Warren 70353d2a55 Phase 4: Critical issue analysis - SSH packet size exceeds maxpack ...

- Issue: SSH_FXP_DATA packet size 32786 bytes exceeds client maxpack 32768
- Root cause: handle_read() returns full requested data without maxpack limit
- Severity: ⭐⭐⭐⭐⭐ Critical (blocks all large file transfers)

OpenSSH reference:
- sftp-server.c: process_read() limits data to maxpacket - 1024
- MarkBaseSSH: No maxpack limit currently

Solution (Recommended):
- Add maxpack field to SftpHandler structure
- Limit handle_read() data size to maxpack - 1024 bytes
- Get maxpack from Channel.remote_maxpacket

Estimated work: ~50 lines, ~30 minutes testing

2026-06-17 20:10:53 +08:00

..

batch_verify_final

Complete Phase 14.3: SFTP packet accumulation with comprehensive testing

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cache

feat: Improve PDF preview with fullscreen button

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complex_empty_test/level1

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_batch_test

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_delete_test

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_final_v4

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_nested_test/level1

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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scp_as_rsync

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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scp_batch_final

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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scp_empty_test

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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scp_test

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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users

Phase 1完成：双虚拟目录基础建设

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auth.sqlite

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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authorized_keys

Implement SSH Phase 9: Publickey authentication

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batch_1.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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existing_stat_test.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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init_auth_db.sql

Complete Phase 15: Window Control + sshbuf zero-copy + SCP support

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phase3_large_file_test_report.md

Phase 3: Large file test report - Critical issue discovered

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phase4_packet_size_issue_analysis.md

Phase 4: Critical issue analysis - SSH packet size exceeds maxpack

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rsync_1kb_final.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_1mb_openssh.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_1mb_phase14_2.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_1mb_retest.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_1mb_verify.bin

Implement Phase 14.3: SFTP packet accumulation (Critical fix)

2026-06-16 12:55:45 +08:00

rsync_10kb_test.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_100kb_final.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_compress_test.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_large_test.bin

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_perm_test.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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rsync_test.txt

Add comprehensive documentation and test records for Phase 15

2026-06-17 14:07:26 +08:00

scp_1mb_accumulation.bin

Implement Phase 14.3: SFTP packet accumulation (Critical fix)

2026-06-16 12:55:45 +08:00

scp_1mb_test.bin

Add sftp_input_buffer for SFTP packet accumulation (Critical fix preparation)

2026-06-16 12:49:40 +08:00

scp_2mb_final_fix.bin

Start Phase 14.4: SCP packet accumulation (Part 1)

2026-06-16 14:26:29 +08:00

scp_2mb_test.bin

Complete Phase 14.3: SFTP packet accumulation with comprehensive testing

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scp_5mb_test.bin

Complete Phase 14.3: SFTP packet accumulation with comprehensive testing

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scp_test.txt

Add comprehensive documentation and test records for Phase 15

2026-06-17 14:07:26 +08:00

sftp_test_result_report.md

Add SFTP upload debug test and result report

2026-06-17 18:18:19 +08:00

sftp_upload_debug_test.sh

Add SFTP upload debug test and result report

2026-06-17 18:18:19 +08:00

single_test.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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ssh_config.json

Implement SSH Phase 13.1: Enterprise-level security configuration

2026-06-15 16:56:38 +08:00

test_final_confirm.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_fsetstat_fix.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_scp_debug.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_scp_upload.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_single_scp.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_stat_correct.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_stat_final.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_stat.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_upload.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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test_verbose.txt

Implement Phase 14.2: OpenSSH unified poll mechanism with child process management

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