Http client cannot set timeout

[ideaalloc]

When connected to the mainnet, it happens:

Caused by: java.net.SocketTimeoutException: timeout
	at okio.Okio$4.newTimeoutException(Okio.java:230)
	at okio.AsyncTimeout.exit(AsyncTimeout.java:285)
	at okio.AsyncTimeout$2.read(AsyncTimeout.java:241)
	at okio.RealBufferedSource.indexOf(RealBufferedSource.java:345)
	at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:217)
	at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:212)
	at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
	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 io.nebulas.client.http.OKHttpClient.call(OKHttpClient.java:84)
	... 15 common frames omitted

Thus, proposed to add timeout parameter for the client to control the timeout, below is for your reference:

import okhttp3.OkHttpClient;
import okhttp3.OkHttpClient.Builder;

// .....
Builder b = new Builder();
b.readTimeout(200, TimeUnit.MILLISECONDS);
b.writeTimeout(600, TimeUnit.MILLISECONDS);
// set other properties

OkHttpClient client = b.build();