commit 9bf4a9e18a244dd9930a906e92d1f33bbc3bbf13
Author: David Goulet <[email protected]>
Date: Tue Feb 8 09:30:50 2022 -0500
nss: Don't write empty payload on the wire
Part of #40548
Signed-off-by: David Goulet <[email protected]>
---
src/lib/tls/tortls_nss.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/lib/tls/tortls_nss.c b/src/lib/tls/tortls_nss.c
index b1007c6218..392747e930 100644
--- a/src/lib/tls/tortls_nss.c
+++ b/src/lib/tls/tortls_nss.c
@@ -588,6 +588,10 @@ tor_tls_write(tor_tls_t *tls, const char *cp, size_t n)
tor_assert(cp || n == 0);
tor_assert(n < INT_MAX);
+ if (n == 0) {
+ return 0;
+ }
+
PRInt32 rv = PR_Write(tls->ssl, cp, (int)n);
// log_debug(LD_NET, "PR_Write(%zu) returned %d", n, (int)rv);
if (rv > 0) {
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