API LEVEL 21미만 SSL handshake aborted 문제(okhttp)
minsdk 17로 설정 후 작업 중 만난 에러
간략히 설명하면 okhttp의 버전 문제임
okhttp 3버전은 2.3이상 java 1.7이상을 타겟팅함. 헌데, tls 1.2를 지원하지 않음.
(tls = SSL 프로토콜 형모델로써 암호화 보안 프로토콜)
여러 해외 블로그들의 내용을 조합해 맞춤 설정함
okhttpclinet 주입 시 connectionspec 리스트를 주입
application에서 Security 설정
위에꺼, oncreate로 설정해야함(멀티덱스할때 깜빡하고 집어넣음)
retrofit version = 2.6.0
okhttp version = 3.+
좀 더 공부예정ㅇㅇㅇ
참고는 여기
https://developer.android.com/reference/javax/net/ssl/SSLEngine
SSLEngine | Android Developers
developer.android.com
How to fix Expected Android API level 21+ but was 19 in Android
In my application i want get data from server, for get connect to server i used Retrofit, OkHttp. But when running application, show me force close error. In android api 21+ is not error, but below...
stackoverflow.com
https://medium.com/square-corner-blog/okhttp-3-13-requires-android-5-818bb78d07ce
OkHttp 3.13 Requires Android 5+
Today we’re releasing OkHttp 3.13
medium.com
https://github.com/square/okhttp
GitHub - square/okhttp: Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
Square’s meticulous HTTP client for the JVM, Android, and GraalVM. - GitHub - square/okhttp: Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
github.com
https://square.github.io/okhttp/
OkHttp
OkHttp HTTP is the way modern applications network. It’s how we exchange data & media. Doing HTTP efficiently makes your stuff load faster and saves bandwidth. OkHttp is an HTTP client that’s efficient by default: HTTP/2 support allows all requests to
square.github.io
https://square.github.io/okhttp/4.x/okhttp/okhttp3/-connection-spec/
ConnectionSpec - OkHttp - OkHttp
okhttp / okhttp3 / ConnectionSpec ConnectionSpec class ConnectionSpec Specifies configuration for the socket connection that HTTP traffic travels through. For https: URLs, this includes the TLS version and cipher suites to use when negotiating a secure con
square.github.io