mirror of
https://github.com/sheumann/NetDisk.git
synced 2024-06-01 15:41:29 +00:00
d30dfd8631
This avoids sending out requests that can't work, and also gives an opportunity to process packets from the old connection while it's still logged in, which may avoid some strange behavior.
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#pragma noroot
|
|
|
|
#include <tcpip.h>
|
|
#include <stdlib.h>
|
|
#include <orca.h>
|
|
#include <misctool.h>
|
|
#include "session.h"
|
|
#include "tcpconnection.h"
|
|
|
|
/* Make a TCP connection for a session.
|
|
*
|
|
* On success, returns 0 and sets sess->ipid.
|
|
* On failure, returns an error code.
|
|
*/
|
|
enum NetDiskError StartTCPConnection(Session *sess) {
|
|
Word tcperr;
|
|
srBuff mySRBuff;
|
|
LongWord initialTime;
|
|
|
|
/* End any existing TCP connection */
|
|
EndTCPConnection(sess);
|
|
|
|
sess->ipid =
|
|
TCPIPLogin(userid(), sess->ipAddr, sess->port, 0, 0x40);
|
|
if (toolerror())
|
|
return NETWORK_ERROR;
|
|
|
|
tcperr = TCPIPOpenTCP(sess->ipid);
|
|
if (toolerror()) {
|
|
TCPIPLogout(sess->ipid);
|
|
return NETWORK_ERROR;
|
|
} else if (tcperr != tcperrOK) {
|
|
