RE: UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

RE: UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

[Williams, Gerald S (Jerry)]

Huw wrote:
> The first issue was an omission of #defines.  IPv6 isn't a
> necessity for the UNP source, I believe.

I'd say the real issue is a failure to protect the use of
AF_INET6. You'll notice that it's protected by an #ifdef
earlier.

> The next issue I have is:
> 
> mcast_leave.c: In function `mcast_leave_source_group':
> mcast_leave.c:78: error: storage size of 'mreq' isn't known

I don't know anything about the ip_mreq_source structure,
but it looks to me like the current version may be having
general issues with support for various platforms and
configurations.

Have you tried using the version at www.kohala.com (i.e.,
unpv12e)? That was the the last one that Richard Stevens
wrote. At least the "lib" directory seems to build OK for
me. Even if you really want the latest library, looking
at the older code may help you with the port.

I haven't looked into the new version of that book, but
the new authors certainly had big shoes to fill.

gsw

P.S. www.kohala.com seemed to have intermittent access
problems (at least for me), so be patient.

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Re: UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

[mwoehlke]

Williams, Gerald S (Jerry) wrote:
> Huw wrote:
>> The next issue I have is:
>>
>> mcast_leave.c: In function `mcast_leave_source_group':
>> mcast_leave.c:78: error: storage size of 'mreq' isn't known
> 
> I don't know anything about the ip_mreq_source structure,
> but it looks to me like the current version may be having
> general issues with support for various platforms and
> configurations.

Right. One of our products was defining it for the longest time, and 
suddenly it started breaking on Linux, so it seems like it's very spotty 
whether or not the OS will define this structure. RHEL3 doesn't seem to 
have it, but FC4 does. So does Solaris 10 (x86, anyway), but not Solaris 
9 (sparc). My copy of Cygwin seems to have it, but only in 
<w32api/ws2tcpip.h>.

-- 
Matthew
Who let the hippos out?


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Re: UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

[huw]

Thanks, Brian.

The first issue was an omission of #defines.  IPv6 isn't a necessity for the 
UNP source, I believe.

The next issue I have is:

mcast_leave.c: In function `mcast_leave_source_group':
mcast_leave.c:78: error: storage size of 'mreq' isn't known

76: #ifdef IP_DROP_SOURCE_MEMBERSHIP
77:        case AF_INET: {
78:                struct ip_mreq_source   mreq;

Which I believe is telling me that struct ip_mreq_source isn't defined.
Is this struct to do with IPv6 and how would I know that?

When I google for ip_mreq_source, I'm led to believe that it's defined in 
net/udp.h  (which I infer corrleates to usr/include/netinet/udp.h).

Thanks,
Huw


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Re: UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

[Brian Dessent]

huw@huwdlloyd.com wrote:

> get_ifi_info.c: In function `get_ifi_info':
> get_ifi_info.c:143: error: `AF_INET6' undeclared (first use in this function)
> get_ifi_info.c:143: error: (Each undeclared identifier is reported only once
> get_ifi_info.c:143: error: for each function it appears in.)
> get_ifi_info.c:145: error: invalid application of `sizeof' to incomplete type
> `sockaddr_in6'

Cygwin does not support IPv6.

Brian

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UNIX Network Programming (unpve13e) make failing (AF_INET6 undeclared).

[huw]

Hello,

I've failed to find an appropriate archived mail for this problem.

I'm trying to build the UNIX Network Programming source on a newly, complete, 
download of cygwin.

My assumption is that this should work out of the box.  Any pointers?

-- Huw

After:

./configure
./cd libs
make

I get:

gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o connect_nonb.o connect_nonb.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o connect_timeo.o connect_timeo.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o daemon_inetd.o daemon_inetd.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o daemon_init.o daemon_init.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o dg_cli.o dg_cli.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o dg_echo.o dg_echo.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o error.o error.c
gcc -I../lib -g -O2 -D_REENTRANT -Wall   -c -o get_ifi_info.o get_ifi_info.c
get_ifi_info.c: In function `get_ifi_info':
get_ifi_info.c:143: error: `AF_INET6' undeclared (first use in this function)
get_ifi_info.c:143: error: (Each undeclared identifier is reported only once
get_ifi_info.c:143: error: for each function it appears in.)
get_ifi_info.c:145: error: invalid application of `sizeof' to incomplete type 
`s
ockaddr_in6'
get_ifi_info.c:146: error: invalid application of `sizeof' to incomplete type 
`s
ockaddr_in6'
make: *** [get_ifi_info.o] Error 1



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