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low level js bindings

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ading2210 2024-01-03 17:10:57 -05:00
parent 465fa2e170
commit f0ac312f35
3 changed files with 76 additions and 8 deletions
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30
client/main.c
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@ -1,9 +1,19 @@
#include "emscripten/emscripten.h"
#include <stdlib.h>
#include <stdio.h>
#include <curl/curl.h>
#include <emscripten.h>
#include <string.h>
int write_function(void *data, size_t size, size_t nmemb, void(*data_callback)(char* chunk_ptr, int chunk_size)) {
long real_size = size * nmemb;
char* chunk = malloc(real_size);
memcpy(chunk, data, real_size);
data_callback(chunk, real_size);
free(chunk);
return real_size;
}
int do_request(const char* url) {
void perform_request(const char* url, void(*data_callback)(char* chunk_ptr, int chunk_size), void(*end_callback)()) {
printf("downloading %s\n", url);
CURL *http_handle;
@ -18,6 +28,11 @@ int do_request(const char* url) {
curl_easy_setopt(http_handle, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
curl_easy_setopt(http_handle, CURLOPT_CAINFO, "/cacert.pem");
curl_easy_setopt(http_handle, CURLOPT_CAPATH, "/cacert.pem");
//callbacks to pass the response data back to js
curl_easy_setopt(http_handle, CURLOPT_WRITEFUNCTION, &write_function);
curl_easy_setopt(http_handle, CURLOPT_WRITEDATA, data_callback);
multi_handle = curl_multi_init();
curl_multi_add_handle(multi_handle, http_handle);
@ -42,11 +57,16 @@ int do_request(const char* url) {
curl_easy_cleanup(http_handle);
curl_multi_cleanup(multi_handle);
curl_global_cleanup();
return 0;
(*end_callback)();
}
char* copy_bytes(const char* ptr, const int size) {
char* new_ptr = malloc(size);
memcpy(new_ptr, ptr, size);
return new_ptr;
}
int main() {
printf("emscripten libcurl module loaded\n");
do_request("https://ifconfig.me/all");
}