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Connection.scala
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Connection.scala
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/*
* Copyright 2013 http4s.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.http4s
package headers
import cats.data.NonEmptyList
import cats.syntax.all._
import org.http4s.internal.parsing.CommonRules
import org.http4s.internal.parsing.Rfc2616
import org.typelevel.ci._
// values should be case insensitive
//http://stackoverflow.com/questions/10953635/are-the-http-connection-header-values-case-sensitive
object Connection {
def apply(head: CIString, tail: CIString*): `Connection` =
apply(NonEmptyList(head, tail.toList))
def parse(s: String): ParseResult[Connection] =
ParseResult.fromParser(parser, "Invalid Connection header")(s)
val close: Connection = Connection(ci"close")
private[http4s] val parser =
CommonRules.headerRep1(Rfc2616.token).map { (xs: NonEmptyList[String]) =>
Connection(CIString(xs.head), xs.tail.map(CIString(_)): _*)
}
implicit val headerInstance: Header[Connection, Header.Recurring] =
Header.createRendered(
ci"Connection",
_.values,
parse,
)
implicit val headerSemigroupInstance: cats.Semigroup[Connection] =
(a, b) => Connection(a.values.concatNel(b.values))
}
final case class Connection(values: NonEmptyList[CIString]) {
def hasClose: Boolean = values.contains_(ci"close")
def hasKeepAlive: Boolean = values.contains_(ci"keep-alive")
def hasUpgrade: Boolean = values.contains_(ci"upgrade")
}