77     if (NULL == p->cvlist) return;  in mod_proxy_free_config()
204                 return NULL;  in mod_proxy_parse_header_opts()
215                 return NULL;  in mod_proxy_parse_header_opts()
226                 return NULL;  in mod_proxy_parse_header_opts()
237                 return NULL;  in mod_proxy_parse_header_opts()
247             return NULL;  in mod_proxy_parse_header_opts()
263             return NULL;  in mod_proxy_parse_header_opts()
297      ,{ NULL, 0,  in SETDEFAULTS_FUNC()
310         gw_plugin_config *gw = NULL;  in SETDEFAULTS_FUNC()
346                 if (NULL == cpv->v.v) return HANDLER_ERROR;  in SETDEFAULTS_FUNC()
408                 if (NULL == k) continue;  in http_header_remap_host_match()
417                     if (is_req && NULL == remap_hdrs->forwarded_host)  in http_header_remap_host_match()
425     return NULL;  in http_header_remap_host_match()
434     if (NULL == m) return alen; /*(no match; return original authority length)*/  in http_header_remap_host()
453                     if (NULL == remap_hdrs->forwarded_urlpath)  in http_header_remap_urlpath()
461             if (NULL != remap_hdrs->forwarded_urlpath) {  in http_header_remap_urlpath()
495         if (NULL == (s = strchr(s, ':')) || s[1] != '/' || s[2] != '/') return;  in http_header_remap_uri()
499         if (NULL != (s = strchr(s, '/'))) {  in http_header_remap_uri()
511         if (NULL != m) {  in http_header_remap_uri()
611     buffer *b = NULL;  in proxy_set_Forwarded()
614       : NULL;  in proxy_set_Forwarded()
622     if (flags && NULL == b) {  in proxy_set_Forwarded()
627         if (NULL != xff) {  in proxy_set_Forwarded()
642                 ipv6 = (NULL != memchr(s+j, ':', i-j)); /*(over-simplified) */  in proxy_set_Forwarded()
659         if (NULL != efor) {  in proxy_set_Forwarded()
666             int ipv6 = (NULL != strchr(efor->ptr, ':'));  in proxy_set_Forwarded()
723           : NULL;  in proxy_set_Forwarded()
727         if (NULL != eproto) {  in proxy_set_Forwarded()
740           : NULL;  in proxy_set_Forwarded()
741         if (NULL != ehost) {  in proxy_set_Forwarded()
763         if (NULL != remote_user) {  in proxy_set_Forwarded()
776     b = (NULL != efor) ? efor : &con->dst_addr_buf;  in proxy_set_Forwarded()
837 	const int remap_headers = (NULL != hctx->conf.header.urlpaths  in proxy_create_env()
838 				   || NULL != hctx->conf.header.hosts_request);  in proxy_create_env()
887 		if (NULL == vb) {  in proxy_create_env()
909 	const buffer *connhdr = NULL;  in proxy_create_env()
910 	const buffer *te = NULL;  in proxy_create_env()
911 	const buffer *upgrade = NULL;  in proxy_create_env()
1087         r->handler_module = NULL;  in proxy_response_headers()
1094     if (NULL == remap_hdrs->urlpaths && NULL == remap_hdrs->hosts_response)  in proxy_response_headers()
1121 	if (NULL != r->handler_module) return HANDLER_GO_ON;  in mod_proxy_check_extension()
1124 	if (NULL == p->conf.gw.exts) return HANDLER_GO_ON;  in mod_proxy_check_extension()
1164 				r->handler_module = NULL;  in mod_proxy_check_extension()