内容类型的标题属性值引用不使用第三方服务器
引用内容类型标头的边界属性值是正确的吗?
我已经向第三方服务器发送了一个带有两个文件的http-
requrest
因为RESTSHARP引用边界值,但服务器不会删除它。我既不能更改第三方服务器,也不能自定义RESTSHARP标头引用。
问题是什么? HTTP规格是否允许在标头属性值中逃脱字符串?我已经阅读了规格,但还没有找到明确定义的地方。
我创建了类似的restrequest:
private RestRequest CreateRequest( ... )
{
var request_url = $"url?param=value";
var request = new RestRequest( request_url, Method.Post );
request.AddFile( "file1", ..., "file1", "application/xml" );
request.AddFile( "file2", ..., "file2", "audio/x-wav" );
request.AddHeader( "Content-Type", "multipart/form-data" );
return request;
}
并获得以下http-requelquest:
POST /url?param=value
Host: 192.168.1.1:80
Accept: application/json, text/json, text/x-json, text/javascript, application/xml, text/xml
User-Agent: RestSharp/108.0.1.0
Accept-Encoding: gzip, deflate, br
Content-Type: multipart/form-data; boundary="38b14895-fd44-4acc-8287-9f0378691da2"
Content-Length: 227841
--38b14895-fd44-4acc-8287-9f0378691da2
Content-Type: application/xml
Content-Disposition: form-data; name="file1"; filename="file1"
[data]
--38b14895-fd44-4acc-8287-9f0378691da2
Content-Type: audio/x-wav
Content-Disposition: form-data; name="file2"; filename="file2"
[data]
--38b14895-fd44-4acc-8287-9f0378691da2--
Is it correct to quote the boundary property value of Content-Type header?
I have sent an http-request with two files to a third-party server and get the following response:
Boundary '--"38b14895-fd44-4acc-8287-9f0378691da2"' not found in message body
because RestSharp quotes the boundary value, but the server doesn't unquote it. I can neither change the third-party server nor customize RestSharp header quoting.
What is the problem? Does the http spec allow escaped strings in header property values? I've read the spec, but haven't found a place where this would be explicitly defined.
I create the RestRequest something like this:
private RestRequest CreateRequest( ... )
{
var request_url = quot;url?param=value";
var request = new RestRequest( request_url, Method.Post );
request.AddFile( "file1", ..., "file1", "application/xml" );
request.AddFile( "file2", ..., "file2", "audio/x-wav" );
request.AddHeader( "Content-Type", "multipart/form-data" );
return request;
}
and get the following HTTP-request:
POST /url?param=value
Host: 192.168.1.1:80
Accept: application/json, text/json, text/x-json, text/javascript, application/xml, text/xml
User-Agent: RestSharp/108.0.1.0
Accept-Encoding: gzip, deflate, br
Content-Type: multipart/form-data; boundary="38b14895-fd44-4acc-8287-9f0378691da2"
Content-Length: 227841
--38b14895-fd44-4acc-8287-9f0378691da2
Content-Type: application/xml
Content-Disposition: form-data; name="file1"; filename="file1"
[data]
--38b14895-fd44-4acc-8287-9f0378691da2
Content-Type: audio/x-wav
Content-Disposition: form-data; name="file2"; filename="file2"
[data]
--38b14895-fd44-4acc-8287-9f0378691da2--
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好的,所以我刚刚处理一个非常相似的问题。我发现这个 github问题,在这里发生了一些良好的上下文但是我也找到了解决方案。
首先,您不应该手动添加“内容类型”标头。 RestSharp将为您执行此操作,因为您正在使用addfile()方法。
我假设您正在使用最新版本的RestSharp,如果可以的话,您可以设置请求。RESTREQUEST的ONBEFOREREQUEST属性处理此请求并在发送请求之前剥离边界周围的双引号:
希望这会有所帮助!
Okay so I have just been dealing with a very similar issue. I found this GitHub Issue which gives some good context into the actual issue that is occurring here but I have also found a fix.
Firstly, you shouldn't manually add the "Content-Type" header. RestSharp will do this for you since you are using the AddFile() method.
I am assuming you are using the latest version of RestSharp, if so you can set the request.OnBeforeRequest property of the RestRequest to handle this and strip out the double quotes around the boundary before the request is sent:
Hope this helps!