Fix for issue #2460

context.go

@@ -102,6 +102,7 @@ func (c *Context) reset() {
 // Copy returns a copy of the current context that can be safely used outside the request's scope.
 // This has to be used when the context has to be passed to a goroutine.
 func (c *Context) Copy() *Context {
+	c.mu.Lock()
 	cp := Context{
 		writermem: c.writermem,
 		Request:   c.Request,
@@ -119,6 +120,7 @@ func (c *Context) Copy() *Context {
 	paramCopy := make([]Param, len(cp.Params))
 	copy(paramCopy, cp.Params)
 	cp.Params = paramCopy
+	c.mu.Unlock()
 	return &cp
 }
 
@@ -957,7 +959,7 @@ func (c *Context) File(filepath string) {
 	http.ServeFile(c.Writer, c.Request, filepath)
 }
 
-// FileFromFS writes the specified file from http.FileSytem into the body stream in an efficient way.
+// FileFromFS writes the specified file from http.FileSystem into the body stream in an efficient way.
 func (c *Context) FileFromFS(filepath string, fs http.FileSystem) {
 	defer func(old string) {
 		c.Request.URL.Path = old