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fix(CrealityPrint): avoid false 'End of file' error when K1 closes the WS after start (#14344)

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K1C: corrige erro 'End of file' ao enviar impressao (start_print)

A K1-family fecha o WebSocket 9999 assim que aceita o comando de iniciar
impressao. O start_print fazia um ws.read() bloqueante logo apos o write, que
estourava 'End of file [asio.misc:2]' e era reportado como erro -- embora a
impressao ja tivesse iniciado (o comando e entregue no write). Torna o read e o
close best-effort (overloads com error_code), eliminando o falso erro. Mesmo
padrao ja usado em feed_filament; cobre os caminhos single-color e multicor.
This commit is contained in:
Sandmann
2026-06-24 08:13:45 +02:00
committed by SoftFever
parent 42392fa71e
commit b1e6c0a64c
1 changed files with 10 additions and 2 deletions
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12
src/slic3r/Utils/CrealityPrint.cpp
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@@ -414,11 +414,19 @@ bool CrealityPrint::start_print(wxString &msg, const std::string &filename, cons
};
ws.write(net::buffer(to_string(cmd)));
// K1-family firmware closes the WebSocket right after accepting the
// start command, so a blocking read here surfaces a benign
// "End of file [asio.misc:2]" even though the print already started
// (the command is delivered by write()). Read best-effort, ignore errors.
beast::flat_buffer buffer;
ws.read(buffer);
beast::error_code read_ec;
ws.read(buffer, read_ec);
}
ws.close(websocket::close_code::normal);
// Same reason: the printer may have already closed the connection. A close
// error here is not a failure — the start command was sent above.
beast::error_code close_ec;
ws.close(websocket::close_code::normal, close_ec);
return true;
} catch(std::exception const& e) {
BOOST_LOG_TRIVIAL(error) << "CrealityPrint: Error starting print: " << e.what();