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-rw-r--r--plugins/mod_tls.lua7
1 files changed, 7 insertions, 0 deletions
diff --git a/plugins/mod_tls.lua b/plugins/mod_tls.lua
index 76964082..dcb2da21 100644
--- a/plugins/mod_tls.lua
+++ b/plugins/mod_tls.lua
@@ -129,6 +129,13 @@ end);
module:hook("stanza/urn:ietf:params:xml:ns:xmpp-tls:starttls", function(event)
local origin = event.origin;
if can_do_tls(origin) then
+ if origin.conn.block_reads then
+ -- we need to ensure that no data is read anymore, otherwise we could end up in a situation where
+ -- <proceed/> is sent and the socket receives the TLS handshake (and passes the data to lua) before
+ -- it is asked to initiate TLS
+ -- (not with the classical single-threaded server backends)
+ origin.conn:block_reads()
+ end
(origin.sends2s or origin.send)(starttls_proceed);
if origin.destroyed then return end
origin:reset_stream();