在 osx 上的 localhost 上運行的第一個 TCP 連接始終會正確解析發(fā)送給它的二進制文件。后續(xù)請求丟失二進制數(shù)據(jù)，只看到第一個字節(jié) [8]。我如何設(shè)置閱讀器失??？package mainimport ( "fmt" "log" "net" "os" "app/src/internal/handler" "github.com/golang-collections/collections/stack")func main() { port := os.Getenv("SERVER_PORT") s := stack.New() ln, err := net.Listen("tcp", ":8080") if err != nil { log.Fatalf("net.Listen: %v", err) } fmt.Println("Serving on " + port) for { conn, err := ln.Accept() // defer conn.Close() if err != nil { log.Fatal("ln.Accept") } go handler.Handle(conn, s) }}package handlerimport ( "fmt" "io" "log" "net" "github.com/golang-collections/collections/stack")func Handle(c net.Conn, s *stack.Stack) { fmt.Printf("Serving %s\n", c.RemoteAddr().String()) buf := make([]byte, 0, 256) tmp := make([]byte, 128) n, err := c.Read(tmp) if err != nil { if err != io.EOF { log.Fatalf("connection Read() %v", err) } return } buf = append(buf, tmp[:n]...)}日志：Serving [::1]:51699 ------------- value ---------------:QCXhoy5tBuffer Length: 9. First Value: 8Serving [::1]:51700------------- value ---------------:Buffer Length: 1. First Value: 8Serving [::1]:51701測試發(fā)送過來：push random string:QCXhoy5tpush random string:GPh0EnbSpush random string:4kJ0wN0R
1 回答
慕標5832272
TA貢獻1966條經(jīng)驗 獲得超4個贊
Reader的文檔說：
Read reads up to len(p) bytes into p. It returns the number of bytes read (0 <= n
<= len(p)) and any error encountered. Even if Read returns n < len(p), it may use
all of p as scratch space during the call. If some data is available but not
len(p) bytes, Read conventionally returns what is available instead of waiting
for more.
因此，問題的最可能原因是 Read 正在返回可用的數(shù)據(jù)（在本例中為單個字符）。您可以通過使用ioutil.ReadAll或在循環(huán)中執(zhí)行讀取來解決此問題（數(shù)據(jù)被添加到緩沖區(qū)的事實使它看起來像是最初的意圖），例如：
for {
n, err := c.Read(tmp)
if err != nil {
if err != io.EOF {
// Note that data might have also been received - you should process that
// if appropriate.
log.Fatalf("connection Read() %v", err)
return
}
break // All data received so process it
}
buf = append(buf, tmp[:n]...)
}
注意：不保證收到任何數(shù)據(jù)；您應(yīng)該在嘗試訪問它之前檢查長度（即buf[0]可能會恐慌）
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