Question

我使用这个选项：

curl_easy_setopt(curl, CURLOPT_URL, urlUpload); 
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, body.c_str());
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header);

必须是带标题的帖子请求。在标头变量中有长度

***
char sizeStr[50];
sprintf(sizeStr, "Content-Length: %d", body.length());

*** 

header = curl_slist_append(header, sizeStr);

***

我要做的是将视频上传到YouTube，我正在使用their manual

我收到这样的错误。

<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
<title>Error 411 (Length Required)!!1</title>
<style>
  *many symbols here* 
</style>
<a href=//www.google.com/ id=g><img src=//www.google.com/images/logo_sm.gif alt=Google></a>
<p><b>411.</b> <ins>Thatв€™s an error.</ins>
<p>POST requests require a <code>Content-length</code> header. <ins>Thatв€™s all we know.</ins>

也许我必须使用其他一些CURLoptions？

更新当我设置

curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);

我也收到了

* About to connect() to uploads.gdata.youtube.com port 80 (#0)
*   Trying 74.125.XX.XXX... * connected
* Connected to uploads.gdata.youtube.com (74.125.XX.XXX) port 80 (#0)
> POST /feeds/api/users/default/uploads HTTP/1.1

Accept: */*

Host: uploads.gdata.youtube.com

Authorization: GoogleLogin auth=DQAAAIkAAACTK9tZPCTY1XQvXGkg4qkaIuZ1QO-Bh6-    ZyzOHuigFNC_gR4Piep4NljAjdOP4s-k7vqj-j4LdckXM9jxzlElgtaxr-    CShI1vIWkjm5ZtFsj3a9v1YqFmjIkEi3NCP2ON18D9jmXSIarPqprWiOK0n3oxznCBhm4osXwJ1yRstVVM5bG5mOlC331eMCrOKp3E


GData-Version: 2

X-GData-Key:     key=AI39si59VMkm6DATDmfG_Df6D23jfto3xRVfbAEMrFBv035pdRZ5AYMPsRXbGLCRXXnK5jz6KCSWSkuXOTrlDIIKWy7Le9fkQQ

Slug: screen.avi

Content-Type: multipart/related; boundary="d31fcjR2"

Content-length: 910273

Connection: close


* HTTP 1.0, assume close after body
< HTTP/1.0 411 Length Required

< Content-Type: text/html; charset=UTF-8

< Content-Length: 11791

< Date: Fri, 02 Sep 2011 16:09:58 GMT

< Server: GFE/2.0

< 

* Closing connection #0

Answer 1

此错误是因为我从YouTube收到的身份验证字符串最后是新的行符号，我删除它并且此错误消失了。

Answer 2

CURLOPT_POSTFIELDS将使libcurl自动添加内容长度，无需自定义内容。但是，由于您已经发送了一个内容长度标题，显然不是服务器正在讨论的缺失长度。

您的请求还会发送“连接：关闭”，因此您还没有向我们展示更多代码。

带有标题的发布请求中的错误411（长度必需），但标题具有Content-Length。的libcurl

2 个答案: