使用 libcurl 在 PUT 请求中发送字符串 [英] Send string in PUT request with libcurl

问题描述

我的代码如下:

curl = curl_easy_init();

if (curl) {
    headers = curl_slist_append(headers, client_id_header);
    headers = curl_slist_append(headers, "Content-Type: application/json");

    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); 
    curl_easy_setopt(curl, CURLOPT_URL, "127.0.0.1/test.php");  
    curl_easy_setopt(curl, CURLOPT_PUT, 1L);

    res = curl_easy_perform(curl);
    res = curl_easy_send(curl, json_struct, strlen(json_struct), &io_len);

    curl_slist_free_all(headers);
    curl_easy_cleanup(curl);
}

这不起作用，程序只是永远挂起.

Which doesnt work, the program just hangs forever.

在 test.php 这些是我得到的请求标头:

In test.php these are the request headers I get:

array(6) {
  ["Host"]=>
  string(9) "127.0.0.1"
  ["Accept"]=>
  string(3) "*/*"
  ["Transfer-Encoding"]=>
  string(7) "chunked"
  ["X-ClientId"]=>
  string(36) "php_..."
  ["Content-Type"]=>
  string(16) "application/json"
  ["Expect"]=>
  string(12) "100-continue"
}

但是 body 是空的，意味着没有 json 数据与请求一起发送.

But the body is empty, means, no json data is sent with the request.

我想用 libcurl 做的实际上就是这些命令行脚本:

What I want to do with libcurl is actually nothing else then these command line script:

curl -X PUT -H "Content-Type: application/json" -d '... some json ...' 127.0.0.1/test.php

推荐答案

知道了 :)

不要使用

curl_easy_setopt(curl, CURLOPT_PUT, 1L);

发出自定义请求并将数据作为 POSTFIELDS 发送:

Make a custom request and send the data as POSTFIELDS:

curl = curl_easy_init();

if (curl) {
    headers = curl_slist_append(headers, client_id_header);
    headers = curl_slist_append(headers, "Content-Type: application/json");

    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers); 
    curl_easy_setopt(curl, CURLOPT_URL, request_url);  
    curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT"); /* !!! */

    curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json_struct); /* data goes here */

    res = curl_easy_perform(curl);

    curl_slist_free_all(headers);
    curl_easy_cleanup(curl);
}

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