mirror of
https://github.com/node-red/node-red.git
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129 lines
4.2 KiB
JavaScript
129 lines
4.2 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require(process.env.NODE_RED_HOME+"/red/red");
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var util = require("util");
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var http = require("follow-redirects").http;
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var https = require("follow-redirects").https;
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var urllib = require("url");
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var express = require("express");
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var jsonParser = express.json();
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var urlencParser = express.urlencoded();
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function HTTPIn(n) {
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RED.nodes.createNode(this,n);
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this.url = n.url;
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this.method = n.method;
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var node = this;
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this.callback = function(req,res) {
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if (node.method == "post") { node.send({req:req,res:res,payload:req.body}); }
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else if (node.method == "get") { node.send({req:req,res:res,payload:req.query}); }
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else node.send({req:req,res:res});
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}
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if (this.method == "get") {
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RED.app.get(this.url,this.callback);
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} else if (this.method == "post") {
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RED.app.post(this.url,jsonParser,urlencParser,this.callback);
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} else if (this.method == "put") {
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RED.app.put(this.url,jsonParser,urlencParser,this.callback);
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} else if (this.method == "delete") {
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RED.app.delete(this.url,this.callback);
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}
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this.on("close",function() {
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var routes = RED.app.routes[this.method];
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for (var i in routes) {
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if (routes[i].path == this.url) {
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routes.splice(i,1);
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//break;
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}
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}
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});
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}
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RED.nodes.registerType("http in",HTTPIn);
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function HTTPOut(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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this.on("input",function(msg) {
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if (msg.res) {
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if (msg.headers) {
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msg.res.set(msg.headers);
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}
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var statusCode = msg.statusCode || 200;
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if (typeof msg.payload == "object" && !Buffer.isBuffer(msg.payload)) {
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msg.res.jsonp(statusCode,msg.payload);
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} else {
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msg.res.send(statusCode,msg.payload);
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}
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} else {
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node.warn("No response object");
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}
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});
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}
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RED.nodes.registerType("http response",HTTPOut);
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function HTTPRequest(n) {
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RED.nodes.createNode(this,n);
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var url = n.url;
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var method = n.method || "GET";
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var httplib = (/^https/.test(url))?https:http;
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var node = this;
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this.on("input",function(msg) {
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var opts = urllib.parse(msg.url||url);
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opts.method = (msg.method||method).toUpperCase();
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if (msg.headers) {
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opts.headers = msg.headers;
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}
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var req = httplib.request(opts,function(res) {
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res.setEncoding('utf8');
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msg.statusCode = res.statusCode;
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msg.headers = res.headers;
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msg.payload = "";
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res.on('data',function(chunk) {
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msg.payload += chunk;
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});
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res.on('end',function() {
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node.send(msg);
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});
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});
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req.on('error',function(err) {
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msg.payload = err.toString();
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msg.statusCode = err.code;
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node.send(msg);
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});
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if (msg.payload && (method == "POST" || method == "PUT") ) {
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if (typeof msg.payload === "string" || Buffer.isBuffer(msg.payload)) {
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req.write(msg.payload);
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} else if (typeof msg.payload == "number") {
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req.write(msg.payload+"");
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} else {
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req.write(JSON.stringify(msg.payload));
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}
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}
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req.end();
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});
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}
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RED.nodes.registerType("http request",HTTPRequest);
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