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Retry SSL_read on ERROR_WANT_READ. 

This resolves the retry issue in general, but also the specific case where a TLS 1.3 server sends a post-handshake NewSessionTicket message prior to appdata.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3925)
This commit is contained in:
Roelof duToit 2017-07-13 13:07:26 -04:00 committed by Matt Caswell
parent f315b66571
commit a889e9796b
1 changed files with 5 additions and 5 deletions
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10
apps/s_time.c
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@ -234,8 +234,8 @@ int s_time_main(int argc, char **argv)
fmt_http_get_cmd, www_path);
if (SSL_write(scon, buf, buf_len) <= 0)
goto end;
while ((i = SSL_read(scon, buf, sizeof(buf))) > 0)
bytes_read += i;
while ((i = SSL_read(scon, buf, sizeof(buf))) > 0 || SSL_get_error(scon, i) == SSL_ERROR_WANT_READ)
if (i > 0) bytes_read += i;
}
#ifdef NO_SHUTDOWN
SSL_set_shutdown(scon, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
@ -292,7 +292,7 @@ int s_time_main(int argc, char **argv)
fmt_http_get_cmd, www_path);
if (SSL_write(scon, buf, buf_len) <= 0)
goto end;
while (SSL_read(scon, buf, sizeof(buf)) > 0)
while ((i = SSL_read(scon, buf, sizeof(buf))) > 0 || SSL_get_error(scon, i) == SSL_ERROR_WANT_READ)
continue;
}
#ifdef NO_SHUTDOWN
@ -323,8 +323,8 @@ int s_time_main(int argc, char **argv)
www_path);
if (SSL_write(scon, buf, strlen(buf)) <= 0)
goto end;
while ((i = SSL_read(scon, buf, sizeof(buf))) > 0)
bytes_read += i;
while ((i = SSL_read(scon, buf, sizeof(buf))) > 0 || SSL_get_error(scon, i) == SSL_ERROR_WANT_READ)
if (i > 0) bytes_read += i;
}
#ifdef NO_SHUTDOWN
SSL_set_shutdown(scon, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);