package main import ( "fmt" "io" "log" "os" ) func main() { body, err := io.ReadAll(os.Stdin) if err != nil { log.Printf("Error: 无法读取响应体: %v\n", err) return } fmt.Printf(`HTTP/1.1 200 OK Server: openresty Date: Thu, 25 Dec 2025 05:53:44 GMT Content-Type: image/png Content-Length: %d Connection: close X-Served-By: function.coocn.cn `+"\n", len(body)) os.Stdout.Write(body) }