51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Base version taken from https://techoverflow.net/blog/2013/03/15/c-simple-http-download-using-libcurl-easy-api/
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#include "CurlHttpClient.h"
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#include <sstream>
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#include <iostream>
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#include <curl/curl.h>
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#include <curl/easy.h>
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using boost::none;
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using boost::optional;
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using std::string;
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using std::ostringstream;
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namespace cpputils {
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size_t CurlHttpClient::write_data(void *ptr, size_t size, size_t nmemb, ostringstream *stream) {
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stream->write((const char *) ptr, size * nmemb);
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return size * nmemb;
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}
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CurlHttpClient::CurlHttpClient() {
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curl = curl_easy_init();
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}
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CurlHttpClient::~CurlHttpClient() {
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curl_easy_cleanup(curl);
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}
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optional <string> CurlHttpClient::get(const string &url, optional<long> timeoutMsec) {
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curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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// example.com is redirected, so we tell libcurl to follow redirection
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
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curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1); //Prevent "longjmp causes uninitialized stack frame" bug
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curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "deflate");
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ostringstream out;
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &CurlHttpClient::write_data);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &out);
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if (timeoutMsec != none) {
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curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, *timeoutMsec);
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}
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// Perform the request, res will get the return code
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CURLcode res = curl_easy_perform(curl);
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// Check for errors
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if (res != CURLE_OK) {
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return none;
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}
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return out.str();
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}
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}
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