• • bounty将在6天后过期**。回答此问题可获得+200声望奖励。Saehun Sean Oh希望吸引更多人关注此问题。

设置

我有一个应用程序正在生产中，每天有数千名用户使用。
我使用的是retrofit2版本2.9.0（最新版本）
我的build.gradle在下面。

def retrofitVersion = '2.9.0'
api "com.squareup.retrofit2:converter-gson:${retrofitVersion}"
api "com.squareup.retrofit2:converter-scalars:${retrofitVersion}"
api "com.squareup.retrofit2:adapter-rxjava2:${retrofitVersion}"
api "com.squareup.retrofit2:retrofit:${retrofitVersion}"

我集成了Firebase Crashlytics，使应用程序可以在try-catch块中报告任何与API相关的异常。
例如：

viewModelScope.launch {
    try {
        val response = myRepository.getProfile()
        if (response.isSuccessful) {
            // continue with some business logic
        } else {
            Log.e(tag, "error", RunTimeException("some error")
        }
    } catch (throwable: Throwable){
        Log.e(tag, "error thrown", throwable)
        crashlytics.recordException(throwable)
    }
}

已知

现在在Crashlytics中，我每天都会收到成千上万的报告，说有一些错误。在我看到这些错误之前，我想向你保证，用户是通过适当的网络权限连接到互联网的。我看到用户在打开其他内容的日志。所以这些错误似乎是随机的。
错误数
1.未知主机异常

Non-fatal Exception: java.net.UnknownHostException: Unable to resolve host "my-host-address.com": No address associated with hostname
       at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:156)
       at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
       at java.net.InetAddress.getAllByName(InetAddress.java:1152)
       at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.java:5)
...
Caused by android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
       at libcore.io.Linux.android_getaddrinfo(Linux.java)
       at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74)
       at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:200)
       at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74)
       at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)
       at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
...

1.连接异常

Non-fatal Exception: java.net.ConnectException: Failed to connect to my-host-address.com/123.123.123.123:443
       at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:146)
       at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:191)
       at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:257)
       at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java)
       at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:47)
...
Caused by java.net.ConnectException: failed to connect to my-host-address.com/123.123.123.123 (port 443) from /:: (port 0) after 10000ms: connect failed: ENETUNREACH (Network is unreachable)
       at libcore.io.IoBridge.connect(IoBridge.java:142)
       at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:142)
       at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:390)
       at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:230)
       at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:212)
       at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:436)
       at java.net.Socket.connect(Socket.java:621)
...
Caused by android.system.ErrnoException: connect failed: ENETUNREACH (Network is unreachable)
       at libcore.io.Linux.connect(Linux.java)
       at libcore.io.ForwardingOs.connect(ForwardingOs.java:94)
       at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:138)
       at libcore.io.ForwardingOs.connect(ForwardingOs.java:94)
       at libcore.io.IoBridge.connectErrno(IoBridge.java:173)
       at libcore.io.IoBridge.connect(IoBridge.java:134)
...

1.套接字超时异常

Non-fatal Exception: java.net.SocketTimeoutException: timeout
       at okhttp3.internal.http2.Http2Stream$StreamTimeout.newTimeoutException(Http2Stream.java:4)
       at okhttp3.internal.http2.Http2Stream$StreamTimeout.exitAndThrowIfTimedOut(Http2Stream.java:8)
       at okhttp3.internal.http2.Http2Stream.takeHeaders(Http2Stream.java:24)
       at okhttp3.internal.http2.Http2ExchangeCodec.readResponseHeaders(Http2ExchangeCodec.java:5)
       at okhttp3.internal.connection.Exchange.readResponseHeaders(Exchange.java:2)
       at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:145)
...

1.另一个套接字超时异常

Non-fatal Exception: java.net.SocketTimeoutException: SSL handshake timed out
       at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(NativeCrypto.java)
       at com.android.org.conscrypt.NativeSsl.doHandshake(NativeSsl.java:387)
       at com.android.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake(ConscryptFileDescriptorSocket.java:234)
       at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:72)
       at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:52)
       at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:196)
       at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:257)
       at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java)
       at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:47)

最后，让我觉得这不是我的服务器问题的是，当我向Google服务器请求横幅广告时，也会遇到这种错误。

{   "Message": "Error while connecting to ad server: Failed to connect to pubads.g.doubleclick.net/216.58.195.130:443",   "Cause": "null",   "Response Info": {     "Adapter Responses": [],     "Response ID": "null",     "Response Extras": {},     "Mediation Adapter Class Name": ""   },   "Domain": "com.google.android.gms.ads",   "Code": 0 }

从Google Ads SDK的onAdFailedToLoad侦听器获取。

次尝试

我试着在Retrofit2/OkHttp3 github问题中找到一些解决方案，所以社区，每个人都说可能有一些网络权限问题或网络连接问题本身。但我知道用户连接到互联网，而不是使用某种代理。我与客户服务团队合作，他们走过了用户，他们没有发现任何网络问题。
任何见解都会很有帮助。提前感谢!