ref: 2b99422480d596ebc26921c87c6bb81a07949f3e
dir: /progs/netecho.c.ms/
.P1
.ps -1
.ti -1i
.B
.BX netecho.c
.ps +1
.CW
.ps -2
.vs .15i
#include <u.h>
#include <libc.h>
void
main(int argc, char* argv[])
{
int cfd, lfd, dfd;
long nr;
char adir[40];
char ldir[40];
char buf[1024];
cfd = announce("tcp!*!9988", adir);
if (cfd < 0)
sysfatal("announce: %r");
print("announced tcp!*!9988 in %s\en", adir);
.ps +2
.P2
.P1
.ps -2
.vs .15i
for(;;){
lfd = listen(adir, ldir);
if (lfd < 0)
sysfatal("listen: %r");
dfd = accept(lfd, ldir);
if (dfd < 0)
sysfatal("can't accept: %r");
close(lfd);
print("accepted call at %s\en", ldir);
for(;;){
nr = read(dfd, buf, sizeof buf);
if (nr <= 0)
break;
write(dfd, buf, nr);
}
print("terminated call at %s\en", ldir);
close(dfd);
}
}
.ps +2
.P2