1*6236dae4SAndroid Build Coastguard Worker--- 2*6236dae4SAndroid Build Coastguard Workerc: Copyright (C) Daniel Stenberg, <[email protected]>, et al. 3*6236dae4SAndroid Build Coastguard WorkerSPDX-License-Identifier: curl 4*6236dae4SAndroid Build Coastguard WorkerLong: hsts 5*6236dae4SAndroid Build Coastguard WorkerArg: <filename> 6*6236dae4SAndroid Build Coastguard WorkerProtocols: HTTPS 7*6236dae4SAndroid Build Coastguard WorkerHelp: Enable HSTS with this cache file 8*6236dae4SAndroid Build Coastguard WorkerAdded: 7.74.0 9*6236dae4SAndroid Build Coastguard WorkerCategory: http 10*6236dae4SAndroid Build Coastguard WorkerMulti: append 11*6236dae4SAndroid Build Coastguard WorkerSee-also: 12*6236dae4SAndroid Build Coastguard Worker - proto 13*6236dae4SAndroid Build Coastguard WorkerExample: 14*6236dae4SAndroid Build Coastguard Worker - --hsts cache.txt $URL 15*6236dae4SAndroid Build Coastguard Worker--- 16*6236dae4SAndroid Build Coastguard Worker 17*6236dae4SAndroid Build Coastguard Worker# `--hsts` 18*6236dae4SAndroid Build Coastguard Worker 19*6236dae4SAndroid Build Coastguard WorkerEnable HSTS for the transfer. If the filename points to an existing HSTS cache 20*6236dae4SAndroid Build Coastguard Workerfile, that is used. After a completed transfer, the cache is saved to the 21*6236dae4SAndroid Build Coastguard Workerfilename again if it has been modified. 22*6236dae4SAndroid Build Coastguard Worker 23*6236dae4SAndroid Build Coastguard WorkerIf curl is told to use HTTP:// for a transfer involving a hostname that exists 24*6236dae4SAndroid Build Coastguard Workerin the HSTS cache, it upgrades the transfer to use HTTPS. Each HSTS cache 25*6236dae4SAndroid Build Coastguard Workerentry has an individual life time after which the upgrade is no longer 26*6236dae4SAndroid Build Coastguard Workerperformed. 27*6236dae4SAndroid Build Coastguard Worker 28*6236dae4SAndroid Build Coastguard WorkerSpecify a "" filename (zero length) to avoid loading/saving and make curl just 29*6236dae4SAndroid Build Coastguard Workerhandle HSTS in memory. 30*6236dae4SAndroid Build Coastguard Worker 31*6236dae4SAndroid Build Coastguard WorkerIf this option is used several times, curl loads contents from all the 32*6236dae4SAndroid Build Coastguard Workerfiles but the last one is used for saving. 33