first code/readme/license commit

misc/tests/bandwidth.go

@@ -0,0 +1,42 @@
+package main
+
+import "fmt"
+import "net"
+import "time"
+
+func main () {
+  addr, err := net.ResolveTCPAddr("tcp", "[::1]:9001")
+  if err != nil { panic(err) }
+  listener, err := net.ListenTCP("tcp", addr)
+  if err != nil { panic(err) }
+  defer listener.Close()
+
+  packetSize := 65535
+  numPackets := 65535
+
+  go func () {
+    send, err := net.DialTCP("tcp", nil, addr)
+    if err != nil { panic(err) }
+    defer send.Close()
+    msg := make([]byte, packetSize)
+    for idx := 0 ; idx < numPackets ; idx++ { send.Write(msg) }
+  }()
+
+  start := time.Now()
+  //msg := make([]byte, 1280)
+  sock, err := listener.AcceptTCP()
+  if err != nil { panic(err) }
+  defer sock.Close()
+  read := 0
+  buf := make([]byte, packetSize)
+  for {
+    n, err := sock.Read(buf)
+    read += n
+    if err != nil { break }
+  }
+  timed := time.Since(start)
+
+  fmt.Printf("%f packets per second\n", float64(numPackets)/timed.Seconds())
+  fmt.Printf("%f bits/sec\n", 8*float64(read)/timed.Seconds())
+}
+