vcl

vcl

backend F_default {
    .host = "origin-imgry.pressly.com";
    .port = "80";
}

backend F_s3_host {
    .host = "imgrydb.pressly.com.s3.amazonaws.com";
    .port = "80";
}

sub vcl_recv {
     set req.backend = F_default;
     if( req.http.host == "imgrydb.pressly.com" ) {
       set req.backend = F_s3_host;
     }

     if (req.restarts == 0) {
 	     if (req.http.x-forwarded-for) {
     	    set req.http.X-Forwarded-For = 	req.http.X-Forwarded-For + ", " + client.ip;
  	   } else {
 	      set req.http.X-Forwarded-For = client.ip;
  	   }
     }
     if (req.request != "GET" &&
       req.request != "HEAD" &&
       req.request != "PUT" &&
       req.request != "POST" &&
       req.request != "TRACE" &&
       req.request != "OPTIONS" &&
       req.request != "DELETE") {
         /* Non-RFC2616 or CONNECT which is weird. */
         return (pipe);
     }
     if (req.request != "GET" && req.request != "HEAD") {
         /* We only deal with GET and HEAD by default */
         return (pass);
     }
     if (req.http.Authorization || req.http.Cookie) {
         /* Not cacheable by default */
         return (pass);
     }
     return (lookup);
}

sub vcl_fetch {
  if (beresp.status == 302) {
    set beresp.ttl = 3600 s;
    set beresp.http.X-Need-Restart = "1";
    return (deliver);
  }
  return (deliver);
}


sub vcl_deliver {
  if (resp.http.X-Need-Restart == "1") {
    unset resp.http.X-Need-Restart;
    set resp.http.location = regsub(resp.http.location,"^http://","");
    set req.http.host = regsub(resp.http.location,"/.*$","");
    set req.url = regsub(resp.http.location,"^[^/]*","");
    return(restart);
  }
  return (deliver);
}