add log

Author: loongs-zhang

core/src/syscall/windows/connect.rs

@@ -50,6 +50,7 @@ impl<I: ConnectSyscall> ConnectSyscall for NioConnectSyscall<I> {
             set_non_blocking(fd);
         }
         let mut r = self.inner.connect(fn_ptr, fd, address, len);
+        eprintln!("connect {r} error:{}", Error::last_os_error());
         loop {
             if r == 0 {
                 reset_errno();
@@ -75,6 +76,7 @@ impl<I: ConnectSyscall> ConnectSyscall for NioConnectSyscall<I> {
                         &mut len,
                     );
                 }
+                eprintln!("connect getsockopt {r} error:{}", Error::last_os_error());
                 if r != 0 {
                     r = -1;
                     break;
@@ -89,6 +91,7 @@ impl<I: ConnectSyscall> ConnectSyscall for NioConnectSyscall<I> {
                     let mut address_len = std::mem::zeroed();
                     r = getpeername(fd, &mut address, &mut address_len);
                 }
+                eprintln!("getpeername {r} error:{}", Error::last_os_error());
             } else if errno != Some(WSAEINTR) {
                 break;
             }