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Internet-Hosting-Tool/mist/mist.cpp

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#define _CRT_RAND_S
#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#define WIN32_LEAN_AND_MEAN
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <Windows.h>
#include <WinSock2.h>
#include <Ws2tcpip.h>
#include <stdio.h>
#include <assert.h>
#include <shellapi.h>
#include <objbase.h>
#include "..\version.h"
#pragma comment(lib, "miniupnpc.lib")
#pragma comment(lib, "libnatpmp.lib")
#pragma comment(lib, "ws2_32.lib")
#pragma comment(lib, "iphlpapi.lib")
#define MINIUPNP_STATICLIB
#include <miniupnpc/miniupnpc.h>
#include <miniupnpc/upnpcommands.h>
#include <miniupnpc/upnperrors.h>
#define NATPMP_STATICLIB
#include <natpmp.h>
bool getExternalAddressPortIP4(int proto, unsigned short localPort, PSOCKADDR_IN wanAddr);
static struct port_entry {
int proto;
int port;
bool withServer;
} k_Ports[] = {
{IPPROTO_TCP, 47984, false},
{IPPROTO_TCP, 47989, false},
{IPPROTO_TCP, 48010, true},
{IPPROTO_UDP, 47998, true},
{IPPROTO_UDP, 47999, true},
{IPPROTO_UDP, 48000, true},
{IPPROTO_UDP, 48002, true},
{IPPROTO_UDP, 48010, true}
};
char logFilePath[MAX_PATH + 1];
enum MessagePriority {
MpInfo,
MpWarn,
MpError
};
void DisplayMessage(const char* message, MessagePriority priority = MpError, bool terminal = true)
{
printf("%s\n", message);
if (terminal) {
printf("--------------- MISS LOG -------------------\n");
char missPath[MAX_PATH + 1];
ExpandEnvironmentStringsA("%ProgramData%\\MISS\\miss-current.log", missPath, sizeof(missPath));
FILE* f = fopen(missPath, "r");
if (f != nullptr) {
char buffer[1024];
while (!feof(f)) {
int bytesRead = fread(buffer, 1, ARRAYSIZE(buffer), f);
fwrite(buffer, 1, bytesRead, stdout);
}
fclose(f);
}
else {
printf("Failed to find MISS log\n");
}
fflush(stdout);
}
DWORD flags = MB_OK | MB_TOPMOST | MB_SETFOREGROUND;
switch (priority) {
case MpInfo:
flags |= MB_ICONINFORMATION;
break;
case MpWarn:
flags |= MB_ICONWARNING;
break;
case MpError:
flags |= MB_ICONERROR;
break;
}
MessageBoxA(nullptr, message, "Moonlight Internet Streaming Tester", flags);
if (priority != MpInfo && terminal) {
flags = MB_YESNO | MB_TOPMOST | MB_SETFOREGROUND | MB_ICONINFORMATION;
switch (MessageBoxA(nullptr, "Would you like to view the troubleshooting log?",
"Moonlight Internet Streaming Tester", flags))
{
case IDYES:
// It's recommended to initialize COM before calling ShellExecute()
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
ShellExecuteA(nullptr, "open", logFilePath, nullptr, nullptr, SW_SHOWNORMAL);
break;
}
}
}
bool IsGameStreamEnabled()
{
DWORD error;
DWORD enabled;
DWORD len;
HKEY key;
error = RegOpenKeyExA(HKEY_LOCAL_MACHINE, "Software\\NVIDIA Corporation\\NvStream", 0, KEY_READ | KEY_WOW64_64KEY, &key);
if (error != ERROR_SUCCESS) {
printf("RegOpenKeyEx() failed: %d\n", error);
DisplayMessage("GeForce Experience was not detected on this PC. Make sure you're installing this utility on your GeForce GameStream-compatible PC, not the device running Moonlight.");
return false;
}
len = sizeof(enabled);
error = RegQueryValueExA(key, "EnableStreaming", nullptr, nullptr, (LPBYTE)&enabled, &len);
RegCloseKey(key);
if (error != ERROR_SUCCESS || !enabled) {
// GFE may not even write EnableStreaming until the user enables GameStream for the first time
if (error != ERROR_SUCCESS) {
printf("RegQueryValueExA() failed: %d\n", error);
}
DisplayMessage("GameStream is not enabled in GeForce Experience. Please open GeForce Experience settings, navigate to the Shield tab, and turn GameStream on.");
return false;
}
else {
printf("GeForce Experience installed and GameStream is enabled\n");
return true;
}
}
enum PortTestStatus {
PortTestOk,
PortTestError,
PortTestUnknown
};
PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withServer)
{
SOCKET clientSock = INVALID_SOCKET, serverSock = INVALID_SOCKET;
int err;
clientSock = socket(addr->ss_family, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
if (clientSock == INVALID_SOCKET) {
printf("socket() failed: %d\n", WSAGetLastError());
return PortTestError;
}
if (withServer) {
serverSock = socket(addr->ss_family, proto == IPPROTO_TCP ? SOCK_STREAM : SOCK_DGRAM, proto);
if (serverSock == INVALID_SOCKET) {
printf("socket() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
return PortTestError;
}
SOCKADDR_IN sin = {};
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
err = bind(serverSock, (struct sockaddr*)&sin, sizeof(sin));
if (err == SOCKET_ERROR) {
if (WSAGetLastError() == WSAEADDRINUSE) {
// If someone is already listening (perhaps GFE is currently streaming),
// we can proceed if it's a TCP connection.
