libmicrohttpd获取http body
libmicrohttpd是一个c实现的轻量级，高性能的http server,可以嵌入程序中，但是这个库获取http的body比较麻烦。
#include <stdio.h>
#include <string>
#include <stdlib.h>
#include "microhttpd.h"
#define PAGE "<html><head><title>panda/title>"\
"</head><body>hello, i am panda, nice to meet you.</body></html>"
struct postStatus {
bool status;
char *buff;
};
bool getHttpBody(void *cls, MHD_Connection *connection, const char *url, const char *method, const char *version,
const char *upload_data, size_t *upload_data_size, void **ptr,std::string &body)
{
struct postStatus *post = NULL;
post = (struct postStatus*)*ptr;
if (post == NULL) {
post = (postStatus *)malloc(sizeof(struct postStatus));
post->status = false;
*ptr = post;
}
if (!post->status) {
post->status = true;
return false;
}
else {
if (*upload_data_size != 0) {
post->buff = (char *)malloc(*upload_data_size + 1);
memset(post->buff, 0, *upload_data_size + 1);
_snprintf(post->buff, *upload_data_size, "%s", upload_data);
*upload_data_size = 0;
return false;
}
else {
body = post->buff;
free(post->buff);
}
}
if (post != NULL)
{
free(post);
}
return true;
}
int onProcess(void *cls, MHD_Connection *connection, const char *url, const char *method, const char *version,
const char *upload_data, size_t *upload_data_size, void **ptr)
{
const char * page = (const char *)cls;
struct MHD_Response * response;
int ret;
std::string body;
if (getHttpBody(connection, connection, url, method, version, upload_data, upload_data_size, ptr, body) == false)
{
return MHD_YES;
}
printf("%s\n", body.c_str());
// 第三个参数建议建议使用MHD_RESPMEM_MUST_COPY
response = MHD_create_response_from_buffer(strlen(page), (void*)page, MHD_RESPMEM_MUST_COPY);
ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
return ret;
}
int main(int argc, char* argv[])
{
struct MHD_Daemon *d;
d = MHD_start_daemon(
MHD_USE_AUTO | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
4000, // http端口号
NULL, NULL, &onProcess, PAGE,
MHD_OPTION_END);
if (d == NULL)
return 1;
(void)getc(stdin);
MHD_stop_daemon(d);
return 0;
}
