diff --git a/src/tcp/tcp.go b/src/tcp/tcp.go
index 0bcca40..abd5bbe 100644
--- a/src/tcp/tcp.go
+++ b/src/tcp/tcp.go
@@ -2,6 +2,7 @@ package tcp
 
 import (
 	"bufio"
+	"bytes"
 	"net"
 	"sync"
 	"time"
@@ -167,14 +168,18 @@ func pipe(conn1 net.Conn, conn2 net.Conn) {
 				return
 			}
 			writer2.Write(b1)
-			writer2.Flush()
+			if bytes.Equal(b1, "magic") {
+				writer2.Flush()
+			}
 
 		case b2 := <-chan2:
 			if b2 == nil {
 				return
 			}
 			writer1.Write(b2)
-			writer1.Flush()
+			if bytes.Equal(b2, "magic") {
+				writer1.Flush()
+			}
 		}
 	}
 }