check ClientContext's this and _pcb once out of the ::connect() delay (…

…esp8266#4194) fix esp8266#4078
BenMens · Jan 19, 2018 · dd00db1 · dd00db1
1 parent d5c43f0
commit dd00db1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/libraries/ESP8266WiFi/src/include/ClientContext.h b/libraries/ESP8266WiFi/src/include/ClientContext.h
@@ -131,6 +131,11 @@ class ClientContext
         _op_start_time = millis();
         // This delay will be interrupted by esp_schedule in the connect callback
         delay(_timeout_ms);
+        // WiFi may have vanished during the delay (#4078)
+        if (!this || !_pcb) {
+            DEBUGV(":vnsh\r\n");
+            return 0;
+        }
         _connect_pending = 0;
         if (state() != ESTABLISHED) {
             abort();