/**
* Centralized connections with all peers
* Get an existing connection
* OR create one and register it with the peer
* */
public static TCPConnection getPeerConnection(NodePeer p)
{
TCPConnection con;
Sock.TryGetValue(p,out con);
if(con != null)
return con;
con = new TCPConnection(p.Address,p.Port);
Sock.Add(p,con);
return con;
}
/**
* Read the response header to see if there are packets
* sometimes , browsable packet is present but servent has disactivated for G2 network
* (shaeraza)
* return true if servent will stream g2packets
* return false if not (html code listing neighbours / or nothing)
* */
public bool ReadResponseHeader(TCPConnection con)
{
ByteBuffer resp = con.Read();
if (resp == null) return false;
string text = BinaryUtils.getStringFromBytes(resp.Bytes,(int)resp.DataOffset);
string sequence = HttpHeader.nl + HttpHeader.nl;
string[] splitter = {sequence};
string[] header = text.Split(splitter,StringSplitOptions.RemoveEmptyEntries);
if (header.Length < 2) return false;
// check if the http header is OK i.e. will the servent stream g2 packets ?
if (!ParseBrowsingResponse(header[0]))
{
return false;
}
// remove the http header part from the buffer
int dataOffset = text.IndexOf(sequence) + sequence.Length;
resp.Dequeue(dataOffset);
// put available data into the reader
reader = new G2PacketReader(this.Peer);
reader.Read(resp);
return true;
}
private bool SendHttpRequest(TCPConnection con)
{
HttpHeader header = new HttpHeader();
string request = @"GET / HTTP/1.1" + HttpHeader.nl;
request += HttpHeader.ACCEPT_KEY + ": " + @"text/html, " + HttpHeader.G2ACCEPT_DEFAULT_VALUE + HttpHeader.nl;
request += HttpHeader.USER_AGENT_KEY + ": " + Settings.USER_AGENT + HttpHeader.nl;
request += HttpHeader.ACCEPT_ENCODING_KEY + @": identity" + HttpHeader.nl;
request += @"Connection: close" + HttpHeader.nl ;
request += @"Host: " + Peer.Address.ToString() + ":" + Peer.Port;
request += HttpHeader.nl + HttpHeader.nl;
bool succ = con.Send(new ByteBuffer(BinaryUtils.getSimpleBytesFromString(request)));
return succ;
}
// tells if we have found a hub ready to connect or not
public GHandshake(NodePeer remoteHost)
{
this.remote_host = remoteHost;
tcp = TCPConnection.getPeerConnection(remoteHost);
Encoding = HttpHeader.ENCODING_IDENTITY;
}