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[Question] Proxy connection always fail with unexpected end of stream.

See original GitHub issue

Hi,

On some proxies (squid proxy) OKHttpClient works well. On others (also squid proxies), for an unknown reason, I always get the "unexpected end of stream" error (Caused by: java.io.EOFException: \n not found: size=0 content). For all the browsers and other http clients (java, apache, jetty), the proxy works.

Exception in thread "main" java.io.IOException: unexpected end of stream at okhttp3.internal.http.Http1xStream.readResponse(Http1xStream.java:215) at okhttp3.internal.http.Http1xStream.readResponseHeaders(Http1xStream.java:127) at okhttp3.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:732) at okhttp3.internal.http.HttpEngine.access$2(HttpEngine.java:726) at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:714) at okhttp3.internal.http.HttpEngine.readResponse(HttpEngine.java:566) at okhttp3.RealCall.getResponse(RealCall.java:245) at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:200) at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:162) at okhttp3.RealCall.execute(RealCall.java:59) at testok.run(testok.java:54) at testok.main(testok.java:61) Caused by: java.io.EOFException: \n not found: size=0 content=... at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:196) at okhttp3.internal.http.Http1xStream.readResponse(Http1xStream.java:191) ... 11 more

I have tried to debug it using the OKHttp and okio sources, by sniffing with Wireshark, but no luck. Somehow the server response is missing. How can I debug this?

The code that I use is quite simple.

` Authenticator proxyAuthenticator = new Authenticator() { public Request authenticate(Route route, Response response) throws IOException { String credential = Credentials.basic(user, password); return response.request().newBuilder() .header(“Proxy-Authorization”, credential) .build(); } };

OkHttpClient client = new OkHttpClient.Builder()
    .protocols(Arrays.asList(Protocol.HTTP_2, Protocol.HTTP_1_1, Protocol.SPDY_3))
    .connectTimeout(60, TimeUnit.SECONDS)
    .writeTimeout(60, TimeUnit.SECONDS)
    .readTimeout(60, TimeUnit.SECONDS)
    .proxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxy, port)))
    .proxyAuthenticator(proxyAuthenticator)
    .authenticator(proxyAuthenticator)
    .build();

Request request = new Request.Builder()
    .url(url)
    .header("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0")
    .build();

Response response = client.newCall(request).execute();
System.out.println("response " + response.code());
return response.body().string();`

Best Regards, Stefan Matei