TELNET transfers and SOCKS handshakes are blocking too

docs/libcurl/libcurl-multi.3

@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -136,6 +136,8 @@ the future, you should be aware of the following current restrictions:
  - GnuTLS SSL connections
  - Active FTP connections
  - HTTP proxy CONNECT operations
+ - SOCKS proxy handshakes
  - TFTP transfers
  - file:// transfers
+ - TELNET transfers
 .fi