MM-53165 Add X-Forwarded-For header to audit for rest api calls (#24390)

* Add X-Forwarded-For header to audit for rest api calls

* fix unit test

server/channels/app/audit.go

@@ -89,10 +89,11 @@ func (a *App) MakeAuditRecord(event string, initialStatus string) *audit.Record
 			audit.KeyClusterID: a.GetClusterId(),
 		},
 		Actor: audit.EventActor{
-			UserId:    userID,
-			SessionId: "",
-			Client:    fmt.Sprintf("server %s-%s", model.BuildNumber, model.BuildHash),
-			IpAddress: "",
+			UserId:        userID,
+			SessionId:     "",
+			Client:        fmt.Sprintf("server %s-%s", model.BuildNumber, model.BuildHash),
+			IpAddress:     "",
+			XForwardedFor: "",
 		},
 		EventData: audit.EventData{
 			Parameters:  map[string]interface{}{},

server/channels/app/request/context.go

@@ -16,6 +16,7 @@ type Context struct {
 	session        model.Session
 	requestId      string
 	ipAddress      string
+	xForwardedFor  string
 	path           string
 	userAgent      string
 	acceptLanguage string
@@ -58,6 +59,9 @@ func (c *Context) RequestId() string {
 func (c *Context) IPAddress() string {
 	return c.ipAddress
 }
+func (c *Context) XForwardedFor() string {
+	return c.xForwardedFor
+}
 func (c *Context) Path() string {
 	return c.path
 }
@@ -85,6 +89,9 @@ func (c *Context) SetRequestId(s string) {
 func (c *Context) SetIPAddress(s string) {
 	c.ipAddress = s
 }
+func (c *Context) SetXForwardedFor(s string) {
+	c.xForwardedFor = s
+}
 func (c *Context) SetUserAgent(s string) {
 	c.userAgent = s
 }
@@ -123,6 +130,7 @@ type CTX interface {
 	Session() *model.Session
 	RequestId() string
 	IPAddress() string
+	XForwardedFor() string
 	Path() string
 	UserAgent() string
 	AcceptLanguage() string