Why ExecuteRemoteCommand required ShellOutputReceiver to work well in specific jobs?

[syail]

I tried to copy file local to local command and copy into my PC.

Example)

_client.ExecuteRemoteCommand($"su -c 'cp /data/local/tmp/test /sdcard/test'", device);

PullFile(device, $"/sdcard/test", "test");

In the above code, if there is no ShellOutputReceiver, the copy does not seem to proceed, and I am curious as to why this is.

[syail]

I am guessing that the above problem is due to the code below.

AdvancedSharpAdbClient/AdvancedSharpAdbClient/AdbClient.cs

Line 389 in 77db1e9

if (receiver?.AddOutput(line) == false) { break; }

If anyone knows the exact cause, please let me know