIVE = 300 header is not displayed and I > >> would like it to be. > > > > Squid does not forward the Keep-Alive header because Squid considers it > > a hop-by-hop header. Per HTTP protocol, hop-by-hop headers are not > > forwarded by proxies. When a client sends Keep-Alive to a proxy, the > > header is for the proxy and not for the origin server; it only applies > > to the connection that ends at the proxy. > > > > FWIW, the header itself is outdated and probably not supported by many > > HTTP agents. Squid itself uses a Connection header to signal HTTP > > connection persistence. The Connection is also a hop-by-hop header, > > naturally. > > > > It may help if you explain why you want to see that header sent to the > > script. What are you trying to accomplish or check? > Alex, thank you for taking the time to help me. An individual that is > using the proxy requires the HTTP_KEEP_ALIVE header as a script that > worked with another proxy server is now not working. The only apparent > difference is the lack of the HTTP_KEEP_ALIVE header. So, basically > the individual is claiming the lack of the HTTP_KEEP_ALIVE header is > preventing the script from working properly. A script that requires a Keep-Alive header is broken because that header is optional, hop-by-hop, and deprecated. If the individual can fix the script, please advise them that the problem is on their side. At the minimum, they can even wrap the script in a different one that sets the HTTP_KEEP_ALIVE environment variable to zero, to meet script's unfounded expectations. If the individual does not have any control over the script execution/code or does not want to change anything, you can [get somebody to] hack Squid to send a Keep-Alive header. I did not find any configuration options that would allow you to add a header to the request, unfortunately. Cheers, Alex.
