telnetd: add another handshake example in comments, no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/networking/telnetd.c b/networking/telnetd.c
index eaaf29bce0a6cb93c627c83b197d9b437a74120f..1de3abcc77510b22786ac8d5b46309afbbd0e501 100644 (file)
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -154,6 +154,11 @@ safe_write_to_pty_decode_iac(struct tsession *ts)
         * Example: we get this from our own (bbox) telnet client:
         * read(5, "\377\374\1""\377\373\37""\377\372\37\0\262\0@\377\360""\377\375\1""\377\375\3"):
         * IAC WONT ECHO, IAC WILL NAWS, IAC SB NAWS <cols> <rows> IAC SE, IAC DO SGA
+        * Another example (telnet-0.17 from old-netkit):
+        * read(4, "\377\375\3""\377\373\30""\377\373\37""\377\373 ""\377\373!""\377\373\"""\377\373'"
+        * "\377\375\5""\377\373#""\377\374\1""\377\372\37\0\257\0I\377\360""\377\375\1"):
+        * IAC DO SGA, IAC WILL TTYPE, IAC WILL NAWS, IAC WILL TSPEED, IAC WILL LFLOW, IAC WILL LINEMODE, IAC WILL NEW_ENVIRON,
+        * IAC DO STATUS, IAC WILL XDISPLOC, IAC WONT ECHO, IAC SB NAWS <cols> <rows> IAC SE, IAC DO ECHO
         */
        if (wr <= 1) {
                /* Only the single IAC byte is in the buffer, eat it