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ServerConfig.java
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/*
* Copyright (c) 2005, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package robaho.net.httpserver;
import java.security.PrivilegedAction;
/**
* Parameters that users will not likely need to set
* but are useful for debugging
*/
@SuppressWarnings("removal")
class ServerConfig {
private static final int DEFAULT_IDLE_TIMER_SCHEDULE_MILLIS = 10000; // 10 sec.
private static final long DEFAULT_IDLE_INTERVAL_IN_SECS = 30;
private static final int DEFAULT_MAX_CONNECTIONS = -1; // no limit on maximum connections
private static final int DEFAULT_MAX_IDLE_CONNECTIONS = 200;
private static final long DEFAULT_MAX_REQ_TIME = -1; // default: forever
private static final long DEFAULT_MAX_RSP_TIME = -1; // default: forever
// default timer schedule, in milli seconds, for the timer task that's
// responsible for
// timing out request/response if max request/response time is configured
private static final long DEFAULT_REQ_RSP_TIMER_TASK_SCHEDULE_MILLIS = 1000;
private static final int DEFAULT_MAX_REQ_HEADERS = 200;
private static final long DEFAULT_DRAIN_AMOUNT = 64 * 1024;
private static long idleTimerScheduleMillis;
private static long idleIntervalMillis;
// The maximum number of bytes to drain from an inputstream
private static long drainAmount;
// the maximum number of connections that the server will allow to be open
// after which it will no longer "accept()" any new connections, till the
// current connection count goes down due to completion of processing the
// requests
private static int maxConnections;
private static int maxIdleConnections;
// The maximum number of request headers allowable
private static int maxReqHeaders;
// max time a request or response is allowed to take
private static long maxReqTime;
private static long maxRspTime;
private static long reqRspTimerScheduleMillis;
private static boolean debug;
// the value of the TCP_NODELAY socket-level option
private static boolean noDelay;
static {
java.security.AccessController.doPrivileged(
new PrivilegedAction<Void>() {
String pkg = "robaho.net.httpserver";
@Override
public Void run() {
idleIntervalMillis = Long.getLong(pkg + ".idleInterval",
DEFAULT_IDLE_INTERVAL_IN_SECS) * 1000;
if (idleIntervalMillis <= 0) {
idleIntervalMillis = DEFAULT_IDLE_INTERVAL_IN_SECS * 1000;
}
idleTimerScheduleMillis = Long.getLong(pkg + ".clockTick",
DEFAULT_IDLE_TIMER_SCHEDULE_MILLIS);
if (idleTimerScheduleMillis <= 0) {
// ignore zero or negative value and use the default schedule
idleTimerScheduleMillis = DEFAULT_IDLE_TIMER_SCHEDULE_MILLIS;
}
maxConnections = Integer.getInteger(
"jdk.httpserver.maxConnections",
DEFAULT_MAX_CONNECTIONS);
maxIdleConnections = Integer.getInteger(
pkg + ".maxIdleConnections",
DEFAULT_MAX_IDLE_CONNECTIONS);
drainAmount = Long.getLong(pkg + ".drainAmount",
DEFAULT_DRAIN_AMOUNT);
maxReqHeaders = Integer.getInteger(
pkg + ".maxReqHeaders",
DEFAULT_MAX_REQ_HEADERS);
if (maxReqHeaders <= 0) {
maxReqHeaders = DEFAULT_MAX_REQ_HEADERS;
}
maxReqTime = Long.getLong(pkg + ".maxReqTime",
DEFAULT_MAX_REQ_TIME);
maxRspTime = Long.getLong(pkg + ".maxRspTime",
DEFAULT_MAX_RSP_TIME);
reqRspTimerScheduleMillis = Long.getLong(pkg + ".timerMillis",
DEFAULT_REQ_RSP_TIMER_TASK_SCHEDULE_MILLIS);
if (reqRspTimerScheduleMillis <= 0) {
// ignore any negative or zero value for this configuration and reset
// to default schedule
reqRspTimerScheduleMillis = DEFAULT_REQ_RSP_TIMER_TASK_SCHEDULE_MILLIS;
}
debug = Boolean.getBoolean(pkg + ".debug");
noDelay = Boolean.getBoolean(pkg + ".nodelay");
return null;
}
});
}
static boolean debugEnabled() {
return debug;
}
/**
* {@return Returns the maximum duration, in milli seconds, a connection can be
* idle}
*/
static long getIdleIntervalMillis() {
return idleIntervalMillis;
}
/**
* {@return Returns the schedule, in milli seconds, for the timer task that is
* responsible
* for managing the idle connections}
*/
static long getIdleTimerScheduleMillis() {
return idleTimerScheduleMillis;
}
/**
* @return Returns the maximum number of connections that can be open at any
* given time.
* This method can return a value of 0 or negative to represent that the
* limit hasn't
* been configured.
*/
static int getMaxConnections() {
return maxConnections;
}
/**
* @return Returns the maximum number of connections that can be idle. This
* method
* can return a value of 0 or negative.
*/
static int getMaxIdleConnections() {
return maxIdleConnections;
}
static long getDrainAmount() {
return drainAmount;
}
static int getMaxReqHeaders() {
return maxReqHeaders;
}
/**
* @return Returns the maximum amount of time the server will wait for the
* request to be read
* completely. This method can return a value of 0 or negative to imply
* no maximum limit has
* been configured.
*/
static long getMaxReqTime() {
return maxReqTime;
}
/**
* @return Returns the maximum amount of time the server will wait for the
* response to be generated
* for a request that is being processed. This method can return a value
* of 0 or negative to
* imply no maximum limit has been configured.
*/
static long getMaxRspTime() {
return maxRspTime;
}
/**
* {@return Returns the timer schedule of the task that's responsible for timing
* out
* request/response that have been running longer than any configured timeout}
*/
static long getReqRspTimerScheduleMillis() {
return reqRspTimerScheduleMillis;
}
static boolean noDelay() {
return noDelay;
}
}