1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 /*
26 * This test sends data with CURLOPT_KEEP_SENDING_ON_ERROR.
27 * The server responds with an early error response.
28 * The test is successful if the connection can be reused for the next request,
29 * because this implies that the data has been sent completely to the server.
30 */
31
32 #include "test.h"
33
34 #include "memdebug.h"
35
36 struct cb_data {
37 CURL *easy_handle;
38 int response_received;
39 int paused;
40 size_t remaining_bytes;
41 };
42
43
reset_data(struct cb_data * data,CURL * curl)44 static void reset_data(struct cb_data *data, CURL *curl)
45 {
46 data->easy_handle = curl;
47 data->response_received = 0;
48 data->paused = 0;
49 data->remaining_bytes = 3;
50 }
51
52
read_callback(char * ptr,size_t size,size_t nitems,void * userdata)53 static size_t read_callback(char *ptr, size_t size, size_t nitems,
54 void *userdata)
55 {
56 struct cb_data *data = (struct cb_data *)userdata;
57
58 /* wait until the server has sent all response headers */
59 if(data->response_received) {
60 size_t totalsize = nitems * size;
61
62 size_t bytes_to_send = data->remaining_bytes;
63 if(bytes_to_send > totalsize) {
64 bytes_to_send = totalsize;
65 }
66
67 memset(ptr, 'a', bytes_to_send);
68 data->remaining_bytes -= bytes_to_send;
69
70 return bytes_to_send;
71 }
72 else {
73 data->paused = 1;
74 return CURL_READFUNC_PAUSE;
75 }
76 }
77
78
write_callback(char * ptr,size_t size,size_t nmemb,void * userdata)79 static size_t write_callback(char *ptr, size_t size, size_t nmemb,
80 void *userdata)
81 {
82 struct cb_data *data = (struct cb_data *)userdata;
83 size_t totalsize = nmemb * size;
84
85 /* unused parameter */
86 (void)ptr;
87
88 /* all response headers have been received */
89 data->response_received = 1;
90
91 if(data->paused) {
92 /* continue to send request body data */
93 data->paused = 0;
94 curl_easy_pause(data->easy_handle, CURLPAUSE_CONT);
95 }
96
97 return totalsize;
98 }
99
100
perform_and_check_connections(CURL * curl,const char * description,long expected_connections)101 static int perform_and_check_connections(CURL *curl, const char *description,
102 long expected_connections)
103 {
104 CURLcode res;
105 long connections = 0;
106
107 res = curl_easy_perform(curl);
108 if(res != CURLE_OK) {
109 fprintf(stderr, "curl_easy_perform() failed with %d\n", res);
110 return TEST_ERR_MAJOR_BAD;
111 }
112
113 res = curl_easy_getinfo(curl, CURLINFO_NUM_CONNECTS, &connections);
114 if(res != CURLE_OK) {
115 fprintf(stderr, "curl_easy_getinfo() failed\n");
116 return TEST_ERR_MAJOR_BAD;
117 }
118
119 fprintf(stderr, "%s: expected: %ld connections; actual: %ld connections\n",
120 description, expected_connections, connections);
121
122 if(connections != expected_connections) {
123 return TEST_ERR_FAILURE;
124 }
125
126 return TEST_ERR_SUCCESS;
127 }
128
129
test(char * URL)130 CURLcode test(char *URL)
131 {
132 struct cb_data data;
133 CURL *curl = NULL;
134 CURLcode res = TEST_ERR_FAILURE;
135 int result;
136
137 if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
138 fprintf(stderr, "curl_global_init() failed\n");
139 return TEST_ERR_MAJOR_BAD;
140 }
141
142 curl = curl_easy_init();
143 if(!curl) {
144 fprintf(stderr, "curl_easy_init() failed\n");
145 curl_global_cleanup();
146 return TEST_ERR_MAJOR_BAD;
147 }
148
149 reset_data(&data, curl);
150
151 test_setopt(curl, CURLOPT_URL, URL);
152 test_setopt(curl, CURLOPT_POST, 1L);
153 test_setopt(curl, CURLOPT_POSTFIELDSIZE_LARGE,
154 (curl_off_t)data.remaining_bytes);
155 test_setopt(curl, CURLOPT_VERBOSE, 1L);
156 test_setopt(curl, CURLOPT_READFUNCTION, read_callback);
157 test_setopt(curl, CURLOPT_READDATA, &data);
158 test_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
159 test_setopt(curl, CURLOPT_WRITEDATA, &data);
160
161 result = perform_and_check_connections(curl,
162 "First request without CURLOPT_KEEP_SENDING_ON_ERROR", 1);
163 if(result != TEST_ERR_SUCCESS) {
164 res = (CURLcode) result;
165 goto test_cleanup;
166 }
167
168 reset_data(&data, curl);
169
170 result = perform_and_check_connections(curl,
171 "Second request without CURLOPT_KEEP_SENDING_ON_ERROR", 1);
172 if(result != TEST_ERR_SUCCESS) {
173 res = (CURLcode) result;
174 goto test_cleanup;
175 }
176
177 test_setopt(curl, CURLOPT_KEEP_SENDING_ON_ERROR, 1L);
178
179 reset_data(&data, curl);
180
181 result = perform_and_check_connections(curl,
182 "First request with CURLOPT_KEEP_SENDING_ON_ERROR", 1);
183 if(result != TEST_ERR_SUCCESS) {
184 res = (CURLcode) result;
185 goto test_cleanup;
186 }
187
188 reset_data(&data, curl);
189
190 result = perform_and_check_connections(curl,
191 "Second request with CURLOPT_KEEP_SENDING_ON_ERROR", 0);
192 if(result != TEST_ERR_SUCCESS) {
193 res = (CURLcode) result;
194 goto test_cleanup;
195 }
196
197 res = TEST_ERR_SUCCESS;
198
199 test_cleanup:
200
201 curl_easy_cleanup(curl);
202
203 curl_global_cleanup();
204
205 return res;
206 }
207
