Hi Pavel !

It seems, you do it incorrectly :) dial(2) has an exact example if using
announce/listen/accept functions.

2014-10-10 11:48 GMT+04:00 Pavel Klinkovský <pavel.klinkovsky@gmail.com>:

> Hi all,
>
> I tried very simple program on native Plan9:
>
> #include <u.h>
> #include <libc.h>
>
> void
> main(int, char**)
> {
> int afd, lfd;
> char adir[NETPATHLEN], ldir[NETPATHLEN];
>
> afd = announce("tcp!*!20540", adir);
> if (afd < 0)
> sysfatal("listen: %r");
>
> lfd = listen(adir, ldir);
> if (lfd < 0)
> sysfatal("listen: %r");
>
> if (reject(lfd, ldir, "unauthorized") < 0)
> sysfatal("reject: %r");
>
> close(lfd);
> close(afd);
> exits(nil);
> }
>
> I dicovered that the funtion 'reject' fails:
> term% 8.out
> reject: unknown control request
>
> In 'ratrace' listing I can really see the 'reject' function failure:
> 348 8.out Open 33a7 0xdfffe9bc/"/net/cs" 0x2 = 3 "" 1412926762174586973
> 1412926762174841785
> 348 8.out Pwrite 5577 3  0x7880/"tcp!*!20540" 11 -1 = 11 ""
> 1412926762186976342 1412926762187086984
> 348 8.out Seek 3391 0x7ab8 3 0x0 0 = 0 "" 1412926762198637769
> 1412926762198646989
> 348 8.out Pread 557f 3 0xdfffe9bc 255 -1 0xdfffe9bc/"/net/tcp/clone.20540"
> 255 -1 = 20 "" 1412926762200546351 1412926762200619275
> 348 8.out Close 1225 3 = 0 "" 1412926762221784602 1412926762221865069
> 348 8.out Open 33a7 0xdfffebe0/"/net/tcp/clone" 0x2 = 3 ""
> 1412926762223717492 1412926762223849089
> 348 8.out Pread 557f 3 0xdfffede9 246 -1 0xdfffede9/"4" 246 -1 = 1 ""
> 1412926762235853725 1412926762235866298
> 348 8.out Pwrite 5577 3  0xdfffece0/"announce.20540" 14 -1 = 14 ""
> 1412926762247454802 1412926762247479948
> 348 8.out Open 33a7 0xdfffede0/"/net/tcp/4/listen" 0x2 = 4 ""
> 1412926762259028218 1412926771821372908
> 348 8.out Pread 557f 4 0xdfffede9 246 -1 0xdfffede9/"6" 246 -1 = 1 ""
> 1412926771844967723 1412926771844984487
> 348 8.out Pwrite 5577 4  0xdfffedec/"reject.6.unauthorized" 21 -1 = -1
> unknown control request 1412926771854330421 1412926771854347185
> 348 8.out Errstr 5587 0xdfffe914 128"" 128 = 0  1412926771871626615
> 1412926771871632483
> 348 8.out Errstr 5587 0xdfffe914 128"" 128 = 0 unknown control request
> 1412926771887234674 1412926771887239703
> 348 8.out Pwrite 5577 2  0xdfffe980/"reject:.unknown.control.request." 32
> -1reject: unknown control request
>  = 32 "" 1412926771918100040 1412926771932457957
> 348 8.out Open 33a7 0x7538/"#c/pid" 0x0 = 5 "" 1412926771947976329
> 1412926771948085295
> 348 8.out Pread 557f 5 0xdfffeaa0 20 -1 0xdfffeaa0/"........348." 20 -1 =
> 12 "" 1412926771963591547 1412926771963607473
> 348 8.out Close 1225 5 = 0 "" 1412926771979115786 1412926771979128359
> 348 8.out Exits 122d 0xdfffeadc/"reject: unknown control request"
>
> Do you have any explanation?
> Did I make some bug in the program?
>
> Thanks in advance.
>
> Pavel
>
>


-- 
С наилучшими пожеланиями
Жилкин Сергей
With best regards
Zhilkin Sergey