错误411(长度要求)的post请求与标头,但标头具有Content-Length.libCurl



我使用以下选项:

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post request with header。在header变量中有长度

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

我想做的是上传视频到YouTube,我使用他们的手册

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>

也许我必须使用一些其他的CURLoptions?

更新:当我设置

curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);

我也收到

* 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

这个错误是因为在我从YouTube收到的身份验证字符串中,末尾是新的行符号,我擦除它,这个错误消失了。

CURLOPT_POSTFIELDS将使内容长度由libcurl自动添加,无需自定义。然而,由于您已经发送了一个内容长度的头显然不是服务器正在谈论的缺失长度。

您的请求还发送了一个"Connection: close",所以还有更多的代码您没有向我们展示。

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