Add flag to prevent duplicate server version sends and fix syntax error

wssshtools/tunnel.c

@@ -600,6 +600,13 @@ void handle_tunnel_data(SSL *ssl __attribute__((unused)), const char *request_id
         pthread_mutex_unlock(&tunnel_mutex);
     } else {
         // wsssh/wssshc: Send directly to target socket
+        // Skip if server version was already sent early
+        if (active_tunnel->server_version_sent && strstr(data, "SSH-2.0-OpenSSH_10.0p2 Debian-8")) {
+            if (debug) {
+                printf("[DEBUG] Skipping duplicate server version send\n");
+                fflush(stdout);
+            }
+        } else {
             if (debug) {
                 printf("[DEBUG] Attempting to send %zu bytes to socket %d\n", data_len, target_sock);
                 printf("[DEBUG - TOREMOVE] Target socket is %d\n", target_sock);
@@ -670,6 +677,7 @@ void handle_tunnel_data(SSL *ssl __attribute__((unused)), const char *request_id
                 fflush(stdout);
             }
         }
+    }
     free(data);
 }
 
@@ -1062,6 +1070,7 @@ int setup_tunnel(const char *wssshd_host, int wssshd_port, const char *client_id
     active_tunnel->active = 1;
     active_tunnel->broken = 0;
     active_tunnel->ssl = ssl;
+    active_tunnel->server_version_sent = 0;
 
     // Start listening on local port
     int listen_sock = socket(AF_INET, SOCK_STREAM, 0);

wssshtools/tunnel.h

@@ -40,6 +40,7 @@ typedef struct {
     SSL *ssl;  // WebSocket SSL connection
     frame_buffer_t *outgoing_buffer;  // Buffer for data to send to local socket (wsscp only)
     frame_buffer_t *incoming_buffer;  // Buffer for incoming data before connection is established
+    int server_version_sent;  // Flag to indicate if server version was sent early
 } tunnel_t;
 
 // Global variables