diff --git a/jetty-client/src/main/java/org/eclipse/jetty/client/ConnectionPool.java b/jetty-client/src/main/java/org/eclipse/jetty/client/ConnectionPool.java
index e3f84905df5..463bda30b5f 100644
--- a/jetty-client/src/main/java/org/eclipse/jetty/client/ConnectionPool.java
+++ b/jetty-client/src/main/java/org/eclipse/jetty/client/ConnectionPool.java
@@ -26,6 +26,7 @@ import java.util.concurrent.BlockingDeque;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.LinkedBlockingDeque;
 import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.locks.ReentrantLock;
 
 import org.eclipse.jetty.client.api.Connection;
 import org.eclipse.jetty.client.api.Destination;
@@ -36,7 +37,6 @@ import org.eclipse.jetty.util.component.ContainerLifeCycle;
 import org.eclipse.jetty.util.component.Dumpable;
 import org.eclipse.jetty.util.log.Log;
 import org.eclipse.jetty.util.log.Logger;
-import org.eclipse.jetty.util.thread.Locker;
 import org.eclipse.jetty.util.thread.Sweeper;
 
 public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
@@ -44,7 +44,7 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     protected static final Logger LOG = Log.getLogger(ConnectionPool.class);
 
     private final AtomicInteger connectionCount = new AtomicInteger();
-    private final Locker locker = new Locker();
+    private final ReentrantLock lock = new ReentrantLock();
     private final Destination destination;
     private final int maxConnections;
     private final Callback requester;
@@ -137,11 +137,18 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     protected void idleCreated(Connection connection)
     {
         boolean idle;
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             // Use "cold" new connections as last.
             idle = idleConnections.offerLast(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         idle(connection, idle);
     }
 
@@ -149,13 +156,19 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     {
         boolean acquired;
         Connection connection;
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             connection = idleConnections.pollFirst();
             if (connection == null)
                 return null;
             acquired = activeConnections.offer(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
 
         if (acquired)
         {
@@ -180,13 +193,20 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     public boolean release(Connection connection)
     {
         boolean idle;
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             if (!activeConnections.remove(connection))
                 return false;
             // Make sure we use "hot" connections first.
             idle = idleConnections.offerFirst(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         released(connection);
         return idle(connection, idle);
     }
@@ -216,11 +236,18 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     {
         boolean activeRemoved;
         boolean idleRemoved;
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             activeRemoved = activeConnections.remove(connection);
             idleRemoved = idleConnections.remove(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         if (activeRemoved)
             released(connection);
         boolean removed = activeRemoved || idleRemoved;
@@ -235,18 +262,30 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
 
     public boolean isActive(Connection connection)
     {
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             return activeConnections.contains(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
     }
 
     public boolean isIdle(Connection connection)
     {
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             return idleConnections.contains(connection);
         }
+        finally
+        {
+            lock.unlock();
+        }
     }
 
     public boolean isEmpty()
@@ -258,13 +297,20 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     {
         List<Connection> idles = new ArrayList<>();
         List<Connection> actives = new ArrayList<>();
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             idles.addAll(idleConnections);
             idleConnections.clear();
             actives.addAll(activeConnections);
             activeConnections.clear();
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         connectionCount.set(0);
 
         for (Connection connection : idles)
@@ -286,11 +332,18 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     {
         List<Connection> actives = new ArrayList<>();
         List<Connection> idles = new ArrayList<>();
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             actives.addAll(activeConnections);
             idles.addAll(idleConnections);
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         ContainerLifeCycle.dumpObject(out, this);
         ContainerLifeCycle.dump(out, indent, actives, idles);
     }
@@ -299,7 +352,9 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     public boolean sweep()
     {
         List<Sweeper.Sweepable> toSweep = new ArrayList<>();
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             for (Connection connection : getActiveConnections())
             {
@@ -307,6 +362,10 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
                     toSweep.add(((Sweeper.Sweepable)connection));
             }
         }
+        finally
+        {
+            lock.unlock();
+        }
 
         for (Sweeper.Sweepable candidate : toSweep)
         {
@@ -330,11 +389,18 @@ public class ConnectionPool implements Closeable, Dumpable, Sweeper.Sweepable
     {
         int activeSize;
         int idleSize;
-        try (Locker.Lock lock = this.locker.lock())
+        final ReentrantLock lock = this.lock;
+        lock.lock();
+        try
         {
             activeSize = activeConnections.size();
             idleSize = idleConnections.size();
         }
+        finally
+        {
+            lock.unlock();
+        }
+
         return String.format("%s[c=%d/%d,a=%d,i=%d]",
                 getClass().getSimpleName(),
                 connectionCount.get(),
diff --git a/jetty-client/src/main/java/org/eclipse/jetty/client/HttpChannel.java b/jetty-client/src/main/java/org/eclipse/jetty/client/HttpChannel.java
index 5f3ea2dba43..d493a9e200f 100644
--- a/jetty-client/src/main/java/org/eclipse/jetty/client/HttpChannel.java
+++ b/jetty-client/src/main/java/org/eclipse/jetty/client/HttpChannel.java
@@ -21,13 +21,11 @@ package org.eclipse.jetty.client;
 import org.eclipse.jetty.client.api.Result;
 import org.eclipse.jetty.util.log.Log;
 import org.eclipse.jetty.util.log.Logger;
-import org.eclipse.jetty.util.thread.Locker;
 
 public abstract class HttpChannel
 {
     protected static final Logger LOG = Log.getLogger(HttpChannel.class);
 
