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Add TCP request node to TCP node "family"

This commit is contained in:
Dave C-J 2014-07-08 13:45:00 +01:00
parent 2c5d5148b8
commit c10c687653
2 changed files with 198 additions and 15 deletions
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101
nodes/core/io/31-tcpin.html
View File

@ -23,13 +23,13 @@
</select>
port <input type="text" id="node-input-port" style="width: 50px">
</div>
<div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
<div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
at host <input type="text" id="node-input-host" placeholder="localhost" style="width: 40%;">
</div>
<div class="form-row">
<label><i class="icon-th"></i> Output</label>
a
a
<select id="node-input-datamode" style="width:110px;">
<option value="stream">stream of</option>
<option value="single">single</option>
@ -45,7 +45,7 @@
<div id="node-row-newline" class="form-row hidden" style="padding-left: 110px;">
delimited by <input type="text" id="node-input-newline" style="width: 110px;">
</div>
<div class="form-row">
<label for="node-input-topic"><i class="icon-tasks"></i> Topic</label>
<input type="text" id="node-input-topic" placeholder="Topic">
@ -57,8 +57,8 @@
</script>
<script type="text/x-red" data-help-name="tcp in">
<p>Provides a choice of tcp inputs. Can either connect to a remote tcp port,
or accept incoming connections.</p>
<p>Provides a choice of tcp inputs. Can either connect to a remote tcp port,
or accept incoming connections.</p>
</script>
<script type="text/javascript">
@ -115,6 +115,7 @@
});
</script>
<script type="text/x-red" data-template-name="tcp out">
<div class="form-row">
<label for="node-input-beserver"><i class="icon-resize-small"></i> Type</label>
@ -125,8 +126,8 @@
</select>
<span id="node-input-port-row">port <input type="text" id="node-input-port" style="width: 50px"></span>
</div>
<div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
<div class="form-row hidden" id="node-input-host-row" style="padding-left: 110px;">
at host <input type="text" id="node-input-host" placeholder="localhost" style="width: 40%;">
</div>
@ -135,7 +136,7 @@
<input type="checkbox" id="node-input-base64" placeholder="base64" style="display: inline-block; width: auto; vertical-align: top;">
<label for="node-input-base64" style="width: 70%;">Decode Base64 message ?</label>
</div>
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
@ -143,12 +144,12 @@
</script>
<script type="text/x-red" data-help-name="tcp out">
<p>Provides a choice of tcp outputs. Can either connect to a remote tcp port,
<p>Provides a choice of tcp outputs. Can either connect to a remote tcp port,
accept incoming connections, or reply to messages received from a TCP In node.</p>
<p>Only <b>msg.payload</b> is sent.</p>
<p>If <b>msg.payload</b> is a string containing a base64 encoding of binary
data, the Base64 decoding option will cause it to be converted back to binary
before being sent.</p>
<p>Only <b>msg.payload</b> is sent.</p>
<p>If <b>msg.payload</b> is a string containing a base64 encoding of binary
data, the Base64 decoding option will cause it to be converted back to binary
before being sent.</p>
</script>
<script type="text/javascript">
@ -181,7 +182,7 @@
} else {
$("#node-input-port-row").show();
}
if (sockettype == "client") {
$("#node-input-host-row").show();
} else {
@ -193,3 +194,75 @@
}
});
</script>
<script type="text/x-red" data-template-name="tcp request">
<div class="form-row">
<label for="node-input-server"><i class="fa fa-globe"></i> Server</label>
<input type="text" id="node-input-server" placeholder="ip.address" style="width:50%">
&nbsp;port <input type="text" id="node-input-port" style="width:50px">
</div>
<div class="form-row">
<label for="node-input-out"><i class="fa fa-sign-out"></i> Return</label>
<select type="text" id="node-input-out" style="width:52%;">
<option value="time">after a fixed timeout of</option>
<option value="char">when character received is</option>
<option value="count">a fixed number of characters</option>
</select>
<input type="text" id="node-input-splitc" style="width:50px;">
<span id="node-units"></span>
</div>
<div class="form-row">
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
<div class="form-tips"><b>Tip:</b> outputs a binary <b>Buffer</b>, so you may want to .toString() it.</div>
<script>
var previous = null;
$("#node-input-out").on('focus', function () { previous = this.value; }).change(function() {
if (previous == null) { previous = $("#node-input-out").val(); }
if ($("#node-input-out").val() == "char") {
if (previous != "char") $("#node-input-splitc").val("\\n");
$("#node-units").text("");
}
else if ($("#node-input-out").val() == "time") {
if (previous != "time") $("#node-input-splitc").val("0");
$("#node-units").text("ms");
}
else {
if (previous != "count") $("#node-input-splitc").val("12");
$("#node-units").text("chars");
}
});
</script>
<script type="text/x-red" data-help-name="tcp request">
<p>A simple TCP request node - sends the <b>msg.payload</b> to a server tcp port and expects a response.</p>
<p>Connects, sends the "request", reads the "response" and disconnects. It can either count a number of
returned characters into a fixed buffer, match a specified character before returning,
or wait a fixed timeout from first reply and then return.</p>
<p>The response will be output in <b>msg.payload</b> as a buffer, so you may want to .toString() it.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('tcp request',{
category: 'function',
color:"Silver",
defaults: {
server: {value:"",required:true},
port: {value:"",required:true,validate:RED.validators.number()},
out: {value:"time",required:true},
splitc: {value:"0",required:true},
name: {value:""}
},
inputs:1,
outputs:1,
icon: "bridge-dash.png",
label: function() {
return this.name || "tcp:"+(this.server?this.server+":":"")+this.port;
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

112
nodes/core/io/31-tcpin.js
View File

@ -309,6 +309,116 @@ module.exports = function(RED) {
});
}
}
RED.nodes.registerType("tcp out",TcpOut);
function TcpGet(n) {
RED.nodes.createNode(this,n);
this.server = n.server;
this.port = Number(n.port);
this.out = n.out;
this.splitc = n.splitc;
if (this.out != "char") { this.splitc = Number(this.splitc); }
else { this.splitc.replace("\\n","\n").replace("\\r","\r").replace("\\t","\t").replace("\\e","\e").replace("\\f","\f").replace("\\0","\0"); }
var buf;
if (this.out == "count") { buf = new Buffer(this.splitc); }
else { buf = new Buffer(32768); } // set it to 32k... hopefully big enough for most.... but only hopefully
var node = this;
var client;
this.on("input", function(msg) {
var i = 0;
if (!(msg.payload instanceof Buffer)) {
msg.payload = msg.payload.toString();
}
client = net.Socket();
client.setTimeout(socketTimeout);
client.connect(node.port, node.server, function() {
//node.log('client connected');
client.write(msg.payload);
});
client.on('data', function(data) {
//node.log("data", data.length, data);
if (node.splitc === 0) {
node.send({"payload": data});
}
else {
for (var j = 0; j < data.length; j++ ) {
if (node.out == "time") {
// do the timer thing
if (node.tout) {
i += 1;
buf[i] = data[j];
}
else {
node.tout = setTimeout(function () {
node.tout = null;
var m = new Buffer(i+1);
buf.copy(m,0,0,i+1);
node.send({"payload": m});
client.end();
m = null;
}, node.splitc);
i = 0;
buf[0] = data[j];
}
}
// count bytes into a buffer...
else if (node.out == "count") {
buf[i] = data[j];
i += 1;
if ( i >= node.serialConfig.count) {
node.send({"payload": buf});
client.end();
i = 0;
}
}
// look for a char
else {
buf[i] = data[j];
i += 1;
if (data[j] == node.splitc) {
var m = new Buffer(i);
buf.copy(m,0,0,i);
node.send({"payload": m});
client.end();
m = null;
i = 0;
}
}
}
}
});
client.on('end', function() {
//node.log('client disconnected');
});
client.on('error', function() {
node.log('connect failed');
if (client) { client.end(); }
});
client.on('timeout',function() {
node.log('connect timeout');
if (client) {
client.end();
setTimeout(function() {
client.connect(node.port, node.server, function() {
//node.log('client connected');
client.write(msg.payload);
});
},reconnectTime);
}
});
});
this.on("close", function() {
if (client) { buf = null; client.end(); }
});
}
RED.nodes.registerType("tcp request",TcpGet);
}