Date: Wed, 6 Nov 2002 19:30:02 -0800 (PST) From: alireza mahini <alirezamahini@yahoo.com> To: questions@freebsd.org Subject: How can i use multiple ethernet card for data transfer in my program( in C language)? Message-ID: <20021107033002.47061.qmail@web40702.mail.yahoo.com>
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I have two ethernet card(NIC)im my computer .Their
characteristics are:
name:rl0
ip:128.128.64.235
netmask:255.255.0.0
broadcast:128.128.255.255
name:rl1
ip:128.128.65.235
netmask:255.255.0.0
broadcast:128.128.255.255
Both of them is up when i use ifconfig command.
I want develop a program that can use rl0 and rl1 for
data communication.My code is similar as flow:
main(){
...
for(i=0;i<3,i++){
sd[i]=socket(...);//create DGRAM sockets
if (sd[i]==-1) return -1;
}
bind(sd[0],...);//bind sd0 to ip address of rl0
bind(sd[1],...);//bind sd1 to ip address of rl0
bind(sd[2],...);//bind sd2 to ip address of rl1
bind(sd[3],...);//bind sd3 to ip address of rl1
sendto(sd[0],...);//send form rl0 to remout host1
sendto(sd[2],...);//send from rl1 to remout host2
recvfrom(sd[1],...);//receive in rl0
recvfrom(sd[3],...);//receive in rl1
return 1;
}
In the first time when i executed my program all data
sent form rl0 ,in other word packets of rl1 and
packets of rl0 were sent by rl0;
So i use the route command as flow:
#route add [remout host2]-interface rl1
In this case data of rl1 weren't sent by rl0 but
rl1 didn't send data too.
please guide me .Thanks.
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