chore: linter: canonicalheader

Signed-off-by: Jakob Borg <jakob@kastelo.net>

cmd/infra/stcrashreceiver/util.go

@@ -23,7 +23,7 @@ import (
 // remote IP, and the current month.
 func userIDFor(req *http.Request) string {
 	addr := req.RemoteAddr
-	if fwd := req.Header.Get("x-forwarded-for"); fwd != "" {
+	if fwd := req.Header.Get("X-Forwarded-For"); fwd != "" {
 		addr = fwd
 	}
 	if host, _, err := net.SplitHostPort(addr); err == nil {

cmd/stdiscosrv/apisrv.go

@@ -350,7 +350,7 @@ func certificateBytes(req *http.Request) ([]byte, error) {
 
 	var bs []byte
 
-	if hdr := req.Header.Get("X-SSL-Cert"); hdr != "" {
+	if hdr := req.Header.Get("X-Ssl-Cert"); hdr != "" {
 		if strings.Contains(hdr, "%") {
 			// Nginx using $ssl_client_escaped_cert
 			// The certificate is in PEM format with url encoding.

cmd/syncthing/cli/client.go

@@ -113,7 +113,7 @@ func (c *apiClient) Endpoint() string {
 }
 
 func (c *apiClient) Do(req *http.Request) (*http.Response, error) {
-	req.Header.Set("X-API-Key", c.apikey)
+	req.Header.Set("X-Api-Key", c.apikey)
 	resp, err := c.Client.Do(req)
 	if err != nil {
 		return nil, err