if (proto == IPPROTO_TCP) {
closesocket(serverSock);
serverSock = INVALID_SOCKET;
}
else {
// We can't continue to test for UDP ports.
printf("Unknown (in use)\n");
closesocket(clientSock);
closesocket(serverSock);
return PortTestUnknown;
}
}
else {
printf("bind() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
closesocket(serverSock);
return PortTestError;
}
}
if (proto == IPPROTO_TCP && serverSock != INVALID_SOCKET) {
err = listen(serverSock, 1);
if (err == SOCKET_ERROR) {
printf("listen() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
closesocket(serverSock);
return PortTestError;
}
}
}
ULONG nbIo = 1;
err = ioctlsocket(clientSock, FIONBIO, &nbIo);
if (err == SOCKET_ERROR) {
printf("ioctlsocket() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
if (serverSock != INVALID_SOCKET) {
closesocket(serverSock);
}
return PortTestError;
}
SOCKADDR_IN6 sin6;
int addrLen = addr->ss_family == AF_INET ?
sizeof(SOCKADDR_IN) : sizeof(SOCKADDR_IN6);
RtlCopyMemory(&sin6, addr, addrLen);
sin6.sin6_port = htons(port);
if (proto == IPPROTO_TCP) {
err = connect(clientSock, (struct sockaddr*)&sin6, addrLen);
if (err == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) {
printf("connect() failed: %d\n", WSAGetLastError());
}
else {
struct timeval timeout = {};
fd_set fds;
FD_ZERO(&fds);
FD_SET(clientSock, &fds);
timeout.tv_sec = 3;
err = select(0, nullptr, &fds, nullptr, &timeout);
if (err == 1) {
// Our FD was signalled for connect() completion
printf("Success\n");
}
else if (err == 0) {
// Timed out
printf("Timeout\n");
}
else {
printf("select() failed: %d\n", WSAGetLastError());
}
}
closesocket(clientSock);
if (serverSock != INVALID_SOCKET) {
closesocket(serverSock);
}
return err == 1 ? PortTestOk : PortTestError;
}
else {
const char testMsg[] = "moonlight-test";
err = sendto(clientSock, testMsg, sizeof(testMsg), 0, (struct sockaddr*)&sin6, addrLen);
if (err == SOCKET_ERROR) {
printf("sendto() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
closesocket(serverSock);
return PortTestError;
}
struct timeval timeout = {};
fd_set fds;
FD_ZERO(&fds);
FD_SET(serverSock, &fds);
timeout.tv_sec = 3;
err = select(0, &fds, nullptr, nullptr, &timeout);
if (err == 1) {
// Our FD was signalled for data available
printf("Success\n");
}
else if (err == 0) {
// Timed out
printf("Timeout\n");
}
else {
printf("select() failed: %d\n", WSAGetLastError());
}
closesocket(clientSock);
closesocket(serverSock);
return err == 1 ? PortTestOk : PortTestError;
}
}
bool TestAllPorts(PSOCKADDR_STORAGE addr, char* portMsg, int portMsgLen)
{
bool ret = true;
for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
printf("Testing %s %d...",
k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
k_Ports[i].port);
PortTestStatus status = TestPort(addr, k_Ports[i].proto, k_Ports[i].port, k_Ports[i].withServer);
if (status != PortTestOk) {
// If we got an unknown result, assume it matches with whatever
// we've gotten so far.
