我在 Android 4.4 手机(特别是 Galaxy S4,尽管我相信这不是手机本身的问题)上遇到了问题。使用 Retrofit2.Http 在 HTTPS 连接时收到以下错误:
javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x737510d0: Failure in SSL library, usually a protocol error
error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure (external/openssl/ssl/s23_clnt.c:741 0x727fb7d0:0x00000000)
我发现一些资源表明这是 Android 4.4(1) 上的一个错误,但给出的示例始终假设使用 HttpsUrlConnection 类,而我没有使用该类。
我确实在这里找到了一些关于为连接设置特定 ConnectionSpec 实例的答案,这似乎很有希望,因为它是针对 Retrofit 的(2)。不幸的是,这对错误没有影响。我的代码示例(我尝试了 MODERN_TLS 和 COMPATIBLE_TLS):
return new OkHttpClient.Builder()
.addInterceptor(interceptor)
.connectionSpecs(Collections.singletonList(ConnectionSpec.MODERN_TLS))
.build();
切换到“http”确实有效,但这不是最终版本的选项。安全、加密的连接是绝对必要的,因此任何完全禁用 HTTPS 或盲目接受任何证书的解决方案都不太可能被接受。
提前致谢!
(1) Javax.net.ssl.SSLHandshakeException:javax.net.ssl.SSLProtocolException:SSL 握手中止:SSL 库失败,通常是协议错误 https://stackoverflow.com/questions/29916962/javax-net-ssl-sslhandshakeexception-javax-net-ssl-sslprotocolexception-ssl-han
(2) 改造 OkHttp SSLHandshakeException https://stackoverflow.com/questions/33353251/retrofit-okhttp-sslhandshakeexception
Edit:
运行 openssl 会给出以下结果:
[[my_computer]]$ ./openssl s_client -connect [[server_hidden_by_me]]:443 -tls1
CONNECTED(00000003)
depth=2 /C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Certification Authority
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
0 s:/OU=Domain Control Validated/OU=PositiveSSL/CN=[hidden_by_me]
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Domain Validation Secure Server CA
1 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Domain Validation Secure Server CA
i:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Certification Authority
2 s:/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Certification Authority
i:/C=SE/O=AddTrust AB/OU=AddTrust External TTP Network/CN=AddTrust External CA Root
---
Server certificate
-----BEGIN CERTIFICATE-----
[snip certificate for brevity]
-----END CERTIFICATE-----
subject=/OU=Domain Control Validated/OU=PositiveSSL/CN=[hidden_by_me]
issuer=/C=GB/ST=Greater Manchester/L=Salford/O=COMODO CA Limited/CN=COMODO RSA Domain Validation Secure Server CA
---
No client certificate CA names sent
---
SSL handshake has read 5449 bytes and written 426 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-SEED-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : TLSv1
Cipher : DHE-RSA-SEED-SHA
Session-ID: A4D84E2A0A16DB03082172695141BE1BB562F920ED4E4F6A9139733D9CAB7A54
Session-ID-ctx:
Master-Key: 119C10E5CC34297D1717E4AEAB8BF1CAA8BA012C125B10513FBFE0854B6AB0E9E65536F801990CA3C992FEB69ADBE279
Key-Arg : None
TLS session ticket lifetime hint: 300 (seconds)
TLS session ticket:
0000 - 5c 21 2c ac 68 a9 ef 71-8c 69 2a 86 0c da 6c cd \!,.h..q.i*...l.
[snipped for brevity]
Start Time: 1464109807
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---