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conncache: fix multi-thread use of shared connection cache

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It could accidentally let the connection get used by more than one
thread, leading to double-free and more.

Reported-by: Christopher Reid
Fixes #4544
Closes #4557
This commit is contained in:
Daniel Stenberg 2019-12-09 11:53:54 +01:00
parent 9e891ff54d
commit ee263de7a3
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GPG key ID: 5CC908FDB71E12C2
8 changed files with 58 additions and 52 deletions
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lib/http2.h
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@ -50,7 +50,7 @@ CURLcode Curl_http2_switched(struct connectdata *conn,
/* called from http_setup_conn */
void Curl_http2_setup_conn(struct connectdata *conn);
void Curl_http2_setup_req(struct Curl_easy *data);
void Curl_http2_done(struct connectdata *conn, bool premature);
void Curl_http2_done(struct Curl_easy *data, bool premature);
CURLcode Curl_http2_done_sending(struct connectdata *conn);
CURLcode Curl_http2_add_child(struct Curl_easy *parent,
struct Curl_easy *child,