The attached sample may be enough to demonstrate what you want. But I am
doing a post request instead of get, basically the same though.
Hope this help.
Kiyo
yeguo wu wrote:
Hi All
I am a fresh man to use the libneon.
but I don't know how to get the response to a string or char * simply.
In the source code , I just find the function dispatch_to_fd to read
the response to a file or stdout, who can tell me how to code it?
thanks
best wishes
wuyeguo
------------------------------------------------------------------------
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ne_session.h"
#include "ne_uri.h"
#include "ne_basic.h"
#include "ne_utils.h"
#include "ne_request.h"
static char *
read_req(ne_request *req)
{
ne_buffer *buf = ne_buffer_create();
ssize_t len;
char data[16384];
while ((len = ne_read_response_block(req, data, sizeof data)) > 0)
ne_buffer_append(buf, data, len);
if (len == 0) return ne_buffer_finish(buf);
ne_buffer_destroy(buf);
return NULL;
}
static int
handle_req(ne_request *req, char** pdata)
{
*pdata = NULL;
int ret = NE_ERROR;
const ne_status *const st = ne_get_status(req);
do {
if ((ret = ne_begin_request(req)) != NE_OK) break;
if (st->klass == 2) {
*pdata = read_req(req);
ret = (*pdata != NULL) ? NE_OK : NE_ERROR;
} else {
ret = ne_discard_response(req);
}
if (ret == NE_OK) ret = ne_end_request(req);
} while (ret == NE_RETRY);
if (ret != NE_OK && *pdata != NULL) {
ne_free(*pdata);
*pdata = NULL;
}
return ret;
}
static char*
do_http_post(const char* url, const char* data, int timeout)
{
char* res = NULL;
ne_uri uri = { 0 };
ne_session *sess = NULL;
ne_request *req = NULL;
#if 0
ne_uri uri2 = { 0 };
char* path;
#endif
int ret;
if (ne_uri_parse(url, &uri) || uri.host == NULL || uri.path == NULL) goto lbl_exit;
if (uri.scheme == NULL) uri.scheme = "http";
if (uri.port == 0) uri.port = ne_uri_defaultport(uri.scheme);
if ((sess = ne_session_create(uri.scheme, uri.host, uri.port)) == NULL) goto lbl_exit;
if (timeout > 0) ne_set_read_timeout(sess, timeout);
#if 0 /* not work with 0.25.5 - ne_uri_unparse crashes */
memcpy(&uri2, &uri, sizeof(uri));
uri2.scheme = NULL;
uri2.host = NULL;
if ((path = ne_uri_unparse(&uri2)) == NULL) goto lbl_exit;
req = ne_request_create(sess, "POST", path);
#else
req = ne_request_create(sess, "POST", url);
#endif
#if 0
ne_free(path);
#endif
if (req == NULL) goto lbl_exit;
ne_add_request_header(req, "Content-Type", "application/x-www-form-urlencoded");
#if 0 /* new from 0.26 */
ne_set_request_flag(req, NE_REQFLAG_IDEMPOTENT, 0);
#endif
if (data == NULL) data = "";
ne_set_request_body_buffer(req, data, strlen(data));
ret = handle_req(req, &res);
lbl_exit:
if (req != NULL) ne_request_destroy(req);
if (sess != NULL) ne_session_destroy(sess);
ne_uri_free(&uri);
return res;
}
int main(int argc, char* argv[])
{
if (argc < 3) return 1;
if (ne_sock_init()) return 2;
char *res = do_http_post(argv[1], argv[2], 0);
if (res == NULL)
fprintf(stderr, "failed\n");
else {
printf("%s\n", res);
ne_free(res);
}
ne_sock_exit();
return 0;
}
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