Feature: Implement initial macOS SimpleRemoter client

client/IOCPClient.cpp

@@ -61,6 +61,10 @@ BOOL SetKeepAliveOptions(int socket, int nKeepAliveSec = 180)
         return FALSE;
     }
 
+#ifdef __APPLE__
+    // macOS: 只有 TCP_KEEPALIVE (等同于 TCP_KEEPIDLE)
+    setsockopt(socket, IPPROTO_TCP, TCP_KEEPALIVE, &nKeepAliveSec, sizeof(nKeepAliveSec));
+#else
     // 设置 TCP_KEEPIDLE (3分钟空闲后开始发送 keep-alive 包)
     if (setsockopt(socket, IPPROTO_TCP, TCP_KEEPIDLE, &nKeepAliveSec, sizeof(nKeepAliveSec)) < 0) {
         Mprintf("Failed to set TCP_KEEPIDLE\n");
@@ -80,6 +84,7 @@ BOOL SetKeepAliveOptions(int socket, int nKeepAliveSec = 180)
         Mprintf("Failed to set TCP_KEEPCNT\n");
         return FALSE;
     }
+#endif
 
     Mprintf("TCP keep-alive settings applied successfully\n");
     return TRUE;