Host software to use esp_apptrace_fopen()?

[Hello1024]

If I run

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esp_apptrace_fopen(ESP_APPTRACE_DEST_TRAX, "apptrace.txt", "w");

, and write some data on the target, and

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esp apptrace start file://testing.txt

from the openocd console, the data I wrote doesn't end up in the file on the host.

In fact, the testing.txt file ends up with the content "\0apptrace.txt\0w\0". Looking at the /components/app_trace/host_file_io.c file of IDF, it appears there is some extra two-way protocol layered on top of apptrace to manipulate files. Is there a tool somewhere that implements this protocol on the host side?