client can connect to provider and download an image.

Updated network component to add get mac address
2026-03-28 14:59:49 -04:00
parent 46d1ab6358
commit 2ced2f0b0a
10 changed files with 229 additions and 14 deletions
@@ -0,0 +1,142 @@
+// Provider communication — mDNS discovery, device registration, screen fetch.
+
+#include "provider.hpp"
+
+#include <cstdio>
+#include <cstring>
+
+#include "esp_log.h"
+#include "mdns.h"
+#include "sdkconfig.h"
+
+#include "http_client.hpp"
+#include "network.hpp"
+
+static const char *TAG = "Provider";
+
+// ── mDNS Provider Discovery ────────────────────────────────────────────────
+
+// Resolve the Provider's IP via mDNS. Returns true and fills `out_ip` on
+// success. Falls back to CONFIG_CALENDINK_PROVIDER_FALLBACK_IP if set.
+static bool resolve_provider_ip(char *out_ip, size_t out_ip_len)
+{
+  ESP_LOGI(TAG, "Resolving Provider via mDNS: %s.local",
+           CONFIG_CALENDINK_PROVIDER_MDNS_HOSTNAME);
+
+  esp_err_t err = mdns_init();
+  if (err != ESP_OK)
+  {
+    ESP_LOGE(TAG, "mDNS init failed: %s", esp_err_to_name(err));
+    goto fallback;
+  }
+
+  {
+    esp_ip4_addr_t addr = {};
+    err = mdns_query_a(CONFIG_CALENDINK_PROVIDER_MDNS_HOSTNAME, 5000, &addr);
+    if (err == ESP_OK)
+    {
+      snprintf(out_ip, out_ip_len, IPSTR, IP2STR(&addr));
+      ESP_LOGI(TAG, "Provider resolved: %s", out_ip);
+      return true;
+    }
+
+    ESP_LOGW(TAG, "mDNS resolution failed: %s", esp_err_to_name(err));
+  }
+
+fallback:
+  if (strlen(CONFIG_CALENDINK_PROVIDER_FALLBACK_IP) > 0)
+  {
+    strlcpy(out_ip, CONFIG_CALENDINK_PROVIDER_FALLBACK_IP, out_ip_len);
+    ESP_LOGW(TAG, "Using fallback IP: %s", out_ip);
+    return true;
+  }
+
+  ESP_LOGE(TAG, "No fallback IP configured. Cannot reach Provider.");
+  return false;
+}
+
+// ── Provider Communication Test ─────────────────────────────────────────────
+
+void test_provider_communication(void)
+{
+  // 1. Resolve Provider IP
+  char provider_ip[16] = {};
+  if (!resolve_provider_ip(provider_ip, sizeof(provider_ip)))
+  {
+    return;
+  }
+
+  uint16_t provider_port = CONFIG_CALENDINK_PROVIDER_PORT;
+
+  // 2. Get our own MAC address
+  uint8_t mac_bytes[6] = {};
+  esp_err_t err = get_mac_address(mac_bytes);
+  if (err != ESP_OK)
+  {
+    ESP_LOGE(TAG, "Failed to get WiFi MAC: %s", esp_err_to_name(err));
+    return;
+  }
+
+  char mac_str[18] = {};
+  snprintf(mac_str, sizeof(mac_str), "%02X:%02X:%02X:%02X:%02X:%02X",
+           mac_bytes[0], mac_bytes[1], mac_bytes[2], mac_bytes[3], mac_bytes[4],
+           mac_bytes[5]);
+  ESP_LOGI(TAG, "Client MAC: %s", mac_str);
+
+  // 3. Register with Provider: POST /api/devices/register
+  {
+    char *url =
+        http_build_url(provider_ip, provider_port, "/api/devices/register");
+    if (url == nullptr)
+    {
+      return;
+    }
+
+    char json_body[64] = {};
+    snprintf(json_body, sizeof(json_body), "{\"mac\":\"%s\"}", mac_str);
+
+    http_text_response_t resp = {};
+    err = http_post_json(url, json_body, &resp);
+
+    if (err == ESP_OK)
+    {
+      ESP_LOGI(TAG, "Register response (%d): %s", resp.status_code,
+               resp.body ? resp.body : "(empty)");
+    }
+    else
+    {
+      ESP_LOGE(TAG, "Register request failed: %s", esp_err_to_name(err));
+    }
+
+    free(resp.body);
+    free(url);
+  }
+
+  // 4. Fetch screen image: GET /api/devices/screen.png?mac=XX:XX:XX:XX:XX:XX
+  {
+    char path[80] = {};
+    snprintf(path, sizeof(path), "/api/devices/screen.png?mac=%s", mac_str);
+
+    char *url = http_build_url(provider_ip, provider_port, path);
+    if (url == nullptr)
+    {
+      return;
+    }
+
+    http_binary_response_t resp = {};
+    err = http_get_binary(url, &resp);
+
+    if (err == ESP_OK)
+    {
+      ESP_LOGI(TAG, "Screen image response (%d): %zu bytes", resp.status_code,
+               resp.data_len);
+    }
+    else
+    {
+      ESP_LOGE(TAG, "Screen image request failed: %s", esp_err_to_name(err));
+    }
+
+    free(resp.data);
+    free(url);
+  }
+}