Stop plink losing data at start of session

[u/mdw/putty] / telnet.c

diff --git a/telnet.c b/telnet.c
index 1b83a31..283ea5b 100644 (file)
--- a/telnet.c
+++ b/telnet.c
@@ -552,7 +552,7 @@ static char *telnet_init (HWND hwnd, char *host, int port, char **realhost) {
          default: return "connect(): unknown error";
        }
 
-    if (WSAAsyncSelect (s, hwnd, WM_NETEVENT, FD_READ |
+    if (hwnd && WSAAsyncSelect (s, hwnd, WM_NETEVENT, FD_READ |
                        FD_WRITE | FD_OOB | FD_CLOSE) == SOCKET_ERROR)
        switch (WSAGetLastError()) {
          case WSAENETDOWN: return "Network is down";
@@ -631,7 +631,6 @@ static int telnet_msg (WPARAM wParam, LPARAM lParam) {
                    s = INVALID_SOCKET;
                    return 0;
                }
-
                do_telnet_read (buf, ret);
            } while (in_synch);
        }
@@ -733,10 +732,16 @@ static void telnet_special (Telnet_Special code) {
     }
 }
 
+static SOCKET telnet_socket(void) { return s; }
+
+static int telnet_sendok(void) { return 1; }
+
 Backend telnet_backend = {
     telnet_init,
     telnet_msg,
     telnet_send,
     telnet_size,
-    telnet_special
+    telnet_special,
+    telnet_socket,
+    telnet_sendok
 };