Significant improvements to attaching/console handling

server/console.go

@@ -0,0 +1,21 @@
+package server
+
+import "io"
+
+type Console struct {
+	Server *Server
+	HandlerFunc *func(string)
+}
+
+var _ io.Writer = Console{}
+
+func (c Console) Write(b []byte) (int, error) {
+	if c.HandlerFunc != nil {
+		l := make([]byte, len(b))
+		copy(l, b)
+
+		(*c.HandlerFunc)(string(l))
+	}
+
+	return len(b), nil
+}