Implementation of HTTPD protocol, gwbuf properties and a dmeo web application

interface to test the new httpd.

server/core/session.c

@@ -756,3 +756,28 @@ session_getUser(SESSION *session)
 {
 	return (session && session->client) ? session->client->user : NULL;
 }
+
+/**
+ * Iterate over the sessions, calling a function per call
+ *
+ * @param fcn	The function to call
+ * @param data	The data to pass to each call
+ */
+void
+sessionIterate(void (*fcn)(SESSION *, void *), void *data)
+{
+SESSION		*session, *next;
+
+	spinlock_acquire(&session_spin);
+	session = allSessions;
+	while (session)
+	{
+		next = session->next;
+		spinlock_release(&session_spin);
+		(*fcn)(session, data);
+		spinlock_acquire(&session_spin);
+		session = next;
+	}
+	spinlock_release(&session_spin);
+
+}