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Test for MTU problems

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This commit is contained in:
Cameron Gutman 2020-10-10 12:39:48 -05:00
parent 3844ea59de
commit 8a45ea2066
1 changed files with 8 additions and 4 deletions
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12
mist/mist.cpp
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@ -407,7 +407,7 @@ enum PortTestStatus {
PortTestError,
PortTestUnknown
};
PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withServer, bool isLoopbackRelay)
PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withServer, bool isLoopbackRelay, bool mtuTest)
{
SOCKET clientSock = INVALID_SOCKET, serverSock = INVALID_SOCKET;
int err;
@ -532,11 +532,14 @@ PortTestStatus TestPort(PSOCKADDR_STORAGE addr, int proto, int port, bool withSe
return err == 1 ? PortTestOk : PortTestError;
}
else {
const char testMsg[] = "moonlight-test";
// Video packets are up to 1040 bytes.
const char testMsg[1040] = "moonlight-test";
// Send several test packets to ensure a random lost packet doesn't make the test fail
for (int i = 0; i < 5; i++) {
err = sendto(clientSock, testMsg, sizeof(testMsg), 0, (struct sockaddr*)&sin6, addrLen);
// Send the full payload for MTU tests and the truncated payload for other tests.
err = sendto(clientSock, testMsg,
mtuTest ? sizeof(testMsg) : strlen(testMsg), 0, (struct sockaddr*)&sin6, addrLen);
if (err == SOCKET_ERROR) {
fprintf(LOG_OUT, "sendto() failed: %d\n", WSAGetLastError());
closesocket(clientSock);
@ -698,7 +701,8 @@ bool TestAllPorts(PSOCKADDR_STORAGE addr, char* portMsg, int portMsgLen, bool is
fprintf(LOG_OUT, "Testing %s %d...",
k_Ports[i].proto == IPPROTO_TCP ? "TCP" : "UDP",
k_Ports[i].port);
status = TestPort(addr, k_Ports[i].proto, k_Ports[i].port, k_Ports[i].withServer, isLoopbackRelay);
status = TestPort(addr, k_Ports[i].proto, k_Ports[i].port,
k_Ports[i].withServer, isLoopbackRelay, k_Ports[i].port == 47998);
}
if (status != PortTestOk) {