通过Node.js的http.ServerResponse发送二进制缓冲区客户端 [英] Send a binary Buffer to client through http.ServerResponse in Node.js

问题描述

我在缓冲区对象的二进制数据（如图像文件）（而非文件），并希望通过http.ServerResponse服务于原始的二进制数据的客户端。
我该怎么办呢？

I have a binary data(like image file) in Buffer object(not file), and want to serve the raw binary data to client through http.ServerResponse. How can I do it ?

推荐答案

我设法找出答案。只需添加二进制编码都写（）和end（）。

I managed to find out the answer. Just add "binary" encoding to both write() and end().

    res.write(buffer,'binary');
    res.end(null, 'binary');

请注意，这两个写和结束功能需要指定的二进制编码。否则，缓冲区EN codeD为UTF-8。
（所以，JPEG头FF FF D8 E0将是C3 BF C3 98 C3 BF C3 A0......）

Note that both "write" and "end" function requires the 'binary' encoding specified. Otherwise, the buffer is encoded as UTF-8. (So, JPEG header "ff d8 ff e0" will be "c3 bf c3 98 c3 bf c3 a0"...)

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