the 2 most common cause for sendto() failure on raw sockets are:
- badly initialized IP header. note that ip_len and ip_off must be in
host byte order. all other fields must be in net byte order.
- badly initialized destination address.
writing a raw socket server is not much different than other socket
servers:
s = socket(AF_INET, SOCK_RAW, 0);
if (bind(s, ...) != 0)
errx(...)
while (1)
recvfrom(s, ...)
/* recv buffer contains a packet starting with IP header */
sourav das wrote:
hello all,
i m a new comer. i wrote a raw socket client
using setsockopt (sock, IPPROTO_IP. IPHDRINCL, ....)using UDP. ihave followed
MS_Press network programming . it is showing 19 bytes sent successfully. when
trying to send more than 19 bytes using sendto(sock, ...) function , it is
showing socket error on sending. i want to know how to write a raw socket server
program so that to catch and display the data sent by the client.
thanks a lot,
keep fit,
regards,
spike.
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