Introduce isInBullshitState() to restart the modem stack quicker when it breaks

components/esp_modem/include/cxx_include/esp_modem_cmux.hpp

@@ -96,6 +96,8 @@ public:
      */
     bool recover();
 
+    bool isInBullshitState() { if (m_isInBullshitState) { m_isInBullshitState = false; return true; } return false; }
+
 private:
 
     enum class protocol_mismatch_reason {
@@ -128,6 +130,9 @@ private:
     bool on_footer(CMuxFrame &frame);
     void recover_protocol(protocol_mismatch_reason reason);
 
+    //! When espressif again fucks up the recovering of the MUX
+    bool m_isInBullshitState{};
+
     std::function<bool(uint8_t *data, size_t len)> read_cb[MAX_TERMINALS_NUM];  /*!< Function pointers to read callbacks */
     std::shared_ptr<Terminal> term;                   /*!< The original terminal */
     cmux_state state;                                 /*!< CMux protocol state */

components/esp_modem/include/cxx_include/esp_modem_dte.hpp

@@ -122,6 +122,8 @@ public:
      */
     bool recover();
 
+    bool isInBullshitState();
+
 protected:
     /**
      * @brief Allows for locking the DTE

components/esp_modem/src/esp_modem_cmux.cpp

@@ -187,6 +187,7 @@ bool CMux::on_recovery(CMuxFrame &frame)
         frame.ptr = recover_ptr;
         state = cmux_state::INIT;
         ESP_LOGI("CMUX", "Protocol recovered");
+        m_isInBullshitState = true;
         if (frame.len > 1 && frame.ptr[1] == SOF_MARKER) {
             // empty frame
             frame.advance();

components/esp_modem/src/esp_modem_dte.cpp

@@ -368,6 +368,13 @@ bool DTE::recover()
     return false;
 }
 
+bool DTE::isInBullshitState()
+{
+    if (!cmux_term)
+        return false;
+    return cmux_term->isInBullshitState();
+}
+
 void DTE::handle_error(terminal_error err)
 {
     if (err == terminal_error::BUFFER_OVERFLOW ||