-    private final Locker _locker = new Locker();
     private final HttpDestination _destination;
     private HttpExchange _exchange;
 
@@ -53,7 +51,7 @@ public abstract class HttpChannel
     {
         boolean result = false;
         boolean abort = true;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             if (_exchange == null)
             {
@@ -76,7 +74,7 @@ public abstract class HttpChannel
     public boolean disassociate(HttpExchange exchange)
     {
         boolean result = false;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             HttpExchange existing = _exchange;
             _exchange = null;
@@ -86,6 +84,7 @@ public abstract class HttpChannel
                 result = true;
             }
         }
+
         if (LOG.isDebugEnabled())
             LOG.debug("{} disassociated {} from {}", exchange, result, this);
         return result;
@@ -93,7 +92,7 @@ public abstract class HttpChannel
 
     public HttpExchange getHttpExchange()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return _exchange;
         }
diff --git a/jetty-client/src/main/java/org/eclipse/jetty/client/HttpExchange.java b/jetty-client/src/main/java/org/eclipse/jetty/client/HttpExchange.java
index 7ef26400b0d..34ff1a8b091 100644
--- a/jetty-client/src/main/java/org/eclipse/jetty/client/HttpExchange.java
+++ b/jetty-client/src/main/java/org/eclipse/jetty/client/HttpExchange.java
@@ -24,7 +24,6 @@ import org.eclipse.jetty.client.api.Response;
 import org.eclipse.jetty.client.api.Result;
 import org.eclipse.jetty.util.log.Log;
 import org.eclipse.jetty.util.log.Logger;
-import org.eclipse.jetty.util.thread.Locker;
 
 public class HttpExchange
 {
@@ -34,7 +33,6 @@ public class HttpExchange
     private final HttpRequest request;
     private final List<Response.ResponseListener> listeners;
     private final HttpResponse response;
-    private final Locker _locker = new Locker();
     private State requestState = State.PENDING;
     private State responseState = State.PENDING;
     private HttpChannel _channel;
@@ -64,7 +62,7 @@ public class HttpExchange
 
     public Throwable getRequestFailure()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return requestFailure;
         }
@@ -82,7 +80,7 @@ public class HttpExchange
 
     public Throwable getResponseFailure()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return responseFailure;
         }
@@ -99,7 +97,7 @@ public class HttpExchange
     {
         boolean result = false;
         boolean abort = false;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             // Only associate if the exchange state is initial,
             // as the exchange could be already failed.
@@ -123,7 +121,7 @@ public class HttpExchange
     void disassociate(HttpChannel channel)
     {
         boolean abort = false;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             if (_channel != channel || requestState != State.TERMINATED || responseState != State.TERMINATED)
                 abort = true;
@@ -136,7 +134,7 @@ public class HttpExchange
 
     private HttpChannel getHttpChannel()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return _channel;
         }
@@ -144,7 +142,7 @@ public class HttpExchange
 
     public boolean requestComplete(Throwable failure)
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return completeRequest(failure);
         }
@@ -163,7 +161,7 @@ public class HttpExchange
 
     public boolean responseComplete(Throwable failure)
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return completeResponse(failure);
         }
@@ -183,7 +181,7 @@ public class HttpExchange
     public Result terminateRequest()
     {
         Result result = null;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             if (requestState == State.COMPLETED)
                 requestState = State.TERMINATED;
@@ -200,7 +198,7 @@ public class HttpExchange
     public Result terminateResponse()
     {
         Result result = null;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             if (responseState == State.COMPLETED)
                 responseState = State.TERMINATED;
@@ -220,7 +218,7 @@ public class HttpExchange
         // This will avoid that this exchange can be associated to a channel.
         boolean abortRequest;
         boolean abortResponse;
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             abortRequest = completeRequest(failure);
             abortResponse = completeResponse(failure);
@@ -273,7 +271,7 @@ public class HttpExchange
 
     public void resetResponse()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             responseState = State.PENDING;
             responseFailure = null;
@@ -290,7 +288,7 @@ public class HttpExchange
     @Override
     public String toString()
     {
-        try (Locker.Lock lock = _locker.lock())
+        synchronized (this)
         {
             return String.format("%s@%x req=%s/%s@%h res=%s/%s@%h",
                     HttpExchange.class.getSimpleName(),