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mbedtls: Fix reads getting stuck when the socket has disconnected

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We've seen this behaviour when iOS resumes from sleep:

dbg> 0x11cd03750: ssl err dbg> lws_ssl_capable_read: WANT_READ
dbg> 0x11cd03750: LWS_SSL_CAPABLE_MORE_SERVICE
dbg> SSL Capable more service
dbg> 0x11cd03750: SSL_read says -1
dbg> 0x11cd03750: ssl err 2 errno 57
dbg> lws_ssl_capable_read: WANT_READ
dbg> 0x11cd0375dbg> SSL Capable more service
dbg> 0x11cd03750: SSL_read says -1
dbg> 0x11cd03750: ssl err 2 errno 57
dbg> lws_ssl_capable_read: WANT_READ
This commit is contained in:
Santeri Hernejärvi 2019-03-14 12:05:35 +01:00 • committed by Andy Green
parent 274b491080
commit 5d1cd3cb4b
1 changed files with 5 additions and 0 deletions
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5
lib/tls/mbedtls/ssl.c
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@ -83,6 +83,11 @@ lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len)
if (n < 0) {
m = SSL_get_error(wsi->tls.ssl, n);
lwsl_debug("%p: ssl err %d errno %d\n", wsi, m, errno);
if (errno == LWS_ENOTCONN) {
/* If the socket isn't connected anymore, bail out. */
wsi->socket_is_permanently_unusable = 1;
return LWS_SSL_CAPABLE_ERROR;
}
if (m == SSL_ERROR_ZERO_RETURN ||
m == SSL_ERROR_SYSCALL)
return LWS_SSL_CAPABLE_ERROR;