CFLib.org – easySocket

easySocket(host, port, message)

Last updated August 27, 2009

author

George Georgiou
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Version: 1 | Requires: ColdFusion MX | Library: NetLib

Rated 8 time(s). Average Rating: 4.8

Description:
This function allows ColdFusion developers to connect to remote hosts through the TCP/IP protocol and transmit messages. Very useful for implementing chat rooms, integrate with third party applications such as merchant carts etc.

Return Values:
Returns a string.

Example:

#easySocket('127.0.0.1','9999','Hello from ColdFusion')#

Parameters:

Name	Description	Required
host	Host to connect to.	Yes
port	Port for connection.	Yes
message	Message to be sent.	Yes

Full UDF Source:

	
	<!---
 Connect to sockets through your ColdFusion application.
 Mods by Raymond Camden
 
 @param host      Host to connect to. (Required)
 @param port      Port for connection. (Required)
 @param message      Message to be sent. (Required)
 @return Returns a string. 
 @author George Georgiou (george1977@gmail.com) 
 @version 1, August 27, 2009 
--->
<cffunction name="easySocket" access="private" returntype="any" hint="Uses Java Sockets to connect to a remote socket over TCP/IP" output="false">

    <cfargument name="host" type="string" required="yes" default="localhost" hint="Host to connect to and send the message">
    <cfargument name="port" type="numeric" required="Yes" default="8080" hint="Port to connect to and send the message">
    <cfargument name="message" type="string" required="yes" default="" hint="The message to transmit">

   <cfset var result = "">
   <cfset var socket = createObject( "java", "java.net.Socket" )>
   <cfset var streamOut = "">
    <cfset var output = "">
    <cfset var input = "">

   <cftry>
      <cfset socket.init(arguments.host,arguments.port)>
      <cfcatch type="Object">
         <cfset result = "Could not connected to host <strong>#arguments.host#</strong>, port <strong>#arguments.port#</strong>.">
         <cfreturn result>
      </cfcatch>  
   </cftry>

   <cfif socket.isConnected()>
       <cfset streamOut = socket.getOutputStream()>
       
       <cfset output = createObject("java", "java.io.PrintWriter").init(streamOut)>
       <cfset streamInput = socket.getInputStream()>
       
       <cfset inputStreamReader= createObject( "java", "java.io.InputStreamReader").init(streamInput)>
       <cfset input = createObject( "java", "java.io.BufferedReader").init(InputStreamReader)>
        
       <cfset output.println(arguments.message)>
       <cfset output.println()> 
       <cfset output.flush()>
       
       <cfset result=input.readLine()>
       <cfset socket.close()>
   <cfelse>
      <cfset result = "Could not connected to host <strong>#arguments.host#</strong>, port <strong>#arguments.port#</strong>.">
   </cfif>
   
   <cfreturn result>
</cffunction>