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zubairhamed / canopus

CoAP Client/Server implementing RFC 7252 for the Go Language
Apache License 2.0
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Composing URIs from Options #36

Open zubairhamed opened 9 years ago

zubairhamed commented 9 years ago
  1. If the request is secured using DTLS, let |url| be the string "coaps://". Otherwise, let |url| be the string "coap://".
    1. If the request includes a Uri-Host Option, let |host| be that option's value, where any non-ASCII characters are replaced by their corresponding percent-encoding. If |host| is not a valid reg-name or IP-literal or IPv4address, fail the algorithm. If the request does not include a Uri-Host Option, let |host| be the IP-literal (making use of the conventions of [RFC5952]) or IPv4address representing the request's destination IP address.
    2. Append |host| to |url|.
    3. If the request includes a Uri-Port Option, let |port| be that option's value. Otherwise, let |port| be the request's destination UDP port.
    4. If |port| is not the default port for the scheme, then append a single U+003A COLON character (:) followed by the decimal representation of |port| to |url|.
    5. Let |resource name| be the empty string. For each Uri-Path Option in the request, append a single character U+002F SOLIDUS (/) followed by the option's value to |resource name|, after converting any character that is not either in the "unreserved" set, in the "sub-delims" set, a U+003A COLON (:) character, or a U+0040 COMMERCIAL AT (@) character to its percent-encoded form.
    6. If |resource name| is the empty string, set it to a single character U+002F SOLIDUS (/).
    7. For each Uri-Query Option in the request, append a single character U+003F QUESTION MARK (?) (first option) or U+0026 AMPERSAND (&) (subsequent options) followed by the option's value to |resource name|, after converting any character that is not either in the "unreserved" set, in the "sub-delims" set (except U+0026 AMPERSAND (&)), a U+003A COLON (:), a U+0040 COMMERCIAL AT (@), a U+002F SOLIDUS (/), or a U+003F QUESTION MARK (?) character to its percent-encoded form.
    8. Append |resource name| to |url|.
    9. Return |url|.