in lib/http/node.js [65:80]
writeBody: function writeBody(stream, httpRequest) {
var body = httpRequest.body;
if (body && WritableStream && ReadableStream) { // progress support
if (!(body instanceof Stream)) body = this.bufferToStream(body);
body.pipe(this.progressStream(stream, httpRequest));
}
if (body instanceof Stream) {
body.pipe(stream);
} else if (body) {
stream.end(body);
} else {
stream.end();
}
},