Hi, this patch adds this option to nc(1):
-q timeout
after end-of-file on stdin, wait timeout seconds and then quit.
The default is no timeout.
This should be compatible with the -q option of the netcat-openbsd
package in debian (what the heck ?)
I use this to send simple udp datagrams:
echo 'Hello World!' |obj/nc -uq0 88.88.88.88 88
ok?
Christopher
Index: nc.1
===================================================================
RCS file: /cvs/src/usr.bin/nc/nc.1,v
retrieving revision 1.65
diff -u -p -r1.65 nc.1
--- nc.1 20 Aug 2013 21:05:20 -0000 1.65
+++ nc.1 5 Nov 2013 20:09:32 -0000
@@ -172,6 +172,11 @@ should use, subject to privilege restric
It is an error to use this option in conjunction with the
.Fl l
option.
+.It Fl q Ar timeout
+after end-of-file on stdin, wait
+.Ar timeout
+seconds and then quit.
+The default is no timeout.
.It Fl r
Specifies that source and/or destination ports should be chosen
randomly instead of sequentially within a range or in the order that
the system Index: netcat.c
===================================================================
RCS file: /cvs/src/usr.bin/nc/netcat.c,v
retrieving revision 1.117
diff -u -p -r1.117 netcat.c
--- netcat.c 26 Oct 2013 21:33:29 -0000 1.117
+++ netcat.c 5 Nov 2013 20:09:33 -0000
@@ -90,6 +90,7 @@ int Tflag =
-1; /* IP Type of Service int
rtableid = -1;
int timeout = -1;
+int fintime = -1;
int family = AF_UNSPEC;
char *portlist[PORT_MAX+1];
char *unix_dg_tmp_socket;
@@ -136,7 +137,7 @@ main(int argc, char *argv[])
rtableid = getrtable();
while ((ch = getopt(argc, argv,
- "46DdFhI:i:klNnO:P:p:rSs:tT:UuV:vw:X:x:z")) != -1) {
+ "46DdFhI:i:klNnO:P:p:q:rSs:tT:UuV:vw:X:x:z")) != -1) {
switch (ch) {
case '4':
family = AF_INET;
@@ -216,6 +217,12 @@ main(int argc, char *argv[])
errx(1, "timeout %s: %s", errstr,
optarg); timeout *= 1000;
break;
+ case 'q':
+ fintime = strtonum(optarg, 0, INT_MAX / 1000,
&errstr);
+ if (errstr)
+ errx(1, "timeout %s: %s", errstr,
optarg);
+ fintime *= 1000;
+ break;
case 'x':
xflag = 1;
if ((proxy = strdup(optarg)) == NULL)
@@ -782,6 +789,8 @@ readwrite(int nfd)
else if (n == 0) {
if (Nflag)
shutdown(nfd, SHUT_WR);
+ if (fintime >= 0)
+ timeout = fintime;
pfd[1].fd = -1;
pfd[1].events = 0;
} else {
@@ -1090,6 +1099,7 @@ help(void)
\t-O length TCP send buffer length\n\
\t-P proxyuser\tUsername for proxy authentication\n\
\t-p port\t Specify local port for remote connects\n\
+ \t-q secs\t Timeout for final net reads after EOF is
read on stdin\n\ \t-r Randomize remote ports\n\
\t-S Enable the TCP MD5 signature option\n\
\t-s addr\t Local source address\n\
@@ -1113,7 +1123,7 @@ usage(int ret)
fprintf(stderr,
"usage: nc [-46DdFhklNnrStUuvz] [-I length] [-i interval]
[-O length]\n" "\t [-P proxy_username] [-p source_port] [-s source]
[-T ToS]\n"
- "\t [-V rtable] [-w timeout] [-X proxy_protocol]\n"
+ "\t [-V rtable] [-w timeout] [-q timeout] [-X
proxy_protocol]\n" "\t [-x proxy_address[:port]] [destination]
[port]\n"); if (ret)
exit(1);
--
http://gmerlin.de
OpenPGP: http://gmerlin.de/christopher.pub
1917 680A 723C BF3D 2CA3 0E44 7E24 D19F 34B8 2A2A
signature.asc
Description: PGP signature
