initial foundation

Definitely doesn't work, certainly has the right ideas.

bittorrent/udp/connection_id_test.go

@@ -0,0 +1,43 @@
+// Copyright 2016 Jimmy Zelinskie
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package udp
+
+import (
+	"net"
+	"testing"
+	"time"
+)
+
+var golden = []struct {
+	createdAt int64
+	now       int64
+	ip        string
+	key       string
+	valid     bool
+}{
+	{0, 1, "127.0.0.1", "", true},
+	{0, 420420, "127.0.0.1", "", false},
+	{0, 0, "[::]", "", true},
+}
+
+func TestVerification(t *testing.T) {
+	for _, tt := range golden {
+		cid := NewConnectionID(net.ParseIP(tt.ip), time.Unix(tt.createdAt, 0), tt.key)
+		got := ValidConnectionID(cid, net.ParseIP(tt.ip), time.Unix(tt.now, 0), time.Minute, tt.key)
+		if got != tt.valid {
+			t.Errorf("expected validity: %t got validity: %t", tt.valid, got)
+		}
+	}
+}