Network.uploadFile怎么使用？

Cocos2d-x Lua
#1

如题这个network.uploadFile是怎么用的，主要是不明白服务器端怎么接收，前端需要和服务器端定什么协议？

#2

使用的是 HTTP POST

— Upload a file through a CCHTTPRequest instance.
– @author zrong(zengrong.net)
– Creation: 2014-04-14
– @param callback As same as the first parameter of network.createHTTPRequest.
– @param url As same as the second parameter of network.createHTTPRequest.
– @param datas Includes following values:
– fileFiledName(The input label name that type is file);
– filePath(A absolute path for a file)
– contentType(Optional, the file’s contentType, default is application/octet-stream)
– extra(Optional, the key-value table that transmit to form)
– for example:

network.uploadFile(function(evt)
        if evt.name == "completed" then
            local request = evt.request
            printf("REQUEST getResponseStatusCode() = %d", request:getResponseStatusCode())
            printf("REQUEST getResponseHeadersString() =\n%s", request:getResponseHeadersString())
             printf("REQUEST getResponseDataLength() = %d", request:getResponseDataLength())
            printf("REQUEST getResponseString() =\n%s", request:getResponseString())
        end
    end,
    "http://127.0.0.1/upload.php",
    {
        fileFieldName="filepath",
        filePath=device.writablePath.."screen.jpg",
        contentType="Image/jpeg",
        extra={
            {"act", "upload"},
            {"submit", "upload"},
        }
    }
)