add TLS support for all boards

lib_standalone/ESP_SSLClient.h

@@ -0,0 +1,72 @@
+// standalone stub for ESP_SSLClient (BearSSL) - no-op TLS on host build
+// Inherits from Stream so it gets print/println via Print, matching the real API.
+
+#ifndef ESP_SSLClient_h
+#define ESP_SSLClient_h
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "Arduino.h"
+#include "Stream.h"
+#include "WiFiClient.h"
+#include <ClientPosixIPAddress.h>
+
+class ESP_SSLClient : public Stream {
+  public:
+    ESP_SSLClient() = default;
+
+    void setInsecure() {
+    }
+    void setCACert(const char *) {
+    }
+    void setCertificate(const char *) {
+    }
+    void setPrivateKey(const char *) {
+    }
+    void setBufferSizes(int, int) {
+    }
+    void setSessionTimeout(int) {
+    }
+    void setClient(WiFiClient *) {
+    }
+    void setClient(WiFiClient *, bool) {
+    }
+
+    int connect(IPAddress, uint16_t) {
+        return 0;
+    }
+    int connect(const char *, uint16_t) {
+        return 0;
+    }
+    bool connected() {
+        return false;
+    }
+
+    // Stream / Print overrides
+    int available() override {
+        return 0;
+    }
+    int read() override {
+        return -1;
+    }
+    int read(uint8_t *, size_t) {
+        return 0;
+    }
+    int peek() override {
+        return -1;
+    }
+    size_t write(uint8_t) override {
+        return 0;
+    }
+    size_t write(const uint8_t *, size_t) override {
+        return 0;
+    }
+    void flush() override {
+    }
+
+    void stop() {
+    }
+};
+
+#endif // ESP_SSLClient_h

lib_standalone/WiFiClient.h

@@ -0,0 +1,49 @@
+// standalone stub for WiFiClient (no-op networking on host build)
+
+#ifndef WiFiClient_h
+#define WiFiClient_h
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "Arduino.h"
+#include <ClientPosixIPAddress.h>
+
+class WiFiClient {
+  public:
+    WiFiClient() = default;
+
+    int connect(IPAddress, uint16_t) {
+        return 0;
+    }
+    int connect(const char *, uint16_t) {
+        return 0;
+    }
+    bool connected() {
+        return false;
+    }
+    int available() {
+        return 0;
+    }
+    int read() {
+        return -1;
+    }
+    int read(uint8_t *, size_t) {
+        return 0;
+    }
+    size_t write(uint8_t) {
+        return 0;
+    }
+    size_t write(const uint8_t *, size_t) {
+        return 0;
+    }
+    void stop() {
+    }
+
+    // ESP32 socket option passthrough (e.g. TCP_NODELAY)
+    int setSocketOption(int, int, const void *, size_t) {
+        return 0;
+    }
+};
+
+#endif // WiFiClient_h

lib_standalone/lwip/sockets.h

@@ -0,0 +1,10 @@
+// standalone stub for <lwip/sockets.h>
+// pulls in POSIX equivalents on the host build for things like IPPROTO_TCP / TCP_NODELAY.
+
+#ifndef LWIP_SOCKETS_STUB_H_
+#define LWIP_SOCKETS_STUB_H_
+
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#endif // LWIP_SOCKETS_STUB_H_