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@@ -22,8 +22,16 @@
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#define MQTT_MAX_CLIENT_LEN 64
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#define MQTT_MAX_USER_LEN 64
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#define MQTT_MAX_PASS_LEN 64
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-#define MQTT_SEND_TIMEOUT 5
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-#define MQTT_CONNECT_TIMEOUT 5
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+#define MQTT_SEND_TIMEOUT 5
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+
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+ /*
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+ * This timeout needs to be long enough for a typical TCP connect()
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+ * *and* the TLS handshake, if any. Most network stacks seem to wait
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+ * tens of seconds for connect(), and TLS can take a good deal of time
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+ * and several round trips. Because this matters only rarely, it may
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+ * as well be set pretty high.
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+ */
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+#define MQTT_CONNECT_TIMEOUT 60
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typedef enum {
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MQTT_INIT,
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