一个长时间的http api 的 nginx 超时错误

直接访问IP是OK的。但是经过了中间一台域名机子，配置了nginx （基本上所有的超时时间timeout配置项都配置了足够的时间）的proxy_pass到这个IP上。

用浏览器方式http api ， 等待之后可以正确返回response。

但是，用下面的Kotlin代码的这个get方法调用：

fun get(url: String): String? {
    var result: String? = ""
    val okhttp = OkHttpClient.Builder()
            .connectTimeout(10, TimeUnit.MINUTES)
            .readTimeout(10, TimeUnit.MINUTES)
            .writeTimeout(10, TimeUnit.MINUTES)
            .build()

    val request = Request.Builder()
            .url(url)
            .addHeader("Connection","close")
            .build()

    val call = okhttp.newCall(request)

    try {
        val response = call.execute()
        result = response.body()?.string()
        println(result)

    } catch (e: IOException) {
        e.printStackTrace()
    }

    return result
}

出错日志：

{"message":"H5Agent hasRunningInstance is false","runningInstance":false}

java.io.IOException: unexpected end of stream on Connection{h5agent.alibaba.net:80, proxy=DIRECT hostAddress=h5agent.alibaba.net/42.156.238.36:80 cipherSuite=none protocol=http/1.1}
    at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:203)
    at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
    at okhttp3.RealCall.execute(RealCall.java:77)
    at com.easy.kotlin.HttpClientKt.get(HttpClient.kt:36)
    at com.easy.kotlin.HttpClientKt.main(HttpClient.kt:16)
Caused by: java.io.EOFException: \n not found: limit=0 content=…
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:227)
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:211)
    at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:187)
    ... 17 more

用下面的Kotlin代码getAsync函数调用：

fun getAsync(url: String) {
    val okhttp = OkHttpClient.Builder()
            .connectTimeout(10, TimeUnit.MINUTES)
            .readTimeout(10, TimeUnit.MINUTES)
            .writeTimeout(10, TimeUnit.MINUTES)
            .build()

    val request = Request.Builder()
            .url(url)
            .build()

    val call = okhttp.newCall(request)

    call.enqueue(object : Callback {
        override fun onFailure(call: Call, e: IOException) {
            println(e.message)
            e.printStackTrace()
        }

        override fun onResponse(call: Call, response: Response) {
            try {
                val result = response.body()?.string()
                println(result)
            } catch (e: IOException) {
                println("response = ${response}")
                e.printStackTrace()
            }
        }
    })

}

也是抛错：

{"message":"H5Agent hasRunningInstance is false","runningInstance":false}
unexpected end of stream on Connection{h5agent.alibaba.net:80, proxy=DIRECT hostAddress=h5agent.alibaba.net/42.156.238.36:80 cipherSuite=none protocol=http/1.1}
java.io.IOException: unexpected end of stream on Connection{h5agent.alibaba.net:80, proxy=DIRECT hostAddress=h5agent.alibaba.net/42.156.238.36:80 cipherSuite=none protocol=http/1.1}
    at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:203)
    at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
    at okhttp3.RealCall$AsyncCall.execute(RealCall.java:147)
    at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.EOFException: \n not found: limit=0 content=…
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:227)
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:211)
    at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:187)
    ... 19 more