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Added simple tx/rx statistics command (ctrl-t s)

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To display the total number of bytes transmitted/received simply perform the
'ctrl-t s' command sequence.

This feature can be useful when eg. trying to detect non-printable
characters.
This commit is contained in:
Martin Lund 2016-05-17 16:08:19 +02:00
parent 0687d7ff7b
commit a8103b8983
3 changed files with 17 additions and 1 deletions
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2
man/tio.1
View file

@ -63,6 +63,8 @@ Display help.
In session, the following key sequences are intercepted as tio commands: In session, the following key sequences are intercepted as tio commands:
.IP "\fBctrl-t q" .IP "\fBctrl-t q"
Quit Quit
.IP "\fBctrl-t s"
Show session statistics (total number of bytes transmitted/received)
.IP "\fBctrl-t t" .IP "\fBctrl-t t"
Send ctrl-t key code Send ctrl-t key code

3
src/include/tio/tty.h
View file

@ -22,9 +22,10 @@
#ifndef TTY_H #ifndef TTY_H
#define TTY_H #define TTY_H
#define KEY_CTRL_T 0x14
#define KEY_Q 0x71 #define KEY_Q 0x71
#define KEY_S 0x73
#define KEY_T 0x74 #define KEY_T 0x74
#define KEY_CTRL_T 0x14
void configure_stdout(void); void configure_stdout(void);
void restore_stdout(void); void restore_stdout(void);

13
src/tty.c
View file

@ -40,6 +40,7 @@
#include "tio/error.h" #include "tio/error.h"
static struct termios new_stdout, old_stdout, old_tio; static struct termios new_stdout, old_stdout, old_tio;
static long rx_total = 0, tx_total = 0;
static bool connected = false; static bool connected = false;
static bool tainted = false; static bool tainted = false;
static int fd; static int fd;
@ -244,6 +245,9 @@ int connect_tty(void)
/* Input from tty device ready */ /* Input from tty device ready */
if (read(fd, &input_char, 1) > 0) if (read(fd, &input_char, 1) > 0)
{ {
/* Update receive statistics */
rx_total++;
/* Print received tty character to stdout */ /* Print received tty character to stdout */
putchar(input_char); putchar(input_char);
fflush(stdout); fflush(stdout);
@ -253,6 +257,7 @@ int connect_tty(void)
log_write(input_char); log_write(input_char);
tainted = true; tainted = true;
} else } else
{ {
/* Error reading - device is likely unplugged */ /* Error reading - device is likely unplugged */
@ -289,6 +294,11 @@ int connect_tty(void)
/* Send ctrl-t key code upon ctrl-t t sequence */ /* Send ctrl-t key code upon ctrl-t t sequence */
output_char = KEY_CTRL_T; output_char = KEY_CTRL_T;
break; break;
case KEY_S:
/* Show tx/rx statistics upon ctrl-t s sequence */
color_printf("[tio %s] Sent %ld bytes, received %ld bytes", current_time(), tx_total, rx_total);
forward = false;
break;
default: default:
/* Ignore unknown ctrl-t escaped keys */ /* Ignore unknown ctrl-t escaped keys */
forward = false; forward = false;
@ -306,6 +316,9 @@ int connect_tty(void)
/* Write to log */ /* Write to log */
if (option.log) if (option.log)
log_write(output_char); log_write(output_char);
/* Update transmit statistics */
tx_total++;
} }
/* Save previous key */ /* Save previous key */