SSL握手无法从Android客户端连接到Google

Question

I'm using the standard piece of code

URL url = new URL(sb.toString());
conn = (HttpsURLConnection) url.openConnection();
InputStreamReader in = new InputStreamReader(conn.getInputStream());

to connect to the Google Places API from an Android client. However I get this exception:

02-24 02:29:35.535: E/AdapterClass(3122):   at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:374)
02-24 02:29:35.535: E/AdapterClass(3122):   at com.android.okhttp.Connection.upgradeToTls(Connection.java:197)
02-24 02:29:35.535: E/AdapterClass(3122): Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xaf85c200: Failure in SSL library, usually a protocol error
02-24 02:29:35.535: E/AdapterClass(3122): error:1407743E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert inappropriate fallback (external/openssl/ssl/s23_clnt.c:765 0xac3f9e61:0x00000000)

Any ideas? I noticed this only happens when I use OkHttp for requests, but not for this particular request but in other parts of my app. So why would okhttp play a role here (as shown in the stacktrace)?

Answer 1

这个问题通过切换到OkHttp的最新版本（现在为2.2）得到解决（之前我使用的是1.6）。