Retrofit/Okhttp Https降级Http处理实践

OkHttpClient client = new OkHttpClient();

client.setHostnameVerifier(new HostnameVerifier() {   
 @Override
    public boolean verify(String s, SSLSession sslSession) {        
    return true;
    }
});
TrustManager[] trustAllCerts = new TrustManager[] { 
new X509TrustManager() {    
    @Override
    public void checkClientTrusted(
            java.security.cert.X509Certificate[] x509Certificates,
            String s) throws java.security.cert.CertificateException {
            
    }    
    @Override
    public void checkServerTrusted(
            java.security.cert.X509Certificate[] x509Certificates,
            String s) throws java.security.cert.CertificateException {
            
    }   
    @Override
    public java.security.cert.X509Certificate[] getAcceptedIssuers() {        
     return new java.security.cert.X509Certificate[] {};
    }
} 
};
 try {   
  //构造自己的SSLContext
    SSLContext sc = SSLContext.getInstance("TLS");
    sc.init(null, trustAllCerts, new java.security.SecureRandom());
    client.setSslSocketFactory(sc.getSocketFactory());
} catch (Exception e) {
    e.printStackTrace();
}

    client.protocols(Collections.singletonList(Protocol.HTTP_1_1))    
           .build();