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  • // Copyright 2015 The go-ethereum Authors
    // This file is part of the go-ethereum library.
    //
    // The go-ethereum library is free software: you can redistribute it and/or modify
    // it under the terms of the GNU Lesser General Public License as published by
    // the Free Software Foundation, either version 3 of the License, or
    // (at your option) any later version.
    //
    // The go-ethereum library is distributed in the hope that it will be useful,
    // but WITHOUT ANY WARRANTY; without even the implied warranty of
    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    // GNU Lesser General Public License for more details.
    //
    // You should have received a copy of the GNU Lesser General Public License
    // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    
    
    
    import "fmt"
    
    // request is for an unknown service
    type methodNotFoundError struct {
    	service string
    	method  string
    }
    
    
    func (e *methodNotFoundError) ErrorCode() int { return -32601 }
    
    
    func (e *methodNotFoundError) Error() string {
    	return fmt.Sprintf("The method %s%s%s does not exist/is not available", e.service, serviceMethodSeparator, e.method)
    }
    
    // received message isn't a valid request
    
    type invalidRequestError struct{ message string }
    
    func (e *invalidRequestError) ErrorCode() int { return -32600 }
    
    func (e *invalidRequestError) Error() string { return e.message }
    
    
    // received message is invalid
    
    type invalidMessageError struct{ message string }
    
    func (e *invalidMessageError) ErrorCode() int { return -32700 }
    
    func (e *invalidMessageError) Error() string { return e.message }
    
    
    // unable to decode supplied params, or an invalid number of parameters
    
    type invalidParamsError struct{ message string }
    
    func (e *invalidParamsError) ErrorCode() int { return -32602 }
    
    func (e *invalidParamsError) Error() string { return e.message }
    
    
    // logic error, callback returned an error
    
    type callbackError struct{ message string }
    
    func (e *callbackError) ErrorCode() int { return -32000 }
    
    func (e *callbackError) Error() string { return e.message }
    
    
    // issued when a request is received after the server is issued to stop.
    
    type shutdownError struct{}
    
    func (e *shutdownError) ErrorCode() int { return -32000 }
    
    func (e *shutdownError) Error() string { return "server is shutting down" }