nss: Don't write empty payload on the wire

Part of #40548 Signed-off-by: David Goulet <dgoulet@torproject.org>
2024-12-06 19:41:15 +01:00 · 2022-02-08 09:30:50 -05:00
parent 9e86491cf8
commit 9bf4a9e18a
1 changed files with 4 additions and 0 deletions
@@ -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) {