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Broadcast #241

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Broadcast #241

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96f40f0
Set SO_BROADCAST
Jul 2, 2026
ad4f16b
Test yes changes
Jul 2, 2026
2e8ce05
Fix SO_BROADCAST
Jul 2, 2026
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14 changes: 11 additions & 3 deletions src/shared/net/netraw.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -93,9 +93,9 @@ bool UDP::open(int port, bool share_port_for_multicasting, bool multicast_includ
if(flags < 0) flags = 0;
fcntl(fd, F_SETFL, flags | (blocking ? 0 : O_NONBLOCK));

int yes = 1;
if (share_port_for_multicasting) {
int reuse=1;
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&reuse,sizeof(reuse))!=0) {
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&yes, sizeof(yes))!=0) {
fprintf(stderr,"ERROR WHEN SETTING SO_REUSEADDR ON UDP SOCKET\n");
fflush(stderr);
}
Expand All @@ -106,8 +106,8 @@ bool UDP::open(int port, bool share_port_for_multicasting, bool multicast_includ
}

if (multicast_include_localhost) {
int yes = 1;
// allow packets to be received on this host
yes = 1;
if (setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, (const char*)&yes, sizeof(yes))!=0) {
fprintf(stderr,"ERROR WHEN SETTING IP_MULTICAST_LOOP ON UDP SOCKET\n");
fflush(stderr);
Expand All @@ -121,6 +121,14 @@ bool UDP::open(int port, bool share_port_for_multicasting, bool multicast_includ
return false;
}

yes = 1;
ret = setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &yes, sizeof(yes));
if(ret != 0)
{
printf("ERROR %d WHEN SETTING SO_BROADCAST\n", ret);
return false;
}

// bind socket to port if nonzero
if(port != 0){
sockaddr_in sockname;
Expand Down