diff -r 5c6d6d51d3ba -r fb9bb98a8d70 id.go
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/id.go	Fri Aug 30 17:24:39 2013 -0600
@@ -0,0 +1,29 @@
+package xmpp
+
+// Code to generate unique IDs for outgoing messages.
+
+import (
+	"fmt"
+)
+
+var id <-chan string
+
+func init() {
+	// Start the unique id generator.
+	idCh := make(chan string)
+	id = idCh
+	go func(ch chan<- string) {
+		id := int64(1)
+		for {
+			str := fmt.Sprintf("id_%d", id)
+			ch <- str
+			id++
+		}
+	}(idCh)
+}
+
+// This function may be used as a convenient way to generate a unique
+// id for an outgoing iq, message, or presence stanza.
+func NextId() string {
+	return <-id
+}