added config file parsing abilities : See readme for syntax

Readme.md

@@ -21,3 +21,26 @@ If the network traffic is to be monitored : add a -v to the command. THis make l
 
 If a LAN IP is assigned to the host PC ,say 192.168.1.100, then proGY can be run in that address, thus accessible
 to all the devices in the network.
+Actually I got sick of the commandline arguments. So write a config file ".progy" in json format that conatains the
+following ...
+
+```Json
+{
+    "listenaddress":"[local_listen_address]:[port]",
+    "remoteproxyaddress":"[remote_proxy_address]:[remote_proxy_port]",
+    "username":"[remote_proxy_username]",
+    "password":"[remote_proxy_password]",
+    "verbose":[true or false without quotes]
+}
+```
+
+### Example 
+```Json
+{
+    "listenaddress":"127.0.0.1:9999",
+    "remoteproxyaddress":"10.8.8.90:80",
+    "username":"alanthick",
+    "password":"canadian",
+    "verbose":true
+}
+```

main.go

@@ -4,12 +4,22 @@ import (
 	"flag"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
 	"strings"
 	"net"
+	"encoding/json"
 	b64 "encoding/base64"
 )
 
+type Config struct{
+	Listenaddress string
+	Remoteproxyaddress string
+	Username string
+	Password string
+	Verbose bool
+}
+
 //A proxy represents a pair of connections and their state
 type proxy struct {
 	sentBytes     uint64
@@ -34,7 +44,18 @@ var nagles = flag.Bool("n", false, "disable nagles algorithm")
 
 //Main function to start the server
 func main() {
+	home := os.Getenv("HOME")
 	flag.Parse()
+	content,err := ioutil.ReadFile(home+"/.progy")
+	if (err != nil){
+		fmt.Println("Unable to open config file : Using defaults",err)
+	}
+	var conf Config
+	err = json.Unmarshal(content,&conf)
+	*localAddr = conf.Listenaddress
+	*remoteAddr = conf.Remoteproxyaddress
+	*authpair = conf.Username+":"+conf.Password
+	*verbose = conf.Verbose
 	fmt.Printf("Proxying from %v to %v\n", *localAddr, *remoteAddr)	
 	laddr, err := net.ResolveTCPAddr("tcp", *localAddr)
 	check(err)