[gnurl] 184/282: pause: force-drain the transfer on unpause

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ng0 pushed a commit to branch master
in repository gnurl.

commit fa0216b294af4c7113a9040ca65eefc7fc18ac1c
Author: Daniel Stenberg <address@hidden>
AuthorDate: Fri Feb 28 23:55:05 2020 +0100

    pause: force-drain the transfer on unpause
    
    ... since the socket might not actually be readable anymore when for
    example the data is already buffered in the TLS layer.
    
    Fixes #4966
    Reported-by: Anders Berg
    Closes #5000
---
 lib/easy.c     | 1 +
 lib/transfer.c | 5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/easy.c b/lib/easy.c
index 454621076..1a6912748 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -1033,6 +1033,7 @@ CURLcode curl_easy_pause(struct Curl_easy *data, int 
action)
      to have this handle checked soon */
   if((newstate & (KEEP_RECV_PAUSE|KEEP_SEND_PAUSE)) !=
      (KEEP_RECV_PAUSE|KEEP_SEND_PAUSE)) {
+    data->state.drain++;
     Curl_expire(data, 0, EXPIRE_RUN_NOW); /* get this handle going again */
     if(data->multi)
       Curl_update_timer(data->multi);
diff --git a/lib/transfer.c b/lib/transfer.c
index ead8b36db..827076183 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2019, Daniel Stenberg, <address@hidden>, et al.
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <address@hidden>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -1217,7 +1217,8 @@ CURLcode Curl_readwrite(struct connectdata *conn,
   else
     fd_write = CURL_SOCKET_BAD;
 
-  if(conn->data->state.drain) {
+  if(data->state.drain) {
+    data->state.drain--;
     select_res |= CURL_CSELECT_IN;
     DEBUGF(infof(data, "Curl_readwrite: forcibly told to drain data\n"));
   }

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