if (status == PortTestError || !ret) {
int msgLen = snprintf(portMsg, portMsgLen, "%s %d\n",
k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
k_Ports[i].port);
portMsg += msgLen;
portMsgLen -= msgLen;
// Keep going to check all ports and report the failing ones
ret = false;
}
}
}
return ret;
}
bool FindLocalInterfaceIP4Address(PSOCKADDR_IN addr)
{
SOCKET s;
printf("Finding local IP address...");
s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s == INVALID_SOCKET) {
printf("socket() failed: %d\n", WSAGetLastError());
return false;
}
SOCKADDR_IN sin = {};
sin.sin_family = AF_INET;
sin.sin_port = htons(443);
sin.sin_addr.S_un.S_addr = inet_addr("8.8.8.8");
int err = connect(s, (struct sockaddr*)&sin, sizeof(sin));
if (err == SOCKET_ERROR) {
printf("connect() failed: %d\n", WSAGetLastError());
closesocket(s);
return false;
}
// Determine which local interface we bound to
int nameLen = sizeof(*addr);
err = getsockname(s, (struct sockaddr*)addr, &nameLen);
if (err == SOCKET_ERROR) {
printf("getsockname() failed: %d\n", WSAGetLastError());
closesocket(s);
return false;
}
char addrStr[64];
inet_ntop(AF_INET, &addr->sin_addr, addrStr, sizeof(addrStr));
printf("%s\n", addrStr);
return true;
}
enum UPnPPortStatus {
NOT_FOUND,
OK,
CONFLICTED,
ERRORED
};
UPnPPortStatus UPnPCheckPort(struct UPNPUrls* urls, struct IGDdatas* data, int proto, const char* myAddr, int port, char* conflictMessage)
{
char intClient[16];
char intPort[6];
char desc[80];
char enabled[4];
char leaseDuration[16];
const char* protoStr;
char portStr[6];
snprintf(portStr, sizeof(portStr), "%d", port);
switch (proto)
{
case IPPROTO_TCP:
protoStr = "TCP";
break;
case IPPROTO_UDP:
protoStr = "UDP";
break;
default:
assert(false);
return ERRORED;
}
printf("Checking for UPnP port mapping for %s %s -> %s...", protoStr, portStr, myAddr);
int err = UPNP_GetSpecificPortMappingEntry(
urls->controlURL, data->first.servicetype, portStr, protoStr, nullptr,
intClient, intPort, desc, enabled, leaseDuration);
if (err == 714) {
// NoSuchEntryInArray
printf("NOT FOUND\n");
return NOT_FOUND;
}
else if (err == UPNPCOMMAND_SUCCESS) {
if (!strcmp(myAddr, intClient)) {
printf("OK\n");
return OK;
}
else {
printf("CONFLICT - %s %s\n", desc, intClient);
snprintf(conflictMessage, 128, "%s (%s)", desc, intClient);
return CONFLICTED;
}
}
else {
printf("ERROR %d\n", err);
return ERRORED;
}
}
bool CheckWANAccess(PSOCKADDR_IN wanAddr, PSOCKADDR_IN reportedWanAddr, bool* foundPortForwardingRules, bool* igdDisconnected)
{
natpmp_t natpmp;
*foundPortForwardingRules = false;
*igdDisconnected = false;
bool gotReportedWanAddress = false;
int natPmpErr = initnatpmp(&natpmp, 0, 0);
if (natPmpErr != 0) {
printf("initnatpmp() failed: %d\n", natPmpErr);
}
else {
natPmpErr = sendpublicaddressrequest(&natpmp);
if (natPmpErr < 0) {
printf("sendpublicaddressrequest() failed: %d\n", natPmpErr);
closenatpmp(&natpmp);
}
}
{
int upnpErr;
struct UPNPDev* ipv4Devs = upnpDiscoverAll(5000, nullptr, nullptr, UPNP_LOCAL_PORT_ANY, 0, 2, &upnpErr);
struct UPNPUrls urls;
struct IGDdatas data;
char myAddr[128];
char wanAddrStr[128];
int ret = UPNP_GetValidIGD(ipv4Devs, &urls, &data, myAddr, sizeof(myAddr));
if (ret != 0) {
// Connected or disconnected IGD
if (ret == 1 || ret == 2) {
if (ret == 2) {
*igdDisconnected = true;
}
printf("Discovered UPnP IGD at: %s\n", urls.controlURL);
printf("Detecting WAN IP address via UPnP...");
ret = UPNP_GetExternalIPAddress(urls.controlURL, data.first.servicetype, wanAddrStr);
if (ret == UPNPCOMMAND_SUCCESS && strlen(wanAddrStr) > 0) {
reportedWanAddr->sin_addr.S_un.S_addr = wanAddr->sin_addr.S_un.S_addr = inet_addr(wanAddrStr);
printf("%s\n", wanAddrStr);
if (wanAddr->sin_addr.S_un.S_addr != 0) {
gotReportedWanAddress = true;
}
}
else {
printf("FAILED %d\n", ret);
}
char conflictMessage[512];
*foundPortForwardingRules = true;
for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {
