session: Use defines for ssh_handle_packets().

src/channels1.c

@@ -157,7 +157,7 @@ int channel_change_pty_size1(ssh_channel channel, int cols, int rows) {
 
   ssh_log(session, SSH_LOG_PROTOCOL, "Change pty size send");
   while(channel->request_state==SSH_CHANNEL_REQ_STATE_PENDING){
-    ssh_handle_packets(session,-1);
+    ssh_handle_packets(session, SSH_TIMEOUT_INFINITE);
   }
   switch(channel->request_state){
     case SSH_CHANNEL_REQ_STATE_ERROR:

src/client.c

@@ -687,8 +687,12 @@ pending:
           session->session_state = SSH_SESSION_STATE_ERROR;
       }
   }
-  else
-      ssh_handle_packets_termination(session, 0, ssh_connect_termination, session);
+  else {
+      ssh_handle_packets_termination(session,
+                                     SSH_TIMEOUT_NONBLOCKING,
+                                     ssh_connect_termination,
+                                     session);
+  }
   ssh_log(session,SSH_LOG_PACKET,"ssh_connect: Actual state : %d",session->session_state);
   if(!ssh_is_blocking(session) && !ssh_connect_termination(session)){
     leave_function();

src/kex1.c

@@ -471,14 +471,14 @@ int ssh_get_kex1(ssh_session session) {
   ssh_log(session, SSH_LOG_PROTOCOL, "Waiting for a SSH_SMSG_PUBLIC_KEY");
   /* Here the callback is called */
   while(session->session_state==SSH_SESSION_STATE_INITIAL_KEX){
-    ssh_handle_packets(session, -2);
+    ssh_handle_packets(session, SSH_TIMEOUT_USER);
   }
   if(session->session_state==SSH_SESSION_STATE_ERROR)
     goto error;
   ssh_log(session, SSH_LOG_PROTOCOL, "Waiting for a SSH_SMSG_SUCCESS");
   /* Waiting for SSH_SMSG_SUCCESS */
   while(session->session_state==SSH_SESSION_STATE_KEXINIT_RECEIVED){
-    ssh_handle_packets(session, -2);
+    ssh_handle_packets(session, SSH_TIMEOUT_USER);
   }
   if(session->session_state==SSH_SESSION_STATE_ERROR)
       goto error;

src/server.c

@@ -1081,7 +1081,7 @@ void ssh_set_message_callback(ssh_session session,
 int ssh_execute_message_callbacks(ssh_session session){
   ssh_message msg=NULL;
   int ret;
-  ssh_handle_packets(session, 0);
+  ssh_handle_packets(session, SSH_TIMEOUT_NONBLOCKING);
   if(!session->ssh_message_list)
     return SSH_OK;
   if(session->ssh_message_callback){