Amazon Linux 2 伺服器中的curl 有奇怪的問題。
它失敗並顯示退出代碼 18，僅需要讀取約 1MB 位元組。為了解決這個問題，我設定了本機 SFTP 伺服器。
所以我的curl指令是這樣的：
curl -u testuser:12345 -o /tmp/testfile sftp://127.0.0.1/home/testuser/testfile
如果檔案大小小於 ~120KB，也不會出現此問題。
以下更改均無幫助：
- 不使用
-o - 引用網址
- 使用
--insecure - 使用
localhost而不是127.0.0.1 -f在 url 之前使用
使用調試輸出-vvv並沒有告訴我任何信息，
追蹤輸出使用--trace並沒有告訴我任何事情，
tcpdump 資料已加密，我無法判斷發生了什麼事。
我希望我可以分享所有輸出。但我正在遠端桌面上工作，無法傳輸任何文件。所以我無法分享任何東西。
發生什麼事了？
是的，如果我使用 sftp 會話並取得命令，那麼就可以了。
捲曲輸出:
{ [30000 bytes data]
* transfer closed with 277200 bytes remaining to read
35 420k 35 150k 0 0 1195k 0 --:--:-- --:--:-- --:--:-- 1201k
35 420k 35 150k 0 0 1179k 0 --:--:-- --:--:-- --:--:-- 1179k
* Closing connection
curl: (18) transfer closed with 277200 bytes remaining to read
sftp 伺服器 debug3 日誌：
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 0: realpath
Apr 03 21:31:30 my-host sftp-server[3159]: realpath "."
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 0: sent names count 1
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 1: open flags 1
Apr 03 21:31:30 my-host sftp-server[3159]: open "/home/testuser/testfile2" flags READ mode 0100644
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 1: sent handle handle 0
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 2: stat
Apr 03 21:31:30 my-host sftp-server[3159]: stat name "/home/testuser/testfile2"
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 2: sent attrib have 0xf
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 3: read "/home/testuser/testfile2" (handle 0) off 0 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 3: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 4: read "/home/testuser/testfile2" (handle 0) off 30000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 4: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 5: read "/home/testuser/testfile2" (handle 0) off 60000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 5: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 6: read "/home/testuser/testfile2" (handle 0) off 90000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 6: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 7: read "/home/testuser/testfile2" (handle 0) off 120000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 7: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 8: read "/home/testuser/testfile2" (handle 0) off 150000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 8: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 9: read "/home/testuser/testfile2" (handle 0) off 180000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 9: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 10: read "/home/testuser/testfile2" (handle 0) off 210000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 10: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 11: read "/home/testuser/testfile2" (handle 0) off 240000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 11: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 12: read "/home/testuser/testfile2" (handle 0) off 270000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 12: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 13: read "/home/testuser/testfile2" (handle 0) off 300000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 13: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 14: read "/home/testuser/testfile2" (handle 0) off 330000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 14: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 15: read "/home/testuser/testfile2" (handle 0) off 360000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 15: sent data len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 16: read "/home/testuser/testfile2" (handle 0) off 390000 len 19600
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 16: sent data len 19600
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 17: read "/home/testuser/testfile2" (handle 0) off 409600 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 17: sent data len 21400
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 18: read "/home/testuser/testfile2" (handle 0) off 431000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 18: sent status 1
Apr 03 21:31:30 my-host sftp-server[3159]: sent status End of file
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 19: read "/home/testuser/testfile2" (handle 0) off 461000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 19: sent status 1
Apr 03 21:31:30 my-host sftp-server[3159]: sent status End of file
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 20: read "/home/testuser/testfile2" (handle 0) off 491000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 20: sent status 1
Apr 03 21:31:30 my-host sftp-server[3159]: sent status End of file
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 21: read "/home/testuser/testfile2" (handle 0) off 521000 len 30000
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 21: sent status 1
Apr 03 21:31:30 my-host sftp-server[3159]: sent status End of file
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: request 22: read "/home/testuser/testfile2" (handle 0) off 551000 len 12400
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 22: sent status 1
Apr 03 21:31:30 my-host sftp-server[3159]: sent status End of file
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 23: close handle 0
Apr 03 21:31:30 my-host sftp-server[3159]: close "/home/testuser/testfile2" bytes read 431000 written 0
Apr 03 21:31:30 my-host sftp-server[3159]: debug3: request 23: sent status 0
Apr 03 21:31:30 my-host sftp-server[3159]: sent status Success
Apr 03 21:31:30 my-host sftp-server[3159]: debug1: read eof
Apr 03 21:31:30 my-host sftp-server[3159]: session closed for local user testuser from [127.0.0.1]
Apr 03 21:31:30 my-host sshd[3157]: Received disconnect from 127.0.0.1 port 47854:11: Shutdown
Apr 03 21:31:30 my-host sshd[3157]: Disconnected from 127.0.0.1 port 47854
Apr 03 21:31:30 my-host sshd[3154]: pam_unix(sshd:session): session closed for user testuser
{ [16384 bytes data]
100 420k 100 420k 0 0 4020k 0 --:--:-- --:--:-- --:--:-- 4047k
100 420k 100 420k 0 0 3953k 0 --:--:-- --:--:-- --:--:-- 3953k
* Connection #0 to host 127.0.0.1 left intact
答案1
我假設您已使用 127.0.0.1 作為真實位址的掩碼，或者您正在進行一些轉發。
你有沒有嘗試過：
curl -u testuser:12345 -o /tmp/testfile scp://127.0.0.1/home/testuser/testfile
與 sftp 不同，scp 被設計為在單一通道上工作，而且 scp 不需要在發送下一個包之前確認每個包。您可能會發現 scp 能夠穿越您試圖繞過的防火牆。