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Windows IPC fix, maybe?

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visionmercer 2026-06-23 12:22:51 +02:00
commit c2d86b6f46
1 changed files with 21 additions and 8 deletions
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15
terminkey.h
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@ -112,20 +112,33 @@ int ipc_check_message(uintptr_t buffer_ptr, int max_len) {
char* buffer = (char*)buffer_ptr; char* buffer = (char*)buffer_ptr;
DWORD bytesRead = 0; DWORD bytesRead = 0;
// Check if a client is connected (or already connected)
BOOL connected = ConnectNamedPipe(hServerPipe, NULL) ? BOOL connected = ConnectNamedPipe(hServerPipe, NULL) ?
TRUE : (GetLastError() == ERROR_PIPE_CONNECTED); TRUE : (GetLastError() == ERROR_PIPE_CONNECTED);
if (connected) { if (connected) {
DWORD bytesAvail = 0;
// Sneak peek to see if data has safely arrived in the buffer yet
if (PeekNamedPipe(hServerPipe, NULL, 0, NULL, &bytesAvail, NULL)) {
if (bytesAvail > 0) {
// Data is ready, perform the read safely
BOOL success = ReadFile(hServerPipe, buffer, max_len - 1, &bytesRead, NULL); BOOL success = ReadFile(hServerPipe, buffer, max_len - 1, &bytesRead, NULL);
if (success && bytesRead > 0) { if (success && bytesRead > 0) {
buffer[bytesRead] = '\0'; buffer[bytesRead] = '\0';
DisconnectNamedPipe(hServerPipe); DisconnectNamedPipe(hServerPipe);
ConnectNamedPipe(hServerPipe, NULL); ConnectNamedPipe(hServerPipe, NULL); // Re-arm for next connection
return (int)bytesRead; return (int)bytesRead;
} }
}
} else {
// If Peek fails because the client dropped out without sending anything
if (GetLastError() == ERROR_BROKEN_PIPE) {
DisconnectNamedPipe(hServerPipe); DisconnectNamedPipe(hServerPipe);
ConnectNamedPipe(hServerPipe, NULL); ConnectNamedPipe(hServerPipe, NULL);
} }
}
}
return 0; return 0;
} }