Expect / telnet skips characters

[kajkaj]

Hello,

I have an Expect script containing:

send -- "i 1 liabETH0=$liabETH0\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 2 liabETH1=$liabETH1\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 3 liabIP0=$liabIP0\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 4 liabIP1=$liabIP1\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 5 liabHOST=$liabHOST\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 6 liabJFFS2=$liabJFFS2\r"
sleep 1
expect -re ".*\r
Param>"
sleep 1
send -- "i 7 liabRUN=$liabRUN\r"
sleep 1
expect -re ".*\r
Param>"

...but I get some strange hickups. Every now and then a letter disappears in the output I see in my terminal. If for instance $liabHOST is "name.domain.dk" i see

Param>i 5 liabHOST=nme.domain.dk

but in the program in question (a bootloader) did get the full string when I check afterwards. liabHOST is "name.domain.dk".

These random hickups are really bugging me, as I need to present the output from the expect script in a Gtk UI, and sometimes this fails with a "Gtk-CRITICAL **: gtk_text_buffer_emit_insert: assertion `g_utf8_validate (text, len, NULL)' failed" error, whenever the expect scripts do something strange.,

Can anyone point me in the direction of a solution?

[RobinVossen]

Thats since Telnet Sends while it is connected.
So everytime you hit a button he sends that you hit that button.
I did know how to fix it.. but well, sorry I forgot.

Check with TCPDump then you see you send everything..

[kajkaj]

Thanks for the reply - it seems that the program I used to do the communication was the one dropping characters.