From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Thu, 14 Apr 2022 11:46:59 +0000 (+0200)
Subject: doveadm: Fix hang when flushing a corked print-ostream
X-Git-Tag: 2.3.19~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=865fb4f3c1d7cd5c4740663d4f056842b843b5e7;p=thirdparty%2Fdovecot%2Fcore.git

doveadm: Fix hang when flushing a corked print-ostream

This could have happened at least with doveadm sync/backup command,
i.e. causing replication to hang until timeout is reached:

Error: write(<local>) failed: Timed out after 60 seconds
---

diff --git a/src/doveadm/doveadm-print-server.c b/src/doveadm/doveadm-print-server.c
index 86688231fd..93c6ed9253 100644
--- a/src/doveadm/doveadm-print-server.c
+++ b/src/doveadm/doveadm-print-server.c
@@ -87,6 +87,7 @@ static void doveadm_print_server_flush(void)
 	o_stream_nsend(doveadm_print_ostream,
 		       str_data(ctx.str), str_len(ctx.str));
 	str_truncate(ctx.str, 0);
+	o_stream_uncork(doveadm_print_ostream);
 
 	if (o_stream_get_buffer_used_size(doveadm_print_ostream) < IO_BLOCK_SIZE ||
 	    doveadm_print_ostream->stream_errno != 0)