Github user jpeach commented on a diff in the pull request:
https://github.com/apache/trafficserver/pull/1007#discussion_r78408986
--- Diff: example/protocol-stack/protocol-stack.cc ---
@@ -0,0 +1,62 @@
+/** @file
+
+ an example hello world plugin
+
+ @section license License
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF 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
+
+ http://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.
+ */
+
+#include <stdio.h>
+
+#include "ts/ts.h"
+#include "ts/ink_defs.h"
+
+#define DEBUG_TAG "protocol-stack"
+
+static int
+proto_stack_cb(TSCont contp ATS_UNUSED, TSEvent event, void *edata)
+{
+ TSHttpTxn txnp = (TSHttpTxn)edata;
+ char const *results[10];
+ int count = 0;
+ TSDebug(DEBUG_TAG, "Protocols:");
+ TSHttpTxnClientProtocolStackGet(txnp, 10, results, &count);
+ for (int i = 0; i < count; i++) {
+ TSDebug(DEBUG_TAG, "\t%d: %s", i, results[i]);
+ }
+ int ret = TSHttpTxnClientProtocolStackContains(txnp, "h2", NULL);
+ TSDebug(DEBUG_TAG, "Stack %s HTTP/2", ret == 1 ? "contains" : "does not
contain");
+ TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE);
--- End diff --
Use ``literalinclude`` to include this code sample in the man page (see
other examples of this in the docs tree).
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