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bartbutenaers
2017-03-04 10:11:58 +01:00
committed by Nick O'Leary
parent f215970649
commit e3b052bc38
1 changed files with 125 additions and 22 deletions
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147
nodes/core/io/21-httprequest.js
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@@ -25,6 +25,7 @@ module.exports = function(RED) {
function HTTPRequest(n) {
RED.nodes.createNode(this,n);
var node = this;
var req;
var nodeUrl = n.url;
var isTemplatedUrl = (nodeUrl||"").indexOf("{{") != -1;
var nodeMethod = n.method || "GET";
@@ -41,7 +42,32 @@ module.exports = function(RED) {
if (process.env.no_proxy != null) { noprox = process.env.no_proxy.split(","); }
if (process.env.NO_PROXY != null) { noprox = process.env.NO_PROXY.split(","); }
function handleMsg(msg) {
if (node.metric()) {
// Calculate request time
var diff = process.hrtime(preRequestTimestamp);
var ms = diff[0] * 1e3 + diff[1] * 1e-6;
var metricRequestDurationMillis = ms.toFixed(3);
node.metric("duration.millis", msg, metricRequestDurationMillis);
if (res.client && res.client.bytesRead) {
node.metric("size.bytes", msg, res.client.bytesRead);
}
}
if (node.ret === "txt") {
msg.payload = msg.payload.toString();
}
else if (node.ret === "obj") {
try { msg.payload = JSON.parse(msg.payload); }
catch(e) { node.warn(RED._("httpin.errors.json-error")); }
}
node.send(msg);
node.status({});
}
this.on("input",function(msg) {
var boundary = "";
var chunkBuffer = Buffer.from('');
var headerBodySeparator = "";
var preRequestTimestamp = process.hrtime();
node.status({fill:"blue",shape:"dot",text:"httpin.status.requesting"});
var url = nodeUrl || msg.url;
@@ -79,6 +105,7 @@ module.exports = function(RED) {
var opts = urllib.parse(url);
opts.method = method;
opts.headers = {};
opts.encoding = null; // response body should be buffer, not string
var ctSet = "Content-Type"; // set default camel case
var clSet = "Content-Length";
if (msg.headers) {
@@ -160,36 +187,111 @@ module.exports = function(RED) {
if (tlsNode) {
tlsNode.addTLSOptions(opts);
}
var req = ((/^https/.test(urltotest))?https:http).request(opts,function(res) {
(node.ret === "bin") ? res.setEncoding('binary') : res.setEncoding('utf8');
if (req) {
req.abort();
}
req = ((/^https/.test(urltotest))?https:http).request(opts,function(res) {
//(node.ret === "bin") ? res.setEncoding('binary') : res.setEncoding('utf8');
msg.statusCode = res.statusCode;
msg.headers = res.headers;
msg.responseUrl = res.responseUrl;
msg.payload = "";
msg.payload = Buffer.from('');
// msg.url = url; // revert when warning above finally removed
res.setEncoding(null);
delete res._readableState.decoder;
res.on('data',function(chunk) {
msg.payload += chunk;
});
res.on('end',function() {
if (node.metric()) {
// Calculate request time
var diff = process.hrtime(preRequestTimestamp);
var ms = diff[0] * 1e3 + diff[1] * 1e-6;
var metricRequestDurationMillis = ms.toFixed(3);
node.metric("duration.millis", msg, metricRequestDurationMillis);
if (res.client && res.client.bytesRead) {
node.metric("size.bytes", msg, res.client.bytesRead);
var nextPart = 0;
if (!boundary) {
var contentType = this.headers['content-type'];
if (contentType) {
// Automatically check whether multipart streaming is required
if (/multipart/.test(contentType)) {
// Automatically detect the required boundary (that will be used between parts of the stream)
boundary = (contentType.match(/.*;\sboundary=(.*)/) || [null, null])[1];
if(!boundary) {
node.error(RED._("httpin.errors.no-boundary"),msg);
return;
}
// A boundary needs to start with -- (even if not specified in the http header variable)
if (!boundary.startsWith('--')) {
boundary = '--' + boundary;
}
// Every part contains of headers and a body (content) separated by two EOL (end of line) symbols.
// The end of line can be LF (linefeed \n), CR (carriage return \r), CRLF (carriage return linefeed \r\n).
// When the stream starts, the EOL should be determined.
var eolSymbols = (chunk.toString().match(/(?:\r\r|\n\n|\r\n\r\n)/g) || []);
if (eolSymbols.indexOf('\r\n\r\n') >= 0) {
headerBodySeparator = '\r\n\r\n';
}
else if (eolSymbols.indexOf('\r\r') >= 0) {
headerBodySeparator = '\r\r';
}
else if (eolSymbols.indexOf('\n\n') >= 0) {
headerBodySeparator = '\n\n';
}
if(!headerBodySeparator) {
node.error(RED._("httpin.errors.no-separator"),msg);
return;
}
}
}
}
if (node.ret === "bin") {
msg.payload = new Buffer(msg.payload,"binary");
// Append the chunk to other (non-processed) chunk data
chunkBuffer = Buffer.concat([chunkBuffer, chunk]);
chunk = null;
if (boundary) {
while(true) {
// Parts are separated by boundaries, so try to isolate parts in the received chunks.
var bodyEnd = chunkBuffer.indexOf(boundary, nextPart);
if (bodyEnd == -1) {
// Store the remaining (incomplete) part in the chunk buffer, to be processed when the next chunk arrives
chunkBuffer = chunkBuffer.slice(nextPart, chunkBuffer.length);
break;
}
nextPart = bodyEnd + boundary.length;
// Find the part body (that arrives after the part header)
// The header 'Content length' is optional, so it cannot be used here
var bodyStart = chunkBuffer.indexOf(headerBodySeparator) + headerBodySeparator.length;
// Trim optional CR or LF characters at the start of the body
for (var i = bodyStart; i <= bodyEnd; i++) {
if (chunkBuffer[i] !== '\n' && chunkBuffer[i] !== '\r') {
break;
}
bodyStart++;
}
// Trim optional CR or LF characters at the end of the body
for (var i = bodyEnd - 1; i >= bodyStart; i--) {
if (chunkBuffer[i] !== '\n' && chunkBuffer[i] !== '\r') {
break;
}
bodyEnd--;
}
if (bodyEnd - bodyStart > 0) {
// Send the body to the output port of this node
msg.payload = chunkBuffer.slice(bodyStart, bodyEnd);
handleMsg(msg);
}
}
}
else if (node.ret === "obj") {
try { msg.payload = JSON.parse(msg.payload); }
catch(e) { node.warn(RED._("httpin.errors.json-error")); }
}
node.send(msg);
node.status({});
});
res.on('end',function() {
handleMsg(msg);
});
});
req.setTimeout(node.reqTimeout, function() {
@@ -224,3 +326,4 @@ module.exports = function(RED) {
}
});
}