Fix socketcand erroneously discarding frames #1700
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The __receive_buffer is always truncated by [chars_processed_successfully + 1:]. When a partial socketcand frame is received, chars_processed_successfully is 0, and this results in 1 character being discarded. This will be the '<' character, and thus when the rest of the frame is received, it will be treated as a bad frame, and discarded.
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zariiii9003
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lumagi
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The __receive_buffer is always truncated by [chars_processed_successfully + 1:]. When a partial socketcand frame is received, chars_processed_successfully is 0, and this results in 1 character being discarded. This will be the '<' character, and thus when the rest of the frame is received, it will be treated as a bad frame, and discarded.
I double checked wireshark to make sure the bytestream wasn't corrupted, or there wasn't some weird latency related issue (which shouldn't make a difference anyways..). It was all good.
I also instrumented the code a bit to catch it in the act in the while loop progressively processing the
buffer_viewbuffer. Below is a log which shows it happening (scroll to the bottom):