Amazon Linux 2 服务器中的 curl 存在奇怪的问题。
退出代码为 18，读取仅剩约 1MB 字节，失败。因此，为了解决该问题，我设置了本地 SFTP 服务器。
所以我的 curl 命令是这样的：
curl -u testuser:12345 -o /tmp/testfile sftp://127.0.0.1/home/testuser/testfile
如果文件大小小于~120KB，则不会出现此问题。
以下更改均无帮助：
- 不使用
-o - 引用网址
- 使用
--insecure - 使用
localhost而不是127.0.0.1 -f在网址前使用
使用调试输出-vvv没有告诉我任何信息，
使用跟踪输出--trace没有告诉我任何信息，
tcpdump 数据是加密的，我无法知道发生了什么。
我希望可以共享所有输出。但我正在远程桌面上工作，无法传输任何文件。所以我无法共享任何东西。
发生什么了？
是的，如果我使用 sftp 会话并获取命令，那么它可以起作用。
curl 输出：
{ [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 服务器 debug3 日志：
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
我假设您已使用 127.0.0.1 作为真实地址的掩码，或者您正在进行一些转发。
你有没有尝试过：
curl -u 测试用户:12345 -o /tmp/testfile scp://127.0.0.1/home/testuser/testfile
与 sftp 不同，scp 被设计为在单个通道上工作，而且 scp 不需要在发送下一个数据包之前确认每个数据包。您可能会发现 scp 能够穿越您试图绕过的防火墙。