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authorDenys Vlasenko2016-10-12 20:09:22 +0200
committerDenys Vlasenko2016-10-12 20:09:22 +0200
commit26d88d6bbda628f0005115bbe0f85722db267793 (patch)
tree8cf5c91cb5ae127ba9c600ba8eb17cc7af8c9e2b /networking
parentb6d421b635670939e4ec047543f84cb507e5fe9d (diff)
downloadbusybox-26d88d6bbda628f0005115bbe0f85722db267793.zip
busybox-26d88d6bbda628f0005115bbe0f85722db267793.tar.gz
telnetd: add another handshake example in comments, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking')
-rw-r--r--networking/telnetd.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/networking/telnetd.c b/networking/telnetd.c
index eaaf29b..1de3abc 100644
--- 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