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curl/docs/cmdline-opts/connect-timeout.d

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+Long: connect-timeout
+Arg: <seconds>
+Help: Maximum time allowed for connection
+See-also: max-time
+Category: connection
+---
+Maximum time in seconds that you allow curl's connection to take.  This only
+limits the connection phase, so if curl connects within the given period it
+will continue - if not it will exit.  Since version 7.32.0, this option
+accepts decimal values.
+
+If this option is used several times, the last one will be used.