HttpClient use curl, and curl need root CA install, to support HTTPS POST ( as well as GET) , The root CA is needed.I compile ca-certificates for get rid of "--no-check-certificate" at wget.
wget -O ca-certificates_20140325_ar71xx.ipk https://www.dropbox.com/s/rmvkunea1ifa9zn/ca-certificates_20140325_ar71xx.ipk?dl=0 --no-check-certificate
opkg updateopkg install openssl-utilopkg install ca-certificates_20140325_ar71xx.ipk
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