Created
June 9, 2020 17:22
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Swift JSON-RPC 2.0
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import Foundation | |
class RPCMessage: Codable { | |
var container: KeyedDecodingContainer<CodingKeys> | |
var timestamp = NSDate.now.timeIntervalSince1970 | |
var jsonrpc = "2.0" | |
var method: String? | |
var id: Int? | |
var params: [RPCParameter]? | |
var error: RPCError? | |
var result: RPCResult? | |
enum CodingKeys: CodingKey { | |
case jsonrpc, method, id, params, error, result | |
} | |
required init(from decoder: Decoder) throws { | |
self.container = try decoder.container(keyedBy: CodingKeys.self) | |
self.jsonrpc = try container.decode(String.self, forKey: .jsonrpc) | |
self.method = try container.decodeIfPresent(String.self, forKey: .method) | |
self.id = try container.decodeIfPresent(Int.self, forKey: .id) | |
self.error = try container.decodeIfPresent(RPCError.self, forKey: .error) | |
} | |
} | |
struct RPCError: Codable { | |
var code: Code? | |
var message: String? | |
enum Code: Int, Codable { | |
case parseError = -32700 | |
case invalidRequest = -32600 | |
case methodNotFound = -32601 | |
case invalidParams = -32602 | |
case internalError = -32603 | |
} | |
} | |
// inherit for method params | |
class RPCParameter: Codable {} | |
// inherit for method results | |
class RPCResult: Codable {} | |
// usage | |
let decoder = JSONDecoder() | |
let message = try decoder.decode(RPCMessage.self, from: data) | |
// decode params from request | |
if message.method != nil { | |
let params = try message.container.decode([MyParameter].self, forKey: .params) | |
} | |
// decode result from response | |
if message.method == nil { | |
let result = try message.container.decode(MyResult.self, forKey: .result) | |
} |
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