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[PR #3506] Fix "bufio.Scanner token too long" error by replacing Scanner with Reader in SSE #10678

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opened 2026-02-16 18:15:24 -05:00 by yindo · 0 comments
yindo commented 2026-02-16 18:15:24 -05:00
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Original Pull Request: https://github.com/anomalyco/opencode/pull/3506

State: closed
Merged: No

Related issues:

Fix bufio.Scanner token too long error in SSE decoder

The SSE stream decoder was hitting a 32MB hard limit when processing large events,
causing bufio.Scanner: token too long errors. This blocked users from reading large
files through the TUI.

Changes:

• Replaced bufio.Scanner with bufio.Reader in
packages/sdk/go/packages/ssestream/ssestream.go
• Uses ReadBytes('\n') which grows dynamically without size limits
• Added documentation and test files

Testing: Verified with events up to 100MB. All tests pass.

**Original Pull Request:** https://github.com/anomalyco/opencode/pull/3506 **State:** closed **Merged:** No --- ## Related issues: - #3409 - #3502 ## Fix bufio.Scanner token too long error in SSE decoder The SSE stream decoder was hitting a 32MB hard limit when processing large events, causing bufio.Scanner: token too long errors. This blocked users from reading large files through the TUI. Changes: • Replaced bufio.Scanner with bufio.Reader in packages/sdk/go/packages/ssestream/ssestream.go • Uses ReadBytes('\n') which grows dynamically without size limits • Added documentation and test files Testing: Verified with events up to 100MB. All tests pass.
yindo added the pull-request label 2026-02-16 18:15:24 -05:00
yindo closed this issue 2026-02-16 18:15:24 -05:00
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Reference: anomalyco/opencode#10678
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