libssh2: limit time a disconnect can take to 1 second

Closes #7271

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/vssh/libssh2.c b/lib/vssh/libssh2.c
index 8a6345b94..ec9474709 100644
--- a/lib/vssh/libssh2.c
+++ b/lib/vssh/libssh2.c
@@ -2938,6 +2938,7 @@ static CURLcode ssh_block_statemach(struct Curl_easy *data,
 {
   struct ssh_conn *sshc = &conn->proto.sshc;
   CURLcode result = CURLE_OK;
+  struct curltime dis = Curl_now();
 
   while((sshc->state != SSH_STOP) && !result) {
     bool block;
@@ -2962,6 +2963,12 @@ static CURLcode ssh_block_statemach(struct Curl_easy *data,
         return CURLE_OPERATION_TIMEDOUT;
       }
     }
+    else if(Curl_timediff(now, dis) > 1000) {
+      /* disconnect timeout */
+      failf(data, "Disconnect timed out");
+      result = CURLE_OK;
+      break;
+    }
 
     if(block) {
       int dir = libssh2_session_block_directions(sshc->ssh_session);