char conflictEntry[128];
UPnPPortStatus status = UPnPCheckPort(&urls, &data, k_Ports[i].proto, myAddr, k_Ports[i].port, conflictEntry);
if (status != OK) {
*foundPortForwardingRules = false;
}
switch (status)
{
case CONFLICTED:
snprintf(conflictMessage, sizeof(conflictMessage),
"Detected a port forwarding conflict with another PC on your network: %s\n\n"
"Remove that PC from your network or uninstall the Moonlight Internet Streaming Service from it, then restart your router.",
conflictEntry);
DisplayMessage(conflictMessage);
return false;
default:
continue;
}
}
}
else {
printf("No UPnP IGD detected\n");
}
FreeUPNPUrls(&urls);
}
else {
printf("No UPnP devices detected\n");
}
}
// Use the delay of upnpDiscoverAll() to also allow the NAT-PMP endpoint time to respond
if (natPmpErr >= 0) {
printf("Detecting WAN IP address via NAT-PMP...");
natpmpresp_t response;
natPmpErr = readnatpmpresponseorretry(&natpmp, &response);
closenatpmp(&natpmp);
if (natPmpErr == 0) {
char addrStr[64];
reportedWanAddr->sin_addr = wanAddr->sin_addr = response.pnu.publicaddress.addr;
inet_ntop(AF_INET, &response.pnu.publicaddress.addr, addrStr, sizeof(addrStr));
printf("%s\n", addrStr);
if (wanAddr->sin_addr.S_un.S_addr != 0) {
gotReportedWanAddress = true;
}
}
else {
printf("FAILED %d\n", natPmpErr);
}
}
printf("Detecting WAN IP address via STUN...");
if (!getExternalAddressPortIP4(IPPROTO_UDP, 0, wanAddr)) {
if (!gotReportedWanAddress) {
DisplayMessage("Unable to determine your public IP address. Please check your Internet connection.");
return false;
}
}
else {
char addrStr[64];
inet_ntop(AF_INET, &wanAddr->sin_addr, addrStr, sizeof(addrStr));
printf("%s\n", addrStr);
if (!gotReportedWanAddress) {
// If we didn't get anything from UPnP or NAT-PMP, just populate the reported
// address with what we got from STUN
*reportedWanAddr = *wanAddr;
}
}
return true;
}
bool IsPossibleCGN(PSOCKADDR_IN wanAddr)
{
DWORD addr = htonl(wanAddr->sin_addr.S_un.S_addr);
// 10.0.0.0/8 - ISPs used to use this
if ((addr & 0xFF000000) == 0x0A000000) {
return true;
}
// 100.64.0.0/10 - RFC6598 official CGN address
else if ((addr & 0xFFC0) == 0x64400000) {
return true;
}
return false;
}
bool IsDoubleNAT(PSOCKADDR_IN wanAddr)
{
DWORD addr = htonl(wanAddr->sin_addr.S_un.S_addr);
// 10.0.0.0/8
if ((addr & 0xFF000000) == 0x0A000000) {
return true;
}
// 172.16.0.0/12
else if ((addr & 0xFFF00000) == 0xAC100000) {
return true;
}
// 192.168.0.0/16
else if ((addr & 0xFFFF0000) == 0xC0A80000) {
return true;
}
return false;
}
int main(int argc, char* argv[])
{
WSADATA wsaData;
char tempPath[MAX_PATH + 1];
GetTempPathA(sizeof(tempPath), tempPath);
snprintf(logFilePath, sizeof(logFilePath), "%s\\%s", tempPath, "mis-test.log");
freopen(logFilePath, "w", stdout);
// Print a log header
printf("Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n");
// Print a console header
fprintf(stderr, "Moonlight Internet Streaming Tester v" VER_VERSION_STR "\n\n");
int err = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (err != NO_ERROR) {
DisplayMessage("Unable to initialize WinSock");
return err;
}
fprintf(stderr, "Checking if GameStream is enabled...\n");
// First check if GameStream is enabled
if (!IsGameStreamEnabled()) {
return -1;
}
union {
SOCKADDR_STORAGE ss;
SOCKADDR_IN sin;
SOCKADDR_IN6 sin6;
};
char msgBuf[2048];
char portMsgBuf[512];
fprintf(stderr, "Testing local GameStream connectivity...\n");
// Try to connect via IPv4 loopback
ss = {};
sin.sin_family = AF_INET;
sin.sin_addr = in4addr_loopback;
printf("Testing GameStream ports via loopback\n");
if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
snprintf(msgBuf, sizeof(msgBuf),
"Local GameStream connectivity check failed. Please try reinstalling GeForce Experience.\n\nThe following ports were not working:\n%s",
portMsgBuf);
DisplayMessage(msgBuf);
return -1;
}
if (!FindLocalInterfaceIP4Address(&sin)) {
DisplayMessage("Unable to perform GameStream connectivity check. Please check your Internet connection and try again.");
return -1;
}
fprintf(stderr, "Testing network GameStream connectivity...\n");
// Try to connect via LAN IPv4 address
printf("Testing GameStream ports via local network\n");
if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
snprintf(msgBuf, sizeof(msgBuf),
"Local network GameStream connectivity check failed. Try temporarily disabling your firewall software or adding firewall exceptions for the following ports:\n%s",
portMsgBuf);
DisplayMessage(msgBuf);
return -1;
}
fprintf(stderr, "Detecting public IP address...\n");
bool upnpRulesFound, igdDisconnected;
SOCKADDR_IN locallyReportedWanAddr;
if (!CheckWANAccess(&sin, &locallyReportedWanAddr, &upnpRulesFound, &igdDisconnected)) {
return -1;
}
if (igdDisconnected) {
DisplayMessage("Your router reports to be disconnected from the Internet. Make sure UPnP is enabled in your router settings. "
"If this message persists, make sure your router isn't connected to the Internet through another router. If it is, switch one of the routers to bridge/AP mode.\n\n"
"Just in case this warning is due to a buggy router, the test will continue anyway.", MpWarn, false);
}
// Detect a double NAT by detecting STUN and and UPnP mismatches
if (sin.sin_addr.S_un.S_addr != locallyReportedWanAddr.sin_addr.S_un.S_addr) {
printf("Testing GameStream ports via UPnP/NAT-PMP reported WAN address\n");
// We don't actually care about the outcome here but it's nice to have in logs
// to determine whether solving the double NAT will actually make Moonlight work.
TestAllPorts((PSOCKADDR_STORAGE)&locallyReportedWanAddr, portMsgBuf, sizeof(portMsgBuf));
printf("Detected inconsistency between UPnP/NAT-PMP and STUN reported WAN addresses!\n");
}
fprintf(stderr, "Testing Internet GameStream connectivity...\n");
char wanAddrStr[64];
inet_ntop(AF_INET, &sin.sin_addr, wanAddrStr, sizeof(wanAddrStr));
// Try to connect via WAN IPv4 address
printf("Testing GameStream ports via STUN-reported WAN address\n");
if (!TestAllPorts(&ss, portMsgBuf, sizeof(portMsgBuf))) {
if (IsDoubleNAT(&locallyReportedWanAddr)) {
snprintf(msgBuf, sizeof(msgBuf), "Your router appears be connected to the Internet through another router. This configuration breaks port forwarding. To resolve this, switch one of the routers into bridge/AP mode.");
DisplayMessage(msgBuf);
}
else if (IsPossibleCGN(&locallyReportedWanAddr)) {
snprintf(msgBuf, sizeof(msgBuf), "Your ISP is running a Carrier-Grade NAT that is preventing you from hosting services like Moonlight on the Internet. Contact your ISP and ask for a dedicated public IP address.");
DisplayMessage(msgBuf);
}
else if (igdDisconnected) {
snprintf(msgBuf, sizeof(msgBuf), "Internet GameStream connectivity check failed. Make sure UPnP is enabled in your router settings and that you don't have two devices acting as routers connected together.");
DisplayMessage(msgBuf);
}
else if (upnpRulesFound) {
snprintf(msgBuf, sizeof(msgBuf), "We found the correct UPnP rules, but we couldn't confirm that they are working. You can try streaming from a different network by typing the following address into Moonlight's Add PC dialog: %s\n\n"
"If that doesn't work, check your router settings for any existing Moonlight port forwarding entries and delete them.", wanAddrStr);
DisplayMessage(msgBuf, MpWarn);
}
else {
snprintf(msgBuf, sizeof(msgBuf), "Internet GameStream connectivity check failed. Make sure UPnP is enabled in your router settings.\n\nThe following ports were not forwarded properly:\n%s", portMsgBuf);
DisplayMessage(msgBuf);
}
return -1;
}
snprintf(msgBuf, sizeof(msgBuf), "All tests passed! You should be able to stream by typing the following address into Moonlight's Add PC dialog: %s", wanAddrStr);
DisplayMessage(msgBuf, MpInfo);
return 0;
}
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