diff --git a/servicetalk-http-api/src/main/java/io/servicetalk/http/api/DefaultHttpHeadersFactory.java b/servicetalk-http-api/src/main/java/io/servicetalk/http/api/DefaultHttpHeadersFactory.java
index 37523168f5..2ede92ae15 100644
--- a/servicetalk-http-api/src/main/java/io/servicetalk/http/api/DefaultHttpHeadersFactory.java
+++ b/servicetalk-http-api/src/main/java/io/servicetalk/http/api/DefaultHttpHeadersFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2018 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2018-2019, 2021-2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -85,4 +85,15 @@ public boolean validateCookies() {
     public boolean validateValues() {
         return validateValues;
     }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() +
+                "{validateNames=" + validateNames +
+                ", validateCookies=" + validateCookies +
+                ", validateValues=" + validateValues +
+                ", headersArraySizeHint=" + headersArraySizeHint +
+                ", trailersArraySizeHint=" + trailersArraySizeHint +
+                '}';
+    }
 }
diff --git a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/DefaultKeepAlivePolicy.java b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/DefaultKeepAlivePolicy.java
index 71f3c65c8a..dfecdf3c3d 100644
--- a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/DefaultKeepAlivePolicy.java
+++ b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/DefaultKeepAlivePolicy.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2020 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2020, 2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,4 +46,13 @@ public Duration ackTimeout() {
     public boolean withoutActiveStreams() {
         return withoutActiveStreams;
     }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() +
+                "{idleDuration=" + idleDuration +
+                ", ackTimeout=" + ackTimeout +
+                ", withoutActiveStreams=" + withoutActiveStreams +
+                '}';
+    }
 }
diff --git a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1ProtocolConfigBuilder.java b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1ProtocolConfigBuilder.java
index 4c430062fc..028cbfb876 100644
--- a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1ProtocolConfigBuilder.java
+++ b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1ProtocolConfigBuilder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2019-2020 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2019-2020, 2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -211,5 +211,19 @@ public int trailersEncodedSizeEstimate() {
         public H1SpecExceptions specExceptions() {
             return specExceptions;
         }
+
+        @Override
+        public String toString() {
+            return getClass().getSimpleName() +
+                    "{alpnId=" + alpnId() +
+                    ", headersFactory=" + headersFactory +
+                    ", maxPipelinedRequests=" + maxPipelinedRequests +
+                    ", maxStartLineLength=" + maxStartLineLength +
+                    ", maxHeaderFieldLength=" + maxHeaderFieldLength +
+                    ", headersEncodedSizeEstimate=" + headersEncodedSizeEstimate +
+                    ", trailersEncodedSizeEstimate=" + trailersEncodedSizeEstimate +
+                    ", specExceptions=" + specExceptions +
+                    '}';
+        }
     }
 }
diff --git a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1SpecExceptions.java b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1SpecExceptions.java
index 4e451ab8fb..da1b05d9a0 100644
--- a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1SpecExceptions.java
+++ b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H1SpecExceptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2020 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2020-2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,6 +54,14 @@ public boolean allowLFWithoutCR() {
         return allowLFWithoutCR;
     }
 
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() +
+                "{allowPrematureClosureBeforePayloadBody=" + allowPrematureClosureBeforePayloadBody +
+                ", allowLFWithoutCR=" + allowLFWithoutCR +
+                '}';
+    }
+
     /**
      * Builder for {@link H1SpecExceptions}.
      */
diff --git a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2HeadersFactory.java b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2HeadersFactory.java
index 50d1805f9c..808518a5cf 100644
--- a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2HeadersFactory.java
+++ b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2HeadersFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2019 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2019, 2021-2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,8 +20,6 @@
 
 import io.netty.handler.codec.http2.DefaultHttp2Headers;
 
-import java.util.function.BiPredicate;
-
 /**
  * A {@link HttpHeadersFactory} optimized for HTTP/2.
  */
@@ -30,8 +28,6 @@ public final class H2HeadersFactory implements HttpHeadersFactory {
     private static final boolean DEFAULT_VALIDATE_VALUES = false;
     public static final HttpHeadersFactory INSTANCE = new H2HeadersFactory(true, true, DEFAULT_VALIDATE_VALUES);
 
-    static final BiPredicate<CharSequence, CharSequence> DEFAULT_SENSITIVITY_DETECTOR = (name, value) -> false;
-
     private final boolean validateNames;
     private final boolean validateCookies;
     private final boolean validateValues;
@@ -96,4 +92,15 @@ public boolean validateCookies() {
     public boolean validateValues() {
         return validateValues;
     }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() +
+                "{validateNames=" + validateNames +
+                ", validateCookies=" + validateCookies +
+                ", validateValues=" + validateValues +
+                ", headersArraySizeHint=" + headersArraySizeHint +
+                ", trailersArraySizeHint=" + trailersArraySizeHint +
+                '}';
+    }
 }
diff --git a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2ProtocolConfigBuilder.java b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2ProtocolConfigBuilder.java
index fd3fc03f93..d9b4b2f45f 100644
--- a/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2ProtocolConfigBuilder.java
+++ b/servicetalk-http-netty/src/main/java/io/servicetalk/http/netty/H2ProtocolConfigBuilder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2019 Apple Inc. and the ServiceTalk project authors
+ * Copyright © 2019-2022 Apple Inc. and the ServiceTalk project authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,6 @@
 import java.util.function.BooleanSupplier;
 import javax.annotation.Nullable;
 
-import static io.servicetalk.http.netty.H2HeadersFactory.DEFAULT_SENSITIVITY_DETECTOR;
 import static io.servicetalk.http.netty.H2KeepAlivePolicies.DISABLE_KEEP_ALIVE;
 import static java.util.Objects.requireNonNull;
 
@@ -37,6 +36,8 @@
  */
 public final class H2ProtocolConfigBuilder {
 
+    private static final BiPredicate<CharSequence, CharSequence> DEFAULT_SENSITIVITY_DETECTOR = (name, value) -> false;
+
     private HttpHeadersFactory headersFactory = H2HeadersFactory.INSTANCE;
     private BiPredicate<CharSequence, CharSequence> headersSensitivityDetector = DEFAULT_SENSITIVITY_DETECTOR;
     @Nullable
@@ -152,5 +153,17 @@ public UserDataLoggerConfig frameLoggerConfig() {
         public KeepAlivePolicy keepAlivePolicy() {
             return keepAlivePolicy;
         }
+
+        @Override
+        public String toString() {
+            return getClass().getSimpleName() +
+                    "{alpnId=" + alpnId() +
+                    ", headersFactory=" + headersFactory +
+                    ", headersSensitivityDetector=" + (headersSensitivityDetector == DEFAULT_SENSITIVITY_DETECTOR ?
+                            "DEFAULT_SENSITIVITY_DETECTOR" : headersSensitivityDetector.toString()) +
+                    ", frameLoggerConfig=" + frameLoggerConfig +
+                    ", keepAlivePolicy=" + keepAlivePolicy +
+                    '}';
+        }
     }
 }