PHP Classes

File: examples/jsonrpcClient.js

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  Classes of Chris Jeffries   PHP JSON RPC 2.0 Server   examples/jsonrpcClient.js   Download  
File: examples/jsonrpcClient.js
Role: Auxiliary data
Content type: text/plain
Description: Implements the AJAX client (in ECMAScript6)
Class: PHP JSON RPC 2.0 Server
Handle to HTTP requests in JSON RPC v2.0 format
Author: By
Last change:
Date: 5 years ago
Size: 2,133 bytes


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/*** * rpcjson() - promise to retrieve data from an RPC-JSON Server * * Designed specifically to work with rpcJSONserver.class.php. Expects a * request in RPC-JSON format and returns * the server response as a Javascript object to the function specified * in the .then method, or returns an error response in the .catch * method. * * @param text url The location of the server (typically index.php) * @param text/int id the identity of the request. Either an * integer or a string NOT starting with a * number * @param text method the name of the method to be invoked as * filename.classname.methodname * @param object params The parameters to be passed to the method * * @returns promise the .then call will receive the data * returned by the method. * the .catch call will receive an error * object formatted according to the RPC-JSON * v2.0 specification. ***/ function jsonrpcClient(url, id, method, parameters) { let key, request, p, k; request = {"jsonrpc":"2.0", "id":id, "method":method, "params":parameters}; p = new Promise(function (resolve, reject){ //retrieve data from server based on a spec using json format let xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4) { if (this.status == 200) { let response = JSON.parse(xhttp.responseText); if (response.result != undefined) { resolve(response) } else { reject(response); } } else { let response = {}; = null; response.jsonrpc = "2.0"; response.error = { "error":'XHTTP:'+ this.status + ":" + xhttp.responseText}; response.errorNum = '-31099'; reject(response); } } };"POST", url, true); xhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); xhttp.send('data='+JSON.stringify(request)); }); return p; }