Master Puzzle IIS Log "200 0 64"

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Today, a friend asked me what the last three "200 0 64" in the IIS log meant, said check the night also did not know what this means, the Internet basically all the back of this "64" and Baidu linked ~ said here is "200 0 64" is not normal crawl, only "200 0 0" is the normal crawl ... , I opened GG search for a moment, "200 0 64", and sure enough, even gave a solution, said how to modify the site can make "200 0 64" into "200 0 0" to let the search engine normal crawl ...

I sweat, do not know how many people have been published this part of the sophistry of the bad people to the original good site to change. In fact, this is only 3 normal status code, only the front of the "200" this useful, the following "0 64" and whether the normal access or normal crawl has no relationship! Here is a detailed explanation of these three status codes.

To open a log of IIS, we can see a header on the top of the third line, like this:

Reference content

#Fields: Date Time s-sitename s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username C-IP cs (user) Sc-status sc- Substatus Sc-win32-status

This is the name of each field in each line of the log, and the "200 0 64" We see is the last 3, and that is

Sc-status Sc-substatus Sc-win32-status These three, to see what these three are:

Sc-status:

The status of the HTTP protocol. The status code for the HTTP protocol is 200, this may be unfamiliar to everyone, but, HTTP404 can't find the file, HTTP500 internal server error, these two status code you should be familiar with it? Yes, this 200, in fact, is a kind of this, HTTP200 is the file is normal access, only this number is 200 other than the number, only to show that access errors (such as the above 404 files can not find, etc.).

Sc-substatus:

The status of the HTTP child Protocol. Generally speaking, the website does not use the sub-protocol, so this code is 0 is very normal, we can not control it.

Sc-win32-status:

Win32 state. This is a lot of people explain whether vehicular is Baidu normal crawl code. In addition to this explanation, this code also has n various explanations, some say is "not to use, cannot open", some say is "The client delivers to the service side byte size", really is the hype. Actually, we know a little bit about the brain, You can read it literally. This is only code that indicates whether the client is a 32-bit system. If the 32-bit system is accessed, then the record is 0, and if it is accessed by 64-bit systems, then this record is 64 ...

Summing up the above, and then a comprehensive explanation of "200 0 64" and "200 0 0":

200 0 64:

The file is normally accessed or crawled by a 64-bit system visitor or spider.

200 0 0:

The file is normally accessed or crawled by a 32-bit system visitor or spider.

PostScript:

It's such a simple question, why are there so many versions of the skew, and there are so many people to believe it?

Perhaps webmaster are too sensitive to Baidu, for the possibility of bad results, would rather believe that it is not willing to believe that the psychological cause.

Or, it is the truth of people's mind that the sophistry has been said by many people.

In addition to the webmaster need to calm thinking and learning, finally also hope that you are not very sure of things, do not randomly with their own imagination to express their views, for yourself, you may just think that you have published a view, but you can imagine the results, do not know how many people to mislead, How many people are going to cause trouble.

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