com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: Handshake failed
或
02-10 21:41:26.496 11524-12747/com.example.blgui3 W/System.err﹕ javax.net.ssl.SSLPeerUnverifiedException: No peer certificate
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at com.android.org.conscrypt.SSLNullSession.getPeerCertificates(SSLNullSession.java:104)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:93)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.conn.ssl.SSLSocketFactory.createSocket(SSLSocketFactory.java:388)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:165)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:372)
02-10 21:41:26.506 11524-12747/com.example.blgui3 W/System.err﹕ at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
当我尝试发出http请求（第二个）或使用Volley为我做（第一个）时，我经常遇到此错误。
我在这里检查过其他帖子，花了好几个小时研究这个问题，但我没有找到任何东西。
我安装了CentOS的VPS，因为我不是Linux用户，所以我通过WHM以root权限访问它。
我在Verisign的域名上有一个SSL证书，错误出现在4.4（现在我收到了升级）和5.0，但4.1上没有。
我从Verisign搬到Thawte（证书即将到期，Thawte更便宜）我希望这可以解决问题，但事实并非如此。证书不是中间证书。
事实
根据this link证书已正确安装。我也和Thawte谈过，并被告知应该没有问题。
当您在浏览器中检查domain的证书时，会显示The connection uses TLS1.2. The connection is encrypted and authenticated using AES_128_GCM and uses ECDHE_RSA as the key exchange mechanism.
openssl s_client -connect www.dappwall.com:443的（部分）输出是
Certificate chain
0 s:/C=CH/ST=Basel-Stadt/L=Basel/O=Dappwall GmbH/CN=www.dappwall.com
i:/C=US/O=thawte, Inc./CN=thawte SSL CA - G2
1 s:/C=US/O=thawte, Inc./CN=thawte SSL CA - G2
i:/C=US/O=thawte, Inc./OU=Certification Services Division/OU=(c) 2006 thawte,
Inc. - For authorized use only/CN=thawte Primary Root CA
2 s:/C=US/O=thawte, Inc./OU=Certification Services Division/OU=(c) 2006 thawte,
Inc. - For authorized use only/CN=thawte Primary Root CA
i:/C=ZA/ST=Western Cape/L=Cape Town/O=Thawte Consulting cc/OU=Certification S
ervices Division/CN=Thawte Premium Server CA/emailAddress=premium-server@thawte.
com
No client certificate CA names sent
---
SSL handshake has read 4198 bytes and written 340 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
Server public key is 2048 bit
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : TLSv1
Cipher : DHE-RSA-AES256-SHA
Session-ID: C1FC9A551735B29233A5AFF619CE343E0C62387DED33A2C82075F96719646289
Session-ID-ctx:
Master-Key: B615A4F45F2C0A2F9C37813A3F9E89448B5C54B532FF0F9C831EA38C9D1A9DA4
B722F665DD7904A3D5ABEAA5A493AEE5
Key-Arg : None
Start Time: 1423598904
Timeout : 300 (sec)
Verify return code: 20 (unable to get local issuer certificate)
有什么想法吗？也许我只是从服务器中删除SSL并使用HTTP作为最后的手段，这与设置信任所有证书相同。
考虑到我在应用程序的很多地方替换了AsleyTasks和Volley（大约25次）我不打算创建特殊的HttpClients，因为Volley正在使用内置的httpclient而我不想覆盖它代码。