udp/tcp 비동기 통신은 현재 가능

impl/socket/socket.cpp

@@ -12,6 +12,7 @@ int Socket::init(int domain, int type, int protocol) {
   this->domain = domain;
 
   sock = ::socket(domain, type, protocol);
+  // sock = ::WSASocket(domain, type, protocol, NULL, 0, WSA_FLAG_OVERLAPPED);
   if (sock == INVALID_SOCKET) spdlog::critical("socket()");
 
   valid_ = true;
@@ -65,6 +66,26 @@ int Socket::bind(Address __addr) {
   return retVal;
 }
 
+int Socket::connect(Address& serveraddr) {
+  std::string addr_string = serveraddr;
+  int retVal = -1;
+  if (serveraddr.family == AF_INET)
+    retVal = ::connect(sock, (const sockaddr*)&serveraddr.addr_in,
+                       serveraddr.length);
+  else
+    retVal = ::connect(sock, (const sockaddr*)&serveraddr.addr_in6,
+                       serveraddr.length);
+  memcpy(&remoteAddr, &serveraddr, sizeof(Address));
+  if (retVal == INVALID_SOCKET) {
+#ifdef _WIN32
+    int err = WSAGetLastError();
+    spdlog::error("connect() failed: WSA error {} (0x{:X})", err, err);
+#endif
+    spdlog::error("connect()");
+  }
+  return retVal;
+}
+
 int Socket::recvfrom(void* __restrict __buf, size_t __n, int __flags,
                         struct Address& __addr) {
   std::lock_guard<std::mutex> lock(readMutex);