server use sqlite

pkg/relay/relay.go

@@ -0,0 +1,30 @@
+package relay
+
+import (
+	"net"
+	"sync"
+)
+
+// Relay 双向数据转发
+func Relay(c1, c2 net.Conn) {
+	var wg sync.WaitGroup
+	wg.Add(2)
+
+	copy := func(dst, src net.Conn) {
+		defer wg.Done()
+		buf := make([]byte, 32*1024)
+		for {
+			n, err := src.Read(buf)
+			if n > 0 {
+				dst.Write(buf[:n])
+			}
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	go copy(c1, c2)
+	go copy(c2, c1)
+	wg.Wait()
+}