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Keep an offline Moonraker printer from freezing startup (#16668)

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Moonraker discovery asked the printer for its name before announcing
it, on the GUI thread, with a 5 s connect timeout. When the selected
printer was off, the window ignored input for 5 s after every launch
and the Home page stayed white.

The request never produced a name. It read machine_name or hostname
from /server/info, and Moonraker sends neither there. Discovery now
announces the preset model name without asking the printer.
This commit is contained in:
Kris Austin authored and GitHub committed 2026-10-19 16:21:59 -05:00
1 parent 0585836550
commit a2b1a2f3e7
2 files changed
+5 -12
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src/slic3r/Utils/MoonrakerPrinterAgent.cpp
+2 -10
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@@ -1415,16 +1415,8 @@ void MoonrakerPrinterAgent::announce_printhost_device()
}
}
// Try to fetch actual device name from Moonraker
// Priority: 1) Moonraker hostname, 2) Preset model name, 3) Generic fallback
std::string dev_name;
MoonrakerDeviceInfo info;
std::string fetch_error;
if (fetch_device_info(device_info.base_url, device_info.api_key, info, fetch_error) && !info.dev_name.empty()) {
dev_name = info.dev_name;
} else {
dev_name = device_info.model_name.empty() ? "Moonraker Printer" : device_info.model_name;
}
// Never asks the printer, since discovery runs on the GUI thread and an unreachable printer would freeze it
const std::string dev_name = device_info.model_name.empty() ? "Moonraker Printer" : device_info.model_name;
const std::string model_id = device_info.model_id;