Even though we use select/poll to explicitly query when the nextlink
socket is ready for read, sometimes we end up reading from the socket
when it is not ready to read and then the process hangs for several
seoneds (20-30s). Avoid this situation by setting the socket to be
non-blocking, so we get a status in this case that allows us to continue.
Change-Id: I35447c23a9350176007df5455bf9451021e9856d
Signed-off-by: Arne Schwabe <a...@rfc2549.org>
---
src/openvpn/dco_linux.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/openvpn/dco_linux.c b/src/openvpn/dco_linux.c
index 1a6566aad..6f1b999bb 100644
--- a/src/openvpn/dco_linux.c
+++ b/src/openvpn/dco_linux.c
@@ -359,7 +359,9 @@ ovpn_dco_init_netlink(dco_context_t *dco)
nl_geterror(ret));
}
+ /* set close on exec and non-block on the netlink socket */
set_cloexec(nl_socket_get_fd(dco->nl_sock));
+ set_nonblock(nl_socket_get_fd(dco->nl_sock));
dco->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
if (!dco->nl_cb)
--
2.37.1 (Apple Git-137.1)
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