+/*
+ * This may be reused by local-command proxies on individual
+ * platforms.
+ */
+char *format_telnet_command(SockAddr addr, int port, const Config *cfg);
+
+/*
+ * These are implemented in cproxy.c or nocproxy.c, depending on
+ * whether encrypted proxy authentication is available.
+ */
+extern void proxy_socks5_offerencryptedauth(char *command, int *len);
+extern int proxy_socks5_handlechap (Proxy_Socket p);
+extern int proxy_socks5_selectchap(Proxy_Socket p);
+