requestOptionNumber (property)
The option's number.
Syntax
- (int)requestOptionNumber:(int)requestOptionIndex; - (void)setRequestOptionNumber:(int)requestOptionIndex:(int)newRequestOptionNumber;
public func requestOptionNumber(requestOptionIndex: Int32) throws -> Int32
public func setRequestOptionNumber(requestOptionIndex: Int32, newRequestOptionNumber: Int32) throws -> Void
Default Value
0
Remarks
The option's number.
The property reflects the option's number, which must be a value in the range 0 to 65535 (inclusive). Setting this property to a recognized option number (see table below) will automatically set the RequestOptionValueType property to the correct value (it should be set manually otherwise).
The following table provides a (non-exhaustive) list of some of the more common option numbers; refer to the IANA's CoAP Option Numbers registry for a full list.
| Number | Option |
| 1 | If-Match |
| 3 | Uri-Host |
| 4 | ETag |
| 5 | If-None-Match |
| 6 | Observe |
| 7 | Uri-Port |
| 8 | Location-Path |
| 11 | Uri-Path |
| 12 | Content-Format |
| 14 | Max-Age |
| 15 | Uri-Query |
| 17 | Accept |
| 20 | Location-Query |
| 23 | Block2 |
| 27 | Block1 |
| 35 | Proxy-Uri |
| 39 | Proxy-Scheme |
| 60 | Size1 |
The RequestOptionIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RequestOptionCount property.