Transfer large files using HTTP/POST

问题:

How can I upload (very) large file with HTTP protocol in C (or C++)?

I know it's not the right way to upload huge files, but that's not the point.

I've already seen sources about POST transfers of files in C++ but I noticed that, each time, the WHOLE binary file was included inside the POST sequence (between "--boundary").

So, before going deeper and deeper into Webkit/Gecko source code, does somebody know how do they do?

回答1:

You may use "Content-Range" header in HTTP POST request, to upload a slice of a huge file.

POST http://[server_ip]:80/upload?fn=xx.dat HTTP/1.1
Content-Range: bytes=0-4095
Content-Type: application/octet-stream
Content-Length: 4096

......

回答2:

You can use chunking method to send the data in chunks. This will allow you to send/receive data on a larger scale. Refer to RFC 2616 on how chunking really works.