added udp logger to log over network and not uart

Added modem sleep for wif

Provider/main/udp_logger.cpp

@@ -0,0 +1,71 @@
+#include <string.h>
+
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "lwip/sockets.h"
+
+#include "types.hpp"
+
+internal constexpr char kTagUdpLogger[] = "UDP_LOG";
+
+internal int s_udp_log_socket = -1;
+internal struct sockaddr_in s_udp_dest_addr;
+internal vprintf_like_t s_original_vprintf = NULL;
+
+internal int udp_logging_vprintf(const char *fmt, va_list ap)
+{
+  char buf[512];
+  va_list ap_copy;
+  va_copy(ap_copy, ap);
+  int len = vsnprintf(buf, sizeof(buf) - 1, fmt, ap_copy);
+  va_end(ap_copy);
+
+  if (len > 0)
+  {
+    if (len >= sizeof(buf))
+    {
+      len = sizeof(buf) - 1;
+    }
+    buf[len] = '\0';
+    if (s_udp_log_socket >= 0)
+    {
+      sendto(s_udp_log_socket, buf, len, 0, (struct sockaddr *)&s_udp_dest_addr,
+             sizeof(s_udp_dest_addr));
+    }
+  }
+  return s_original_vprintf(fmt, ap);
+}
+
+internal void start_udp_logging(int port)
+{
+  s_udp_log_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+  if (s_udp_log_socket < 0)
+  {
+    ESP_LOGE(kTagUdpLogger, "Unable to create socket: errno %d", errno);
+    return;
+  }
+
+  int opt_val = 1;
+  setsockopt(s_udp_log_socket, SOL_SOCKET, SO_BROADCAST, &opt_val,
+             sizeof(opt_val));
+
+  s_udp_dest_addr.sin_family = AF_INET;
+  s_udp_dest_addr.sin_port = htons(port);
+
+#ifdef CONFIG_CALENDINK_UDP_LOG_TARGET_IP
+  if (strlen(CONFIG_CALENDINK_UDP_LOG_TARGET_IP) > 1)
+  {
+    s_udp_dest_addr.sin_addr.s_addr =
+        inet_addr(CONFIG_CALENDINK_UDP_LOG_TARGET_IP);
+  }
+  else
+  {
+    s_udp_dest_addr.sin_addr.s_addr = inet_addr("255.255.255.255");
+  }
+#else
+  s_udp_dest_addr.sin_addr.s_addr = inet_addr("255.255.255.255");
+#endif
+
+  s_original_vprintf = esp_log_set_vprintf(&udp_logging_vprintf);
+  ESP_LOGI(kTagUdpLogger, "UDP logging broadcast started on port %d", port);
+}