diff --git a/README.md b/README.md
index aa86d0c..2592695 100644
--- a/README.md
+++ b/README.md
@@ -230,10 +230,9 @@ The `EchoRequestProcessor` is an example of using an ExtProc to _respond_ to a r
 envoyexternalprocessor-echo-1      | Aug 20, 2023 3:27:40 PM extproc.processors.EchoRequestProcessor processRequestHeaders
 envoyexternalprocessor-echo-1      | INFO: EchoRequestProcessor.processRequestBody: /echo/hello responding before upstream
 ```
-and a JSON response like 
+and a response like 
 ```json
 {
-  "path": "/echo/hello",
   "body": "some data here"
 }
 ```
diff --git a/src/main/java/com/github/wrossmorrow/extproc/processors/DigestRequestProcessor.java b/src/main/java/com/github/wrossmorrow/extproc/processors/DigestRequestProcessor.java
index eda6415..4561b69 100644
--- a/src/main/java/com/github/wrossmorrow/extproc/processors/DigestRequestProcessor.java
+++ b/src/main/java/com/github/wrossmorrow/extproc/processors/DigestRequestProcessor.java
@@ -36,7 +36,7 @@ public void shutdown() {
   }
 
   public void processRequestHeaders(RequestContext ctx, Map<String, String> headers) {
-    StringBuilder hashtext = new StringBuilder(ctx.getMethod() + ":" + ctx.getPath() + ":");
+    StringBuilder hashtext = new StringBuilder(ctx.getMethod() + ":" + ctx.getPath());
     if (ctx.streamComplete()) {
       String digest = SHAHash(hashtext);
       ctx.addHeader("x-extproc-request-digest", digest);
@@ -47,6 +47,7 @@ public void processRequestHeaders(RequestContext ctx, Map<String, String> header
 
   public void processRequestBody(RequestContext ctx, String body) {
     StringBuilder hashtext = hashtexts.get(ctx.getRequestId());
+    hashtext.append(":");
     hashtext.append(body);
     if (ctx.streamComplete()) {
       String digest = SHAHash(hashtext);
@@ -61,19 +62,15 @@ public void processResponseHeaders(RequestContext ctx, Map<String, String> heade
     if (ctx.streamComplete()) {
       String digest = digests.getOrDefault(ctx.getRequestId(), "");
       ctx.addHeader("x-extproc-request-digest", digest);
-      ctx.addHeader("x-extproc-response-digest", digest);
       hashtexts.remove(ctx.getRequestId());
       digests.remove(ctx.getRequestId());
     }
   }
 
   public void processResponseBody(RequestContext ctx, String body) {
-    StringBuilder hashtext = hashtexts.get(ctx.getRequestId());
-    hashtext.append(body);
     if (ctx.streamComplete()) {
-      String digest = digests.get(ctx.getRequestId());
+      String digest = digests.getOrDefault(ctx.getRequestId(), "");
       ctx.addHeader("x-extproc-request-digest", digest);
-      ctx.addHeader("x-extproc-response-digest", SHAHash(hashtext));
       hashtexts.remove(ctx.getRequestId());
       digests.remove(ctx.getRequestId());
     }
diff --git a/src/main/java/com/github/wrossmorrow/extproc/processors/EchoRequestProcessor.java b/src/main/java/com/github/wrossmorrow/extproc/processors/EchoRequestProcessor.java
index 03d1c7a..8852a48 100644
--- a/src/main/java/com/github/wrossmorrow/extproc/processors/EchoRequestProcessor.java
+++ b/src/main/java/com/github/wrossmorrow/extproc/processors/EchoRequestProcessor.java
@@ -6,9 +6,11 @@
 import com.github.wrossmorrow.extproc.RequestProcessorHealthManager;
 import java.util.Map;
 import java.util.logging.Logger;
+import java.util.regex.Pattern;
 
 public class EchoRequestProcessor implements RequestProcessor {
   private static final Logger logger = Logger.getLogger(EchoRequestProcessor.class.getName());
+  private static final Pattern ECHO_PATH = Pattern.compile("/echo/.*");
 
   public String getName() {
     return "echo";
@@ -25,26 +27,24 @@ public void shutdown() {
   }
 
   public void processRequestHeaders(RequestContext ctx, Map<String, String> headers) {
-    if (ctx.getPath().startsWith("/echo")) {
+    if (ECHO_PATH.matcher(ctx.getPath()).matches()) {
       if (ctx.streamComplete()) {
         logger.info(
             "EchoRequestProcessor.processRequestHeaders: "
                 + ctx.getPath()
                 + " responding before upstream");
-        String jsonResponse = "{\"path\": \"" + ctx.getPath() + "\"}";
-        ctx.cancelRequest(200, ctx.getRequestHeaders(), jsonResponse);
+        ctx.cancelRequest(200, ctx.getRequestHeaders(), "");
       }
     }
   }
 
   public void processRequestBody(RequestContext ctx, String body) {
-    if (ctx.getPath().startsWith("/echo")) {
+    if (ECHO_PATH.matcher(ctx.getPath()).matches()) {
       logger.info(
           "EchoRequestProcessor.processRequestBody: "
               + ctx.getPath()
               + " responding before upstream");
-      String jsonResponse = "{\"path\": \"" + ctx.getPath() + "\", \"body\": \"" + body + "\"}";
-      ctx.cancelRequest(200, ctx.getRequestHeaders(), jsonResponse);
+      ctx.cancelRequest(200, ctx.getRequestHeaders(), body);
     }
   }