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Handle IPv6-only servers

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This commit is contained in:
Cameron Gutman
2019-07-14 22:55:41 -07:00
parent 8337b3e708
commit 8f4b8da3ce
2 changed files with 21 additions and 15 deletions
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29
Limelight/Network/MDNSManager.m
View File

@@ -175,6 +175,21 @@ static NSString* NV_SERVICE_TYPE = @"_nvstream._tcp";
continue;
}
// Since we discovered this host over IPv4 mDNS, we know we're on the same network
// as the PC and we can use our current WAN address as a likely candidate
// for our PC's external address.
struct in_addr wanAddr;
int err = LiFindExternalAddressIP4("stun.moonlight-stream.org", 3478, &wanAddr.s_addr);
if (err == 0) {
char addrStr[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &wanAddr, addrStr, sizeof(addrStr));
host.externalAddress = [NSString stringWithFormat: @"%s", addrStr];
Log(LOG_I, @"External IPv4 address (STUN): %@ -> %@", [service hostName], host.externalAddress);
}
else {
Log(LOG_E, @"STUN failed to get WAN address: %d", err);
}
host.localAddress = [MDNSManager sockAddrToString:addrData];
Log(LOG_I, @"Local address chosen: %@ -> %@", [service hostName], host.localAddress);
break;
@@ -194,20 +209,6 @@ static NSString* NV_SERVICE_TYPE = @"_nvstream._tcp";
host.ipv6Address = [MDNSManager getBestIpv6Address:addresses];
Log(LOG_I, @"IPv6 address chosen: %@ -> %@", [service hostName], host.ipv6Address);
// Since we discovered this host over mDNS, we know we're on the same network
// as the PC and we can use our current WAN address as a likely candidate
// for our PC's external address.
struct in_addr wanAddr;
int err = LiFindExternalAddressIP4("stun.moonlight-stream.org", 3478, &wanAddr.s_addr);
if (err == 0) {
char addrStr[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &wanAddr, addrStr, sizeof(addrStr));
host.externalAddress = [NSString stringWithFormat: @"%s", addrStr];
}
else {
Log(LOG_E, @"STUN failed to get WAN address: %d", err);
}
host.activeAddress = host.localAddress;
host.name = service.hostName;
[self.callback updateHost:host];

7
Limelight/Network/ServerInfoResponse.m
View File

@@ -19,11 +19,16 @@
- (void) populateHost:(TemporaryHost*)host {
host.name = [[self getStringTag:TAG_HOSTNAME] trim];
host.localAddress = [[self getStringTag:TAG_LOCAL_IP] trim];
host.uuid = [[self getStringTag:TAG_UNIQUE_ID] trim];
host.mac = [[self getStringTag:TAG_MAC_ADDRESS] trim];
host.currentGame = [[self getStringTag:TAG_CURRENT_GAME] trim];
// We might get an IPv4 loopback address if we're using GS IPv6 Forwarder
NSString *lanAddr = [[self getStringTag:TAG_LOCAL_IP] trim];
if (![lanAddr hasPrefix:@"127."]) {
host.localAddress = lanAddr;
}
// Modern GFE versions don't actually give us a WAN address anymore
// so we leave the one that we populated from mDNS discovery via STUN.
NSString *wanAddr = [[self getStringTag:TAG_EXTERNAL_IP] trim];