没有自动Proxy-Connection标头的libcurl HTTP HEAD请求 [英] libcurl HTTP HEAD request without automatic Proxy-Connection header

问题描述

我需要在以下方面使用libcurl进行澄清:

I need clarifications on using libcurl for the following:

我需要发送如下所示的http HEAD请求::

I need to send an http HEAD request shown as below ::

HEAD /mshare/3/30002:12:primary/stream_xNKNVH.mpeg HTTP/1.1
Host: 192.168.70.1:8080
Accept: */*
User-Agent: Kreatel_IP-STB
getcontentFeatures.dlna.org: 1

我编写的代码(如下所示)以略有不同的方式发送HEAD请求:

The code I wrote (shown below) , sends the HEAD Request in slightly different way:

 curl_global_init(CURL_GLOBAL_ALL);
 CURL* ctx = NULL;
 const char *url = "http://192.168.70.1:8080/mshare/3/30002:12:primary/stream_xNKNVH.mpeg" ;
 char *returnString;
 struct curl_slist *headers = NULL;
 ctx = curl_easy_init();
 headers = curl_slist_append(headers,"Accept: */*");
 headers = curl_slist_append(headers,"User-Agent: Kreatel_IP-STB");\
 headers = curl_slist_append(headers,"getcontentFeatures.dlna.org: 1");
 headers = curl_slist_append(headers,"Pragma:");
 headers = curl_slist_append(headers,"Proxy-Connection:");
 curl_easy_setopt(ctx,CURLOPT_HTTPHEADER , headers );
 curl_easy_setopt(ctx,CURLOPT_NOBODY ,1 );
 curl_easy_setopt(ctx,CURLOPT_VERBOSE, 1);
 curl_easy_setopt(ctx,CURLOPT_URL,url );
 curl_easy_setopt(ctx,CURLOPT_NOPROGRESS ,1 );
 curl_easy_perform(ctx);
 curl_easy_cleanup(ctx);
 curl_global_cleanup();

上面显示的代码以略有不同的形式发送HEAD请求，并添加了Proxy-Connection标头(如下所示)

The code shown above sends the HEAD Request in slightly different form, adding a Proxy-Connection header (shown below)

HEAD http://192.168.70.1:8080/mshare/3/30002:12:primary/stream_xNKNVH.mpeg HTTP/1.1
Host: 192.168.70.1:8080
Proxy-Connection: Keep-Alive
Accept: */*
User-Agent: Kreatel_IP-STB
getcontentFeatures.dlna.org: 1

任何人都可以共享适当的代码吗?

Can any one , share the appropriate code ?

推荐答案

如果您不想使用http_proxy环境，请按如下所示的空值调用函数.

if you don't want to use http_proxy envirionment, call function by empty value like below.

curl_easy_setopt(curl, CURLOPT_PROXY, "");

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