- 1 year ago
cURL C++ send accented chars
When using cURL in C++ to send accented characters or non-ASCII characters over HTTP, you need to ensure that the characters are properly encoded and included in the request. Here's how you can achieve this:
Encode the Text:
Use a library likelibiconv
orstd::wstring_convert
to encode the accented characters into the desired character encoding (usually UTF-8) before sending them in the request.Example using
std::wstring_convert
:cpp#include <codecvt>
#include <locale>
#include <string>
std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
std::wstring accentedText = L"áéíóú";
std::string utf8Text = converter.to_bytes(accentedText);
Set the Correct Headers:
Ensure that theContent-Type
header is set to indicate that you are sending data in UTF-8 encoding.cppcurl_slist* headers = nullptr;
headers = curl_slist_append(headers, "Content-Type: text/plain; charset=utf-8");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
Set the Request Data:
Set the encoded text as the data to be sent in the request using theCURLOPT_POSTFIELDS
option.cppcurl_easy_setopt(curl, CURLOPT_POSTFIELDS, utf8Text.c_str());
Perform the Request:
Finally, perform the HTTP request using cURL as usual.
Here's a complete example using cURL and the libcurl library:
cpp#include <curl/curl.h>
#include <codecvt>
#include <locale>
#include <string>
int main() {
CURL* curl = curl_easy_init();
if (!curl) {
// Error handling
return 1;
}
// Convert accented characters to UTF-8
std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
std::wstring accentedText = L"áéíóú";
std::string utf8Text = converter.to_bytes(accentedText);
// Set the Content-Type header
struct curl_slist* headers = nullptr;
headers = curl_slist_append(headers, "Content-Type: text/plain; charset=utf-8");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
// Set the request data
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, utf8Text.c_str());
// Set the target URL
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
// Perform the HTTP request
CURLcode res = curl_easy_perform(curl);
if (res != CURLE_OK) {
// Error handling
}
// Cleanup
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return 0;
}
In this example, make sure you have the libcurl library installed and properly linked to your project. Additionally, consider error handling and other best practices as necessary for your use case.