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e9d177eae3
The current binfile export process uses a streaming technique. The major problem with the streaming approach is the case when an error happens on the middle of generation, because we have no way to notify the user about the error (because the response is already is sent and contents are streaming directly to the user client/browser). This commit replaces the streaming with temporal files and SSE encoded response for emit the export progress events; once the exportation is finished, a temporal uri to the exported artifact is emited to the user via "end" event and the frontend code will automatically trigger the download. Using the SSE approach removes possible transport timeouts on export large files by sending progress data over the open connection. This commit also removes obsolete code related to old binfile formats.