From c7d79f40dd7d13c6bcbf06eb59a62a2049b986e4 Mon Sep 17 00:00:00 2001
From: SRGDamia1 <sdamiano@stroudcenter.org>
Date: Sun, 15 Oct 2017 21:09:00 -0400
Subject: [PATCH] Fixed read() to not wait on closed socket

---
 src/TinyGsmClientA6.h      | 2 +-
 src/TinyGsmClientESP8266.h | 2 +-
 src/TinyGsmClientM590.h    | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/TinyGsmClientA6.h b/src/TinyGsmClientA6.h
index fe35b60..6dd9634 100644
--- a/src/TinyGsmClientA6.h
+++ b/src/TinyGsmClientA6.h
@@ -126,7 +126,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }
diff --git a/src/TinyGsmClientESP8266.h b/src/TinyGsmClientESP8266.h
index 51e9065..32cec81 100644
--- a/src/TinyGsmClientESP8266.h
+++ b/src/TinyGsmClientESP8266.h
@@ -108,7 +108,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }
diff --git a/src/TinyGsmClientM590.h b/src/TinyGsmClientM590.h
index a185e16..a5ae273 100644
--- a/src/TinyGsmClientM590.h
+++ b/src/TinyGsmClientM590.h
@@ -123,7 +123,7 @@ public:
         continue;
       }
       // TODO: Read directly into user buffer?
-      if (!rx.size()) {
+      if (!rx.size() && sock_connected) {
         at->maintain();
         //break;
       }