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Set the SO_REUSEADDR socket option of the listening socket #118

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Set the SO_REUSEADDR socket option of the listening socket #118

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11 changes: 11 additions & 0 deletions TPMCmd/Simulator/src/TcpServer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@ static int CreateSocket(
{
struct sockaddr_in MyAddress;
int res;
int optval = 1;
//
// Initialize Winsock
#ifdef _MSC_VER
Expand All @@ -58,6 +59,16 @@ static int CreateSocket(
WSAGetLastError());
return -1;
}

// Set the SO_REUSEADDR socket option to allow the socket to be reused and restarted quickly
// when the listening socket is in TIME_WAIT state, which happens often when debugging.
if(setsockopt(*ListenSocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&optval, sizeof(optval)) < 0)
{
printf("setsockopt SO_REUSEADDR failed. Error is 0x%x\n", WSAGetLastError());
closesocket(*ListenSocket);
return -1;
}

// bind the listening socket to the specified port
ZeroMemory(&MyAddress, sizeof(MyAddress));
MyAddress.sin_port = htons((unsigned short)PortNumber);
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