Add error log with mbedtls_ssl_setup error code.

cpatulea · cpatulea · commit 60881f443ccd · 2026-03-07T01:10:11.000-05:00
SSL handshake seems to fail sometimes (meshtastic/firmware#6960) but we need more detail on the mbedtls_ssl_setup error code to identify the problem. 'Web Client Rebuild' group is also seeing some '[HTTPS:E] SSL handshake failed.', we need more info to determine if it's related to the bug report above or something unrelated.
diff --git a/src/HTTPSConnection.cpp b/src/HTTPSConnection.cpp
@@ -25,6 +25,9 @@ bool HTTPSConnection::setup(mbedtls_ssl_config *sslConfig) {
   if (res == 0) {
     return true;
   } else {
+    char buf[100];
+    mbedtls_strerror(res, buf, sizeof(buf));
+    HTTPS_LOGE("mbedtls_ssl_setup res=%X (%s)", res, buf);
     mbedtls_ssl_free(&_ssl);
     return false;
   }
