outgoingMessage.addTrailers(headers)

• headers <Object>

添加 HTTP 尾标（标头，但在消息末尾）到消息。

🌐 Adds HTTP trailers (headers but at the end of the message) to the message.

只有在消息使用分块编码时，才会发送尾部信息。如果不是，尾部信息将被静默丢弃。

🌐 Trailers will only be emitted if the message is chunked encoded. If not, the trailers will be silently discarded.

HTTP 要求发送 Trailer 头以发出尾部信息，其值中包含一个头字段名称的列表，例如。

🌐 HTTP requires the Trailer header to be sent to emit trailers, with a list of header field names in its value, e.g.

message.writeHead(200, { 'Content-Type': 'text/plain',
                         'Trailer': 'Content-MD5' });
message.write(fileData);
message.addTrailers({ 'Content-MD5': '7895bf4b8828b55ceaf47747b4bca667' });
message.end(); 拷贝

尝试设置包含无效字符的头字段名称或值将导致抛出 TypeError。

🌐 Attempting to set a header field name or value that contains invalid characters will result in a TypeError being thrown.