Use epoch milliseconds instead of std::rand() to seed the txn counter

std::rand() on MinGW on Windows 7, at least in debug mode, nicely generates the same value across runs, reliably leading to messages loss as the server discards them.

1 files changed, 1 insertions, 2 deletions

diff --git a/connectiondata.cpp b/connectiondata.cpp
index cd91ef27..6f15577e 100644
--- a/connectiondata.cpp
+++ b/connectiondata.cpp
@@ -21,7 +21,6 @@
 #include "logging.h"
 
 #include <QtNetwork/QNetworkAccessManager>
-#include <cstdlib>
 
 using namespace QMatrixClient;
 
@@ -38,7 +37,7 @@ struct ConnectionData::Private
     QString lastEvent;
 
     mutable unsigned int txnCounter = 0;
-    const int id = std::rand(); // We don't really care about pure randomness
+    const qint64 id = QDateTime::currentMSecsSinceEpoch();
 };
 
 ConnectionData::ConnectionData(QUrl baseUrl)