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Patch to use the next free port from 4444, not only 4444. #9

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Patch to use the next free port from 4444, not only 4444. #9

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30 changes: 27 additions & 3 deletions WebSocketAPIPlugin/WebSocketMain.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ extern "C" __declspec(dllexport) CTSTR GetPluginDescription();

HANDLE WebSocketThread;

const int port = 4444;
int port = 4444;
bool running;
WebSocketOBSTriggerHandler* triggerHandler = NULL;

Expand Down Expand Up @@ -223,6 +223,28 @@ struct libwebsocket_protocols protocols[] = {
}
};

int get_unique_port()
{
struct sockaddr_in serv_addr;

int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
fprintf(stderr, "ERROR opening socket");
return 4444;
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(port);

while (bind(sockfd, (struct sockaddr *) &serv_addr,
sizeof(serv_addr)) < 0)
port++;

unbind(sockfd, (struct sockaddr *) &serv_addr,
sizeof(serv_addr));
return port;
}



DWORD STDCALL MainWebSocketThread(LPVOID lpUnused)
Expand All @@ -232,6 +254,8 @@ DWORD STDCALL MainWebSocketThread(LPVOID lpUnused)
unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 1024 +
LWS_SEND_BUFFER_POST_PADDING];

port = get_unique_port();

context = libwebsocket_create_context(port, interface, protocols,
libwebsocket_internal_extensions,
NULL, NULL, NULL, -1, -1, 0, NULL);
Expand Down Expand Up @@ -326,5 +350,5 @@ CTSTR GetPluginName()

CTSTR GetPluginDescription()
{
return TEXT("An http/websocket interface enabling remote control through web clients. Accessible on port# 4444");
}
return TEXT("An http/websocket interface enabling remote control through web clients. Accessible on port# 4444+");
}