io.netty.resolver.dns.UnixResolverOptions Maven / Gradle / Ivy
/*
* Copyright 2020 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.resolver.dns;
/**
* Represents options defined in a file of the format etc/resolv.conf.
*/
final class UnixResolverOptions {
private final int ndots;
private final int timeout;
private final int attempts;
UnixResolverOptions(int ndots, int timeout, int attempts) {
this.ndots = ndots;
this.timeout = timeout;
this.attempts = attempts;
}
static UnixResolverOptions.Builder newBuilder() {
return new UnixResolverOptions.Builder();
}
/**
* The number of dots which must appear in a name before an initial absolute query is made.
* The default value is {@code 1}.
*/
int ndots() {
return ndots;
}
/**
* The timeout of each DNS query performed by this resolver (in seconds).
* The default value is {@code 5}.
*/
int timeout() {
return timeout;
}
/**
* The maximum allowed number of DNS queries to send when resolving a host name.
* The default value is {@code 16}.
*/
int attempts() {
return attempts;
}
static final class Builder {
private int ndots = 1;
private int timeout = 5;
private int attempts = 16;
private Builder() {
}
void setNdots(int ndots) {
this.ndots = ndots;
}
void setTimeout(int timeout) {
this.timeout = timeout;
}
void setAttempts(int attempts) {
this.attempts = attempts;
}
UnixResolverOptions build() {
return new UnixResolverOptions(ndots, timeout, attempts);
}
}
}