Mail: added missing event handling after blocking events.

As long as a read event is blocked (ignored), ngx_handle_read_event()
needs to be called to make sure no further notifications will be
triggered when using level-triggered event methods, such as select() or
poll().

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mail/ngx_mail_imap_handler.c b/src/mail/ngx_mail_imap_handler.c
index 3bf09ec3c..e31e4d0c8 100644
--- a/src/mail/ngx_mail_imap_handler.c
+++ b/src/mail/ngx_mail_imap_handler.c
@@ -123,6 +123,12 @@ ngx_mail_imap_auth_state(ngx_event_t *rev)
     if (s->out.len) {
         ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "imap send handler busy");
         s->blocked = 1;
+
+        if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
+            ngx_mail_close_connection(c);
+            return;
+        }
+
         return;
     }