Udp

common/network/webudp/WuNetwork.cpp

@@ -0,0 +1,58 @@
+#include "WuNetwork.h"
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+void HexDump(const uint8_t* src, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    if (i % 8 == 0) printf("%04x ", uint32_t(i));
+
+    printf("%02x ", src[i]);
+
+    if ((i + 1) % 8 == 0) printf("\n");
+  }
+  printf("\n");
+}
+
+int MakeNonBlocking(int sfd) {
+  int flags = fcntl(sfd, F_GETFL, 0);
+  if (flags == -1) {
+    return -1;
+  }
+
+  flags |= O_NONBLOCK;
+
+  int s = fcntl(sfd, F_SETFL, flags);
+  if (s == -1) {
+    return -1;
+  }
+
+  return 0;
+}
+
+int CreateSocket(uint16_t port) {
+
+  int sfd = socket(AF_INET, SOCK_DGRAM, 0);
+  if (sfd == -1) {
+    return -1;
+  }
+
+  int enable = 1;
+  setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int));
+
+  struct sockaddr_in addr;
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(port);
+  addr.sin_addr.s_addr = INADDR_ANY;
+
+  if (bind(sfd, (struct sockaddr *) &addr, sizeof(struct sockaddr_in)) == 0)
+    return sfd;
+
+  close(sfd);
+
+  return -1;
+}