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Merge remote-tracking branch 'tor-gitlab/mr/43' into maint-0.3.5

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Nick Mathewson 2020-10-07 08:09:59 -04:00
commit 968b6c30c1
2 changed files with 15 additions and 0 deletions
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5
changes/ticket40035 Normal file
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@ -0,0 +1,5 @@
o Major bugfixes (NSS):
- When running with NSS enabled, make sure that NSS knows to expect
nonblocking sockets. Previously, we set our TCP sockets as blocking,
but did not tell NSS about the fact, which in turn could lead to
unexpected blocking behavior. Fixes bug 40035; bugfix on 0.3.5.1-alpha.

10
src/lib/tls/tortls_nss.c
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@ -418,6 +418,16 @@ tor_tls_new(tor_socket_t sock, int is_server)
return NULL;
}
/* even if though the socket is already nonblocking, we need to tell NSS
* about the fact, so that it knows what to do when it says EAGAIN. */
PRSocketOptionData data;
data.option = PR_SockOpt_Nonblocking;
data.value.non_blocking = 1;
if (PR_SetSocketOption(ssl, &data) != PR_SUCCESS) {
PR_Close(ssl);
return NULL;
}
tor_tls_t *tls = tor_malloc_zero(sizeof(tor_tls_t));
tls->magic = TOR_TLS_MAGIC;
tls->context = ctx;