Implement LOG_CONNEVENTS watcher flag for connection state transitions

Add support for `watch connevents` to report opened (`conn_new`)
and closed (`conn_close`) client connections. Event log lines indicate
the connection's remote IP, remote port, and transport type.
`conn_close` events additionally supply a reason for the closing the
connection.

1 files changed, 1 insertions, 0 deletions

diff --git a/proto_bin.c b/proto_bin.c
index 70b196f..a6bf520 100644
--- a/proto_bin.c
+++ b/proto_bin.c
@@ -1032,6 +1032,7 @@ static void dispatch_bin_command(conn *c, char *extbuf) {
                 write_bin_response(c, NULL, 0, 0, 0);
                 conn_set_state(c, conn_mwrite);
                 c->close_after_write = true;
+                c->close_reason = NORMAL_CLOSE;
             } else {
                 protocol_error = 1;
             }