Description
Quote an already supplied IPv6 address token and explicit port in a Forwarded for parameter; this is not a complete IPv6 validator.
Web protocol data has several layers: a complete message or URL, individual fields or components, and the literal tokens within them. Delimiter presence, spelling, comparison rules, and parser normalization can affect results. A check of one component needs its stated scope before it can be used in a larger parser or policy decision.
Quote an already supplied IPv6 address token and explicit port in a Forwarded for parameter; this is not a complete IPv6 validator.
When to use this tool
Use HTTP Forwarded Quoted Address Token when you need one stated URL, header, or protocol-component check in a diagnostic or parser workflow. Supply the input level specified below.
How to use the tool and how it works
- Enter address, port. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read token. Use the output convention below.
Require address to contain a colon and otherwise consist only of hexadecimal digits and colons, and require integer port from one through 65535. Return a quoted for parameter containing bracketed address followed by that port.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| address | Hexadecimal/colon lexical input containing a colon; not full IPv6 validation. | Required. Text; maximum UTF-16 length 8192. |
| port | Port | Required. Safe integer; minimum 1; maximum 65535. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| token | Token | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"address": "2001:db8::1",
"port": 443
},
"output": {
"token": "for=\"[2001:db8::1]:443\""
}
}Limitations and assumptions
- The address check is a lexical subset, not an IPv6 parser; malformed colon arrangements can pass. It does not parse Forwarded lists or establish the trustworthiness of proxy-supplied addresses.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
Alternative or Complementary methods
Use a complete URL or header parser when the task involves an entire field or message. Test actual browser, server, or cache behavior separately when a security or protocol decision depends on more than this component.
References
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