GSMClient GSMSSLClient: squashme retry write

  Additional retries on SSLCLient are needed for mqtt over tls

Author: pennam

libraries/GSM/src/GSMClient.h

@@ -26,10 +26,12 @@
 namespace arduino {
 
 class GSMClient : public AClient {
+private:
   NetworkInterface *getNetwork() {
     return GSM.getNetwork();
   }
 
+public:
   size_t write(uint8_t b) {
     int ret = 0;
     do {

libraries/GSM/src/GSMSSLClient.h

@@ -32,6 +32,25 @@ class GSMSSLClient : public arduino::ASslClient {
   NetworkInterface *getNetwork() {
     return GSM.getNetwork();
   }
+
+public:
+  size_t write(uint8_t b) {
+    int ret = 0;
+    do {
+      ret = client->write(b);
+      delay(0);
+    } while (ret == 0 && status());
+    return ret;
+  }
+
+  size_t write(const uint8_t *buf, size_t size) {
+    int ret = 0;
+    do {
+      ret = client->write(buf, size);
+      delay(0);
+    } while (ret == 0 && status());
+    return ret;
+  }
 };
 
 }