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The cURL project
Network and protocols
Install curl
Source code
Build curl
Command line basics
Using curl
Verbose
Version
Persistent connections
Downloads
Uploads
Transfer controls
Stop slow transfers
Rate limiting
Request rate limiting
Connections
Timeouts
.netrc
Proxies
Exit status
SCP and SFTP
Reading email
Sending email
MQTT
TFTP
TELNET
DICT
TLS
Copy as curl
HTTP with curl
FTP with curl
Using libcurl
HTTP with libcurl
Bindings
libcurl internals
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Stop slow transfers
Having a fixed maximum time for a curl operation can be cumbersome, especially if you, for example, do scripted transfers and the file sizes and transfer times vary a lot. A fixed timeout value then needs to be set unnecessarily high to cover for worst cases.
As an alternative to a fixed time-out, you can tell curl to abandon the transfer if it gets below a certain speed and stays below that threshold for a specific period of time.
For example, if a transfer speed goes below 1000 bytes per second during 15 seconds, stop it:
curl --speed-time 15 --speed-limit 1000 https://example.com/
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