Swift

Get a Header Field by Name

Demonstrates the Chilkat Email.GetHeaderField method, which returns the value of a header field by name. Header-field names are case-insensitive, so X-Priority and x-priority refer to the same field. This example reads several headers by name.

Background: Looking up a header by name is the quickest way to read a known field like Subject or a custom X- header. One caveat: some header names (such as Received) can legitimately appear more than once. When a field may repeat and you need every occurrence, enumerate by index with GetHeaderFieldName and GetHeaderFieldValue instead of looking up by name.

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Swift


func chilkatTest() {
    //  Demonstrates the GetHeaderField method, which returns the value of a header field by
    //  name.  Header-field names are case-insensitive.

    let email = CkoEmail()!
    email.subject = "Quarterly report"
    email.from = "alice@example.com"
    email.addHeaderField(fieldName: "X-Priority", fieldValue: "1")

    //  Get header field values by name.
    print("Subject = \(email.getHeaderField(fieldName: "Subject")!)")
    print("From = \(email.getHeaderField(fieldName: "From")!)")
    print("X-Priority = \(email.getHeaderField(fieldName: "x-priority")!)")

}