使用逗号重定向到网址

Question

我正在尝试使用flask：http://nachbarschaft.immobilienscout24.de/adressen/bayern,muenchen,haidhausen/dienstleistung/friseur-blatter-hauptverwaltung,66512592.html

为此网站的网址编写重定向

我使用的代码：

@app.route('/api/redirect', methods=['GET'])
def redirect_link():
    url = request.values.get('url')
    return redirect(url)

问题在于，目标网站不会将%2C解码为,，而是解码为-并提供404 Not Found。

有什么方法吗？

带卷曲的标题：

curl -IL http://XXXXXX/api/redirect?url=http%3A%2F%2Fnachbarschaft.immobilienscout24.de%2Fadressen%2Fbayern%2Cmuenchen%2Chaidhausen%2Fdienstleistung%2Ffriseur-blatter-hauptverwaltung%2C66512592.html
    HTTP/1.1 302 FOUND
    Server: gunicorn/18.0
    Date: Wed, 11 Dec 2013 12:58:26 GMT
    Connection: keep-alive
    Content-Type: text/html; charset=utf-8
    Content-Length: 489
    Location: http://nachbarschaft.immobilienscout24.de/adressen/bayern%2Cmuenchen%2Chaidhausen/dienstleistung/friseur-blatter-hauptverwaltung%2C66512592.html

    HTTP/1.1 301 Moved Permanently
    Date: Wed, 11 Dec 2013 12:58:27 GMT
    Location: /adressen/bayern-muenchen-haidhausen/dienstleistung/friseur-blatter-hauptverwaltung-66512592.html
    Vary: Accept-Encoding
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: no-sniff
    Cache-Control: max-age=604800, private, must-revalidate
    Content-Type: text/html; charset=UTF-8
    Set-Cookie: TS8a1db5=ea90e6be799ade80c5c84f3cca057558d12f3da1cca67c5a52a86172; Path=/
    Transfer-Encoding: chunked

    HTTP/1.1 404 Not Found
    Date: Wed, 11 Dec 2013 12:58:27 GMT
    Vary: Accept-Encoding
    X-Frame-Options: SAMEORIGIN
    X-Content-Type-Options: no-sniff
    Cache-Control: max-age=604800, private, must-revalidate
    Content-Type: text/html; charset=UTF-8
    Set-Cookie: TS8a1db5=61dcb89e16f8fe72a87d5e1f1faf7b0e82cbf7e476e5a3ff52a86172; Path=/
    Transfer-Encoding: chunked