Magnus Henoch wrote:
Alexander Wenckus <[EMAIL PROTECTED]> writes:
Hi:
I am having some trouble implementing file transfers i am using both
exodus and PSI to test with. I am attempting to do a direct connection
currently and as far as I know I am implementing the byte stream
correctly because both PSI and Exodus are connecting to my socket
successfully but my problem lies in that I am not sure why they are
sending me what they are sending me and what to do with it. when exodus
connects it sends me three bytes: 5 1 0. 5 I assume is for socks version
5, 1 I assume is for command 1 but shouldn't that be followed with the
addr type, the addr and then the port? Thats if I am reading the JEP
correctly. Irregardless of whatever it means I send back two bytes, 0 0,
as an acknowledgement of the connection but then exodus throws up an
error message, unable to connect to any proxies. From PSI i recieve the
output on the socket 5 2 0 2 and when i attempt to send the ack 0 0 i
get the error, unable to connect to peer for file transfer. Can anyone
tell me what I am doing wrong? Any help is greatly appreciated.
Have you read http://www.faqs.org/rfcs/rfc1928.html ? It will be
useful to you.
But to your actual problem: Exodus sending the three bytes 5 1 0. 5
is indeed the SOCKS version. 1 is the number of authentication
methods supported - each of them being identified by one byte. The
following byte is therefore the only method supported, and 0 means "no
authentication". You're supposed to select one method by sending 5,
X, where X is the number of the method. Thus, send 5 0.
Psi apparently supports username/password authentication in addition
to no authentication... not sure why.
Magnus
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Hey thanks for the tip!
It go me through the next step but once again when I attempt to respond
I hit a snag. Here from both PSI and Exodus i get the same response: 5 1
0 3. 5 for socks version 5, 1 for command connect, 0 is reserved and 3
is means address type domain. Then the next 41 bytes are SHA1(sid +
target + initiator) and then 0 0 for the port. My question is how do I
respond next? I attempted just changing the 1 in the Rep part of the
message to 0 to specify success but neither PSI or Exodus liked this.
What am I doing wrong here? Thanks again in advance for any help that
can be provided.
Alex
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