1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "ap_config.h"
20 #include "http_config.h"
21 #include "http_connection.h"
23 #include "apr_buckets.h"
24 #include "util_filter.h"
26 module AP_MODULE_DECLARE_DATA echo_module;
32 static void *create_echo_server_config(apr_pool_t *p, server_rec *s)
34 EchoConfig *pConfig = apr_pcalloc(p, sizeof *pConfig);
36 pConfig->bEnabled = 0;
41 static const char *echo_on(cmd_parms *cmd, void *dummy, int arg)
43 EchoConfig *pConfig = ap_get_module_config(cmd->server->module_config,
45 pConfig->bEnabled = arg;
50 static int process_echo_connection(conn_rec *c)
52 apr_bucket_brigade *bb;
55 EchoConfig *pConfig = ap_get_module_config(c->base_server->module_config,
58 if (!pConfig->bEnabled) {
62 bb = apr_brigade_create(c->pool, c->bucket_alloc);
65 /* Get a single line of input from the client */
66 if ((rv = ap_get_brigade(c->input_filters, bb, AP_MODE_GETLINE,
67 APR_BLOCK_READ, 0) != APR_SUCCESS ||
68 APR_BRIGADE_EMPTY(bb))) {
69 apr_brigade_destroy(bb);
73 /* Make sure the data is flushed to the client */
74 b = apr_bucket_flush_create(c->bucket_alloc);
75 APR_BRIGADE_INSERT_TAIL(bb, b);
76 ap_pass_brigade(c->output_filters, bb);
81 static const command_rec echo_cmds[] =
83 AP_INIT_FLAG("ProtocolEcho", echo_on, NULL, RSRC_CONF,
84 "Run an echo server on this host"),
88 static void register_hooks(apr_pool_t *p)
90 ap_hook_process_connection(process_echo_connection, NULL, NULL,
94 module AP_MODULE_DECLARE_DATA echo_module = {
95 STANDARD20_MODULE_STUFF,
96 NULL, /* create per-directory config structure */
97 NULL, /* merge per-directory config structures */
98 create_echo_server_config, /* create per-server config structure */
99 NULL, /* merge per-server config structures */
100 echo_cmds, /* command apr_table_t */
101 register_hooks /* register hooks */