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Add support for proxy protocol #122

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23 changes: 14 additions & 9 deletions sip.js
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Original file line number Diff line number Diff line change
Expand Up @@ -442,6 +442,7 @@ function makeStreamParser(onMessage, onFlood, maxBytesHeaders, maxContentLength)
maxContentLength= maxContentLength || 604800;

var m;
var p;
var r = '';

function headers(data) {
Expand All @@ -457,11 +458,16 @@ function makeStreamParser(onMessage, onFlood, maxBytesHeaders, maxContentLength)

}

var a = r.match(/^\s*([\S\s]*?)\r\n\r\n([\S\s]*)$/);

if(a) {
r = a[2];
m = parse(a[1]);
var a = r.match(/^PROXY (\S+) (\S+) (\S+) (\S+) (\S+)\r\n([\S\s]*)$/);
if (a) {
p = {'protocol': a[1], 'source-address': a[2], 'destination-address': a[3], 'source-port': a[4], 'destination-port': a[5]};
r = a[6];
}

var b = r.match(/^\s*([\S\s]*?)\r\n\r\n([\S\s]*)$/);
if(b) {
r = b[2];
m = parse(b[1]);

if(m && m.headers['content-length'] !== undefined) {

Expand All @@ -487,7 +493,7 @@ function makeStreamParser(onMessage, onFlood, maxBytesHeaders, maxContentLength)
if(r.length >= m.headers['content-length']) {
m.content = r.substring(0, m.headers['content-length']);

onMessage(m);
onMessage(m, p);

var s = r.substring(m.headers['content-length']);
state = headers;
Expand Down Expand Up @@ -548,12 +554,11 @@ function makeStreamTransport(protocol, maxBytesHeaders, maxContentLength, connec
flows[flowid] = remotes[remoteid];
}

var onMessage= function(m) {

var onMessage= function(m,p) {
if(checkMessage(m)) {
if(m.method) m.headers.via[0].params.received = remote.address;
callback(m,
{protocol: remote.protocol, address: stream.remoteAddress, port: stream.remotePort, local: { address: stream.localAddress, port: stream.localPort}},
{protocol: remote.protocol, address: stream.remoteAddress, port: stream.remotePort, local: { address: stream.localAddress, port: stream.localPort}, proxy: p},
stream);
}

Expand Down