GO Hijacker用法及代码示例

2024-07-16 04:27| 来源: 网络整理| 查看: 265

GO语言"net/http"包中"Hijacker"类型的用法及代码示例。

Hijacker 接口由ResponseWriters 实现，它允许 HTTP 处理程序接管连接。

HTTP/1.x 连接的默认 ResponseWriter 支持 Hijacker，但 HTTP/2 连接故意不支持。 ResponseWriter 包装器也可能不支持劫持者。处理程序应始终在运行时测试此能力。

用法:

type Hijacker interface { // Hijack lets the caller take over the connection. // After a call to Hijack the HTTP server library // will not do anything else with the connection. // // It becomes the caller's responsibility to manage // and close the connection. // // The returned net.Conn may have read or write deadlines // already set, depending on the configuration of the // Server.It is the caller's responsibility to set // or clear those deadlines as needed. // // The returned bufio.Reader may contain unprocessed buffered // data from the client. // // After a call to Hijack, the original Request.Body must not // be used.The original Request's Context remains valid and // is not canceled until the Request's ServeHTTP method // returns. Hijack()(net.Conn, *bufio.ReadWriter, error) }

例子：

package main import ( "fmt" "log" "net/http" ) func main() { http.HandleFunc("/hijack", func(w http.ResponseWriter, r *http.Request) { hj, ok := w.(http.Hijacker) if !ok { http.Error(w, "webserver doesn't support hijacking", http.StatusInternalServerError) return } conn, bufrw, err := hj.Hijack() if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) return } // Don't forget to close the connection: defer conn.Close() bufrw.WriteString("Now we're speaking raw TCP. Say hi: ") bufrw.Flush() s, err := bufrw.ReadString('\n') if err != nil { log.Printf("error reading string: %v", err) return } fmt.Fprintf(bufrw, "You said: %q\nBye.\n", s) bufrw.Flush() }) }

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