Convert client requests to proper requests for custom highchart node export server-CodePudding

Im trying to export images by a custom node export server. server is running and when I send requests directly to server everything is fine.

    exporting: {
    url: "http://ip:7779"
},

But for some security reasons first I need to send request to my flask server, I checked incoming request and it contain this values:

CombinedMultiDict([ImmutableMultiDict([]), ImmutableMultiDict([('width', u'0'), ('scale', u'2'), ('type', u'image/png'), ('filename', u'chart'), ('svg', u'<svg xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1"  ...omited!')])

and content type is like multipart/form-data; boundary=----WebKitFormBoundaryt7Gcilm12pNBmSab

so I changed my code:

    url: "/highchart"
},

@app.route('/highchart', methods=["GET", "POST"])
@login_required
def highchart_export():
    try:
        data = {}
        for i in request.values:
            data[i] = request.values[i]
        response = requests.post('http://0.0.0.0:7779',data=data)
        return response.text, response.status_code, response.headers.items()
    except:
        print traceback.format_exc(sys.exc_info())

But it not work. I just get an image with text "It appears that we don't support this file format."

CodePudding user response：

It seems in my code some headers and part of body is missing so for a clean redirect I used this code:

response = requests.request(
    method=request.method,
    url='http://127.0.0.1:7779',
    headers={key: value for (key, value) in request.headers},
    data=request.get_data(),
    cookies=request.cookies,
    allow_redirects=False)
headers = [(name, value) for (name, value) in response.raw.headers.items()]
return Response(response.content, response.status_code, headers)

And now output is fine.