How to test URI query string length?

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In various places within the developer documentation (error-codes, REST API exception and error handling) we are advised:

414 will be returned when the URI of a GET request exceeds 8KB. To avoid it, check against the length of your query string to see if it exceeds this limit.

How do I check the length of a URI GET request query string in C# to avoid a 414 error?

Marketo

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SanfordWhitemanAccepted solution

Level 10

Umm String.Length?

Of course you can wrap this in a method of a class that extends your HTTP library (whatever that is) as .ensureMaxLength() or whatever.

Not really a Marketo question.

SanfordWhitemanAccepted solution

Level 10

Umm String.Length?

Of course you can wrap this in a method of a class that extends your HTTP library (whatever that is) as .ensureMaxLength() or whatever.

Not really a Marketo question.

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Mike_DinnisAuthor

Level 2

String.Length will return the number of characters in a string and not the size e.g. 8KB. Am I missing something here?

I agree that this isn't really a Marketo question, but since it's advocated as best practice in a few places I thought someone would know the best way to do this.

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SanfordWhiteman

Level 10

A URL-encoded String is ASCII. Every internal char in the string becomes 1 byte wide on the wire, e.g. %20 is 3 bytes.

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