Commit: Bulk unfinished work

fx/echo.go

@@ -0,0 +1,32 @@
+package fx
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+// EchoHandler is an http.Handler that copies its request body
+// back to the response.
+type EchoHandler struct{}
+
+// NewEchoHandler builds a new EchoHandler.
+func NewEchoHandler() *EchoHandler {
+	return &EchoHandler{}
+}
+
+// ServeHTTP handles an HTTP request to the /echo endpoint.
+func (*EchoHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if _, err := io.Copy(w, r.Body); err != nil {
+		fmt.Fprintln(os.Stderr, "Failed to handle request:", err)
+	}
+}
+
+func (e *EchoHandler) Handler() http.Handler {
+	return e
+}
+
+func (*EchoHandler) Path() string {
+	return "/echo"
+}