Improve gateway reliability and dashboard docs

clients/go/mxgateway/client.go

@@ -184,8 +184,11 @@ func (c *Client) callContext(ctx context.Context) (context.Context, context.Canc
 	if timeout < 0 {
 		return ctx, func() {}
 	}
-	if _, ok := ctx.Deadline(); ok {
-		return ctx, func() {}
+	if deadline, ok := ctx.Deadline(); ok {
+		timeoutDeadline := time.Now().Add(timeout)
+		if deadline.Before(timeoutDeadline) {
+			return ctx, func() {}
+		}
 	}
 	return context.WithTimeout(ctx, timeout)
 }