Validates domain names according to RFC standards, checking for proper format, length restrictions, and character requirements. Supports both Unicode and ASCII domain names.
Usage
validate_domain(x, strict = getOption("punycoder.strict", TRUE))Value
An object of class "punycoder_validation" (a named list)
with components:
- domains
Character vector of the input domain names.
- valid
Logical vector indicating whether each domain is valid.
- errors
List of character vectors, each containing error messages for the corresponding domain (empty for valid domains).
- error_codes
List of character vectors, each containing stable machine-readable error codes for the corresponding domain (empty for valid domains). Missing input uses
"domain_na".
See also
puny_encode for encoding validated domains.
Examples
validate_domain("example.com")
#> Punycoder Domain Validation Results
#> ==================================
#>
#> 1 domain: 1 valid, 0 invalid (strict = TRUE)
#>
#> Domain: example.com
#> Valid: TRUE
#>
validate_domain("caf\u00E9.example.com")
#> Punycoder Domain Validation Results
#> ==================================
#>
#> 1 domain: 1 valid, 0 invalid (strict = TRUE)
#>
#> Domain: café.example.com
#> Valid: TRUE
#>
long_label <- paste(rep("x", 250), collapse = "")
validate_domain(c("valid.com", "invalid..com", long_label))
#> Punycoder Domain Validation Results
#> ==================================
#>
#> 3 domains: 1 valid, 2 invalid (strict = TRUE)
#>
#> Domain: valid.com
#> Valid: TRUE
#>
#> Domain: invalid..com
#> Valid: FALSE
#> Errors:
#> - Domain contains empty label [domain_empty_label]
#>
#> Domain: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
#> Valid: FALSE
#> Errors:
#> - Domain label too long (max 63 characters) [domain_label_too_long]
#>