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  #1 (permalink)  
Old November 16th, 2004
GSt GSt is offline
Join Date: November 16th, 2004
Posts: 2
GSt is flying high
Unhappy Handshake not working


i'm writing a small gnutella client, but up till now can't even establish a connection, because the other peer always responds with
GNUTELLA/0.6 500 Invalid Handshake
i'm developing my client using java, what i'm sending to the other peer as handshake is

User-Agent: test/0.1\r\n
the java code i'm using to send it is

String msg = "";
msg += "GNUTELLA CONNECT/0.6\r\n";
msg += "User-Agent: test/0.1\r\n";
msg += "\r\n";
outputStream.write(msg.getBytes(), 0, msg.getBytes().length);
i already studied the 0.6 protocol spec, read tbrough various forums and had a look at the open source client phex, but i can't figure out what's wrong with my handshake, phex is doing exactly the same.

please help, thanks
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  #2 (permalink)  
Old November 16th, 2004
arne_bab's Avatar
Draketo, small dragon.
Join Date: May 31st, 2002
Location: Heidelberg, Germany
Posts: 1,881
arne_bab is a great assister to others; your light through the dark tunnel


Ich kann selbst noch nicht programmieren, sondern habe mich immer auf der theoretischen Ebene mit Gnutella beschäftigt. Trotzdem habe ich mich gerade etwas im Phex Quellcode umgesehen.

Die Header, die du schickst sind extrem minimal, sollten aber eigentlich funktionieren. Hast du dein Programm an einem lokalen Programm getestet, das Ultrapeer fähigkeiten aktiviert hat?

Ansonsten kann es nämlich leicht sein, dass du an ein Blatt (Leaf-Node) geraten bist, das keinerlei eigehende Verbindungen annimmt.

Zur Sicherheit solltest du es mit Phex versuchen, und in den Prefs unter Verbindungen peer-verbindungen aktivieren.

Phex schickt außerdem noch den Header
Schreib mir bitte, wie es weiterging!

Was planst du, mit dem Programm zu machen?
Wieso nimmst du nicht eifnach Code von Phex?

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Erst im Spiel lebt der Mensch.
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  #3 (permalink)  
Old November 17th, 2004
Phex Developer
Join Date: May 8th, 2001
Location: Stuttgart, Germany
Posts: 981
GregorK is flying high

Phex should accept this handshake if there are peer slots open.

Other clients will most likely reject it since Phex is one of the rare clients left that still support peer connections and handshakes without the ultrapeer headers. I think we even support incoming 0.4 handshakes...
Though the peer and 0.4 handshake is not tested well, since its not used anymore. It could be that your connection is not very reliable.

BTW: Phex has no 500 return code.

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  #4 (permalink)  
Old November 17th, 2004
GSt GSt is offline
Join Date: November 16th, 2004
Posts: 2
GSt is flying high

you are right ! it was the ultrapeers headers that seemingly the other peer did not like

concerning the 500 error code: i didn't test it with phex, but bearshare

thank you for your help !
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  #5 (permalink)  
Old November 17th, 2004
arne_bab's Avatar
Draketo, small dragon.
Join Date: May 31st, 2002
Location: Heidelberg, Germany
Posts: 1,881
arne_bab is a great assister to others; your light through the dark tunnel

Bearshare will most probably reject your connection. No Bearshare-Leaf should ever connect outside the Bearshare-cluster.

Bearshare UPs accept some other leafs...

Last edited by arne_bab; November 17th, 2004 at 06:34 AM.
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