in reply to Http connection manipulations

I'm not sure I understand your structure. The phrase "parent-proxies" isn't clear to me. I don't understand what socket connections exist. Client to proxy to "parent-proxy"? In that case I'd call them "servers"; they're not in any sense proxies.

Your question looks either trivial or obviously impossible, depending on what the actual structure is. Either the code with the content to return has the open socket from the client, or it doesn't. If it does, just write it there. If it doesn't, no hope. (Possibly by restructuring things completely, it could be made possible.) But my lack of understanding of the structure probably means it's not like this.

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Re^2: Http connection manipulations
by kazak (Beadle) on Jan 11, 2012 at 08:33 UTC

    1. custom proxy = perl HTTP::Proxy

    2. Squid used for roundrobin traffic between 10 external proxy servers.

    3. System:

    clients<->HTTP::Proxy<->SQUID<-ROUND_ROBIN->External Proxy servers (Parent-proxies 1...10)

    .

    Problem resides here clients<->HTTP::Proxy

    If one of external parent proxy is dead, repeat request through another external parent proxy. Some clients can't follow redirects, so the solution as (far as I can say, but it's may be wrong) is to return content with LWPUserAgent for example, and write it to the "appropriate" connection (from a client to a custom proxy, it can be identified by port, while it's open). I have a working code it's working for redirection, but since not all clients can follow it I have no choice but try to do this thing.
[reply]

      1. custom proxy = perl HTTP::Proxy
   . . .
clients<->HTTP::Proxy<->SQUID<-ROUND_ROBIN->External Proxy servers (Pa
+rent-proxies 1...10) 
   
Problem resides here clients<->HTTP::Proxy

      [download]

      If I understand your problem (maybe), how do you know which server "SQUID" selects? Second, you now become the single point of failure in your network. Third, Squid is a caching proxy, so if configured correctly, shouldn't it being redirecting to a running server?

      I have never used/configured Squid, but maybe the correct solution is in reconfiguring Squid?

      Good Luck.

      "Well done is better than well said." - Benjamin Franklin

[reply]
[d/l]
        Unfortunately squid is unable solve this, but he's doing his part with roundrobin. My task now is to implement sockets manipulation or to find a new way to make clients to follow redirects.
[reply]

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