Help decoding multiple messages using rust by resolving #987#991
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mjpt777 merged 3 commits intoaeron-io:masterfrom Oct 25, 2024
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April 24, 2024 20:42
When decoding multiple messages from a single byte buffer, the second and following message decoder should offset to the new header offset plus header length.
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Thanks @wbprime, I think this looks good. Can someone apply this PR? |
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Closes #987
Say multiple messages were encoded into a continuous byte buffer. When trying to decode the first message, we might first use a
MessageHeaderDecoderto get its templateId at offset=0, then decode its body using correspoded message decoder at offset+=headerLength. This is ok for current message decoder'sheadermethod with an implicit header offset=0. But when trying to decoder the second and following messages, theMessageHeaderDecoderstep is ok however the body decoding step usingheadermethod would fetch bytes always from the first message body, thus is not expected.This unexpected result occurs only when using message decoder's
headermethod to gain ownership. Use message decoder'swrapmethod behaves as expected.This pr is just a simple workaround, simple but works (see tests/issue_987_test.rs).