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From John Saario <sj...@alamak.com.sg>
Subject mod_proxy/1547: No HTTP_X_FORWARDED_FOR set...
Date Fri, 12 Dec 1997 06:08:43 GMT

>Number:         1547
>Category:       mod_proxy
>Synopsis:       No HTTP_X_FORWARDED_FOR set...
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          change-request
>Submitter-Id:   apache
>Arrival-Date:   Thu Dec 11 22:10:00 PST 1997
>Originator:     sjohn@alamak.com.sg
>Release:        apache_1.3b3
FreeBSD 2.1+
It's nice if you can get the users real REMOTE_ADDR someway if you are
running a web server and the apache proxy doesn't forward this as in squid
to HTTP_X_FORWARDED_FOR ... I want to run a proxy to my other web servers
in the states but I want the real REMOTE_ADDR value for my cgi's there.
It's not designed in the current version
I'm not a C programmer but I modified /src/modules/proxy/proxy_http.c
Probably you could skip the delcaration and stuff the pointers directly
into the bvputs line ... or do it the correct way by setting the values
with the normal set header routine, wherever that is?
/* declare */
char *forwarded = r->connection->remote_ip; /* jds */

    reqhdrs_arr = table_elts(r->headers_in);
    reqhdrs = (table_entry *) reqhdrs_arr->elts;
    for (i = 0; i < reqhdrs_arr->nelts; i++) {
        if (reqhdrs[i].key == NULL || reqhdrs[i].val == NULL
        /* Clear out headers not to send */
            || !strcasecmp(reqhdrs[i].key, "Host")      /* Already sent */
            ||!strcasecmp(reqhdrs[i].key, "Proxy-Authorization"))
        bvputs(f, reqhdrs[i].key, ": ", reqhdrs[i].val, "\015\012", NULL);
/* add in */
bvputs(f, "Forwarded", ": ", "via Apache ( hacked )" , "\015\012", NULL); /* jds */
bvputs(f, "X-Forwarded-For", ": ", forwarded, "\015\012", NULL); /* jds */
/* end add in */
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