Y-modem is not compatible with existed implementations (e.g. Windows HyperTerm).

• 回報者: mlukoshkov
• 負責人: (無)
• 類型: 問題回報
• 狀態: 關閉
• 元件: Tera Term
• 里程碑: Tera Term 4.86 (closed)
• 優先權: 5 - 中
• 嚴重程度: 5 - 中
• 處理結果: 無
• 檔案: 4

細節 回覆

Hi,

I tried to use TeraTerm to send files via y-modem protocol.

Unfortunately, it was not working.
I have checked the code and found several issues:
1) First packet size with filename, timestamp, etc. should be 128 bytes, not 1024.
2) The same for the last zero-filled packet.
3) Unnecessary read loop in YSendPacket should be removed as sometimes it prevents successful file upload.

I have attached a patch which fixes all described problems and cleanup YSendPacket a little.

Thanks,
Max

Ticket History (3/9 Histories)

2014-11-21 00:00 Updated by: mlukoshkov

• New Ticket "Z-modem is not compatible with existed implementations (e.g. Windows HyperTerm)." created

2014-11-21 00:05 Updated by: mlukoshkov

• File ymodem.diff (File ID: 5158) is attached

2014-11-21 00:09 Updated by: mlukoshkov

• Details Updated
• Summary Updated

2014-11-22 10:58 Updated by: (del#1144)

• File ymodem.c (File ID: 5159) is attached

2014-11-24 00:11 Updated by: (del#1144)

• File ymodem.c (File ID: 5160) is attached

2014-11-25 23:25 Updated by: (del#1144)

• 里程碑 Update from Tera Term 4.85 (closed) to Tera Term 4.86 (closed)

評語 回覆

Release process of Tera Term 4.85 is now in progress. Code is frozen now.

We are verifying patch.

2014-12-02 16:01 Updated by: (del#1144)

• File ymodem.patch (File ID: 5163) is attached

2015-02-02 13:05 Updated by: (del#1144)

• Ticket Close date is changed to 2015-02-02 13:05
• 狀態 Update from 開啟 to 關閉

評語 回覆

Hi,

We discussed about your patch and included some part of your patch.

https://sourceforge.jp/projects/ttssh2/scm/svn/commits/5771

following parts of patch was not applied:

1. block0 of file information does not 128 byte at all time. If file name is long, Tera Term sends STX packet (1024bytes)

2. deleted zero fill of OutPkt for resend packet.

2015-02-02 13:10 Updated by: (del#1144)

評語 回覆

fixed archive is here.

http://ttssh2.sourceforge.jp/snapshot/snapshot-20150202.zip