How to identify spring to a QOS?

[beejayzed]

I want to setup a qos for my lan so that I don't get ping spikes in spring.
So how can I identify spring traffic to it? Can I tell spring to always try to use a specific source port (when running as a client)?

[AF]

Usually 8452 UDP is springs port. This can change if you're using holepunching though.

[beejayzed]

This can change if you're using holepunching though.

That's why I need another way. I often play games with NAT traversal.

[Peet]

Hmm....spring reads the sourceport from script.txt, and if it's not there it defaults to 0 and then loops until it finds a free one

Code: Select all

	while (bind(mySocket,(struct sockaddr *)&saMe,sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
		numTries++;
		if(numTries>10){
			closesocket(mySocket);
			throw network_error("Error binding socket as client: "+GetErrorMsg());
		}
		saMe.sin_port = htons(sourceport+numTries);
	}

...gross

You'll have to bug Satirik to add an option to force the source port...in the meantime, when a game starts, kill spring.exe, manually edit script.txt to add "sourceport=xxxx;" below the other connection info, and relaunch spring from the command prompt with script.txt as an argument.

[beejayzed]

Why not use a more portable language to make the hack?
Maybe I'll try to do this in python. Does it have to be in a specific location in the file, or anywhere past the first brace?

[Peet]

Why not use a more portable language to make the hack?

my VS install died to it's a moot point

Could be anywhere past the first brace, the tdf parser is nice and un-picky like that :)

[beejayzed]

Here is a python script which is meant to replace the spring executable so that the lobby runs it instead. Put the name of your executable in the execute function. I haven't tested it in windows. Does spring exist in the path in windows?
I tested a bit on my machine, played a few games, it does what it's meant to.

Code: Select all

#!/usr/bin/python

import sys
import os

port = 46235
script = ''
scriptfilelist = []
sourceportexists = 0
if len(sys.argv) > 1:
    script = sys.argv[1:]
    print type(script)
    if type(script) == list:
        script = ' '.join(script)

print sys.argv
print script
print script[-4:]

def execute():
    global script
    os.execlp('spring','spring',os.getcwd()+'/'+script)
    sys.exit()


def writenewfile():
    global port,script,scriptfilelist
    print 'Adding source port as', port, 'to script file', script 

    scriptfile = file(script, 'w')
    for i in scriptfilelist:
        scriptfile.writelines(i)
        if i[0] == '{':
            scriptfile.writelines('\tsourceport='+str(port)+';\r\n')
    scriptfile.close()

#incase input file is not .txt, a start script)
if script[-4:] != '.txt':execute()
    
scriptfile = file(script, 'r')
for i in scriptfile:
    scriptfilelist.append(i)
scriptfile.close()

for i in scriptfilelist:
    if i.find('sourceport') == 1:
        sourceportexists = 1
        print 'sourceport exists'

if sourceportexists == 0: writenewfile()

execute()