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added bases for nonblocking packet sending and receiving. packet_send

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and packet_read may return SSH_AGAIN if the session is nonblocking and 
there is not enough data to be read.
I also added a socket buffering through session->in_socket_buffer. It is 
more low-level than the packet buffer.
I should rename in_buffer with in_packet_buffer.
There is still work to do with the socket status, (opened, error, 
closed, ...) and much more work to extend the nonblocking to session 
opening, messages sending and such.
I find the switch(session->packet_state) solution very nice (especially 
when the nonblocking function may have 10 differents states, like in a 
connection.)


git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@49 7dcaeef0-15fb-0310-b436-a5af3365683c
This commit is contained in:
Aris Adamantiadis
2005-11-22 23:15:31 +00:00
parent cddc5d6889
commit 1847fb2373
5 changed files with 217 additions and 118 deletions
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10
include/libssh/priv.h
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@@ -304,7 +304,7 @@ struct ssh_session {
not block */
int data_to_write;
int data_except;
int blocking; // functions should not block
int blocking; // functions should block
STRING *banner; /* that's the issue banner from
the server */
@@ -315,6 +315,14 @@ struct ssh_session {
BUFFER *in_buffer;
PACKET in_packet;
BUFFER *out_buffer;
BUFFER *out_socket_buffer;
BUFFER *in_socket_buffer;
/* the states are used by the nonblocking stuff to remember */
/* where it was before being interrupted */
int packet_state;
KEX server_kex;
KEX client_kex;
BUFFER *in_hashbuf;