ps->source_address = 0;

    ps->source_address_set = 0;

    ps->source_address = (overrides->source_address_set == 0) ? base->source_address : overrides->source_address;

    ps->source_address_set = overrides->source_address_set || base->source_address_set;

static const char *

    set_source_address(cmd_parms *parms, void *dummy, const char *arg)

{

    proxy_server_conf *psf =

    ap_get_module_config(parms->server->module_config, &proxy_module);

    struct apr_sockaddr_t *addr;

    if (APR_SUCCESS == apr_sockaddr_info_get(&addr, arg, APR_UNSPEC, 0, 0, psf->pool)) {

        psf->source_address = addr;

        psf->source_address_set = 1;

    }

    else {

        return "ProxySourceAddress invalid value";

    }

    return NULL;

}

    AP_INIT_TAKE1("ProxySourceAddress", set_source_address, NULL, RSRC_CONF,

     "Configure local source IP used for request forward"),     

    apr_sockaddr_t *source_address; /* the address the proxy client will use to make requests */

    char source_address_set; /* whether or not the source address is set */

    ap_log_error(APLOG_MARK, APLOG_ERR, 0, r->server, "header %s => %s", key, value);

        if (conf->source_address) {

            rv = apr_socket_bind(*newsock, conf->source_address);

            if (rv != APR_SUCCESS) {

                ap_log_error(APLOG_MARK, APLOG_ERR, rv, s,

                    "proxy: %s: failed to bind socket to local address",

                    proxy_function);

            }

        }

    /* the local address to use for the outgoing connection */

    apr_sockaddr_t *local_addr;

        if (conf->source_address_set == 1) {

            local_addr = apr_pcalloc(conn->pool, sizeof(apr_sockaddr_t));

            memcpy(local_addr, conf->source_address, sizeof(apr_sockaddr_t));

            local_addr->pool = conn->pool;

            rv = apr_socket_bind(newsock, local_addr);

            if (rv != APR_SUCCESS) {

                ap_log_error(APLOG_MARK, APLOG_ERR, rv, s,

                    "proxy: %s: failed to bind socket to local address", 

                    proxy_function);

            }

        }