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PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
 

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  1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
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    <p>I am working through the Udacity course on web app development using Python and Google App Engine. During a lesson on setting cookies (to count visitor count) and hashing I noticed something that is confusing me:</p> <p>For fun I decided to print out the cookie value of 'visits' before and after adding 1 more visit. Here is the output: </p> <pre><code>5|e4da3b7fbbce2345d7772b0674a318d5 [[[this is cookie before adding 1 to it]] You've been here 6 times! [[this is printed after adding 1 to cookie, but is not the cookie]] 5|e4da3b7fbbce2345d7772b0674a318d5 [[this is printing the cookie after one has been set using "Set-Cookie"]] </code></pre> <p>The 6 in the middle line is correct. Using a cookie viewer I have verified that it matches the cookie. So the "5" in the first line is also correct (because this line is reading the cookie before 1 was added).</p> <p>What is confusing me is that I also print out the cookie value AFTER adding 1, and it's STILL prints "5" -- even though the cookie has already been reset to 6.</p> <p>Why is that? Does the browser need to be refreshed before the new cookie is read correctly or something? </p> <p>Here is the code in question: class CookiePage(BlogHandler): def get(self): self.response.headers['Content-Type'] = 'text/plain' visits = 0 visits_cookie_str = self.request.cookies.get('visits') self.write(visits_cookie_str) # this is the first line printed self.write("\n")</p> <pre><code> if visits_cookie_str: cookie_val = check_secure_val(visits_cookie_str) visits = int(cookie_val) visits += 1 new_cookie_val = make_secure_val(str(visits)) self.response.headers.add_header('Set-Cookie', 'visits=%s' % new_cookie_val) self.write("You've been here %s times!\n" % visits) # this is the 2nd line printed cookie = self.request.cookies.get('visits') self.write(cookie) # this is the 3rd line printed which SHOULD match the one above it but doesn't </code></pre>
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    1. USBandfuzzAlex
    1. USBandfuzzAlex
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      1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
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      1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
      1. USSimon K Bhatta4ya
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    1. COHow are you setting the cookie? Via Javascript or on the server? Also, can you show us some actual code?
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      1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
      1. USMichael Mior
    2. COIt's being set using Python and Google App Engine. I will update my question with the code.
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      1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
      1. USBandfuzzAlex
    3. COSee my updated answer.
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      1. PODoes browser need to be refreshed to see new cookie? Confusing issue I've noticed
      1. USMichael Mior
 

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