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https://issues.apache.org/jira/browse/THRIFT-4187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15991934#comment-15991934
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Allen George commented on THRIFT-4187:
--------------------------------------

So, AFAICT, this happens because the Dart client can't handle framed writes 
that come in two pieces.

The Rust server is doing the following:

# Write the header bytes (i.e. message length)
# Write the body

In this situation it seems like the dart client can't read a complete frame. 
Changing the rust server to do the write in one piece (i.e. header and body at 
the same time) seems to avoid the failure.

> Dart -> Rust Framed cross tests fail
> ------------------------------------
>
>                 Key: THRIFT-4187
>                 URL: https://issues.apache.org/jira/browse/THRIFT-4187
>             Project: Thrift
>          Issue Type: Bug
>          Components: Rust - Library
>            Reporter: Allen George
>            Assignee: Allen George
>            Priority: Minor
>
> For some reason the Dart (client) -> Rust (server) framed-transport cross 
> tests fail. Initial investigation shows that *somehow* the dart client think 
> the socket was closed, which means it doesn't read the message from the 
> underlying transport.



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