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make sure reply packets go out the same interface they cam in on.

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This breaks win32 builds :/
This commit is contained in:
Bill Currie 2002-04-14 03:44:16 +00:00
parent 403af77038
commit 599e0f4b0a
1 changed files with 35 additions and 20 deletions
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55
qw/source/master.c
View file

@ -63,12 +63,6 @@ static const char rcsid[] =
#include "protocol.h"
#if 0
#define S2C_CHALLENGE 'c'
#define S2M_HEARTBEAT 'a'
#define S2M_SHUTDOWN 'C'
#endif
#define MASTER_TIMEOUT 300
#define SLIST_MULTIPLE 1
@ -177,10 +171,11 @@ QW_HeartShutdown (struct sockaddr_in *addr, server_t *servers,
}
void
QW_SendHearts (int sock, struct sockaddr_in *addr, server_t *servers,
QW_SendHearts (int sock, struct msghdr *msghdr, server_t *servers,
int serverlen)
{
unsigned char *out;
struct iovec iovec;
int count, cpos;
int i;
@ -212,19 +207,24 @@ QW_SendHearts (int sock, struct sockaddr_in *addr, server_t *servers,
++cpos;
}
}
sendto (sock, out, (count + 1) * 6, 0, (struct sockaddr *) addr,
sizeof (struct sockaddr_in));
iovec.iov_base = out;
iovec.iov_len = (count + 1) * 6;
msghdr->msg_iov = &iovec;
msghdr->msg_iovlen = 1;
sendmsg (sock, msghdr, 0);
free (out);
}
void
QW_Pong (int sock, struct sockaddr_in *addr)
QW_Pong (int sock, struct msghdr *msghdr)
{
// connectionless pa cket
char data[6] = {0xFF, 0xFF, 0xFF, 0xFF, A2A_ACK, 0};
printf ("Ping\n");
sendto (sock, data, sizeof (data), 0,
(struct sockaddr *) addr, sizeof (struct sockaddr_in));
struct iovec iovec = {data, sizeof (data)};
//printf ("Ping\n");
msghdr->msg_iov = &iovec;
msghdr->msg_iovlen = 1;
sendmsg (sock, msghdr, 0);
}
int serverlen = SLIST_MULTIPLE;
@ -234,6 +234,7 @@ void
QW_Master (struct sockaddr_in *addr)
{
int sock;
int ip_pktinfo = 1;
if (!servers) {
printf ("initial malloc failed\n");
@ -246,22 +247,36 @@ QW_Master (struct sockaddr_in *addr)
return;
}
if (setsockopt (sock, SOL_IP, IP_PKTINFO, &ip_pktinfo, sizeof (ip_pktinfo))
== -1) {
perror ("setsockopt");
return;
}
if (bind (sock, (struct sockaddr *) addr, sizeof (struct sockaddr_in))) {
printf ("bind failed\n");
return;
}
listen (sock, 4); // probably don't need this.
while (1) {
char buf[31];
struct iovec iovec = {buf, sizeof (buf) - 1};
struct sockaddr_in recvaddr;
int recvsize = sizeof (struct sockaddr_in);
char ancillary[CMSG_SPACE (sizeof (struct in_pktinfo))];
struct msghdr msghdr = {
&recvaddr,
sizeof (recvaddr),
&iovec,
1,
ancillary,
sizeof (ancillary),
0
};
int size;
buf[30] = '\0'; // a sentinal for string ops
size = recvfrom (sock, buf, sizeof (buf) - 1, 0,
(struct sockaddr *) &recvaddr, &recvsize);
size = recvmsg (sock, &msghdr, 0);
if (size == -1) {
printf ("recvfrom failed\n");
continue;
@ -291,7 +306,7 @@ QW_Master (struct sockaddr_in *addr)
QW_TimeoutHearts (servers, serverlen);
switch (buf[0]) {
case S2C_CHALLENGE:
QW_SendHearts (sock, &recvaddr, servers, serverlen);
QW_SendHearts (sock, &msghdr, servers, serverlen);
break;
case S2M_HEARTBEAT:
serverlen = QW_AddHeartbeat (&servers, serverlen,
@ -301,7 +316,7 @@ QW_Master (struct sockaddr_in *addr)
QW_HeartShutdown (&recvaddr, servers, serverlen);
break;
case A2A_PING:
QW_Pong (sock, &recvaddr);
QW_Pong (sock, &msghdr);
break;
default:
printf ("Unknown 0x%x\n", buf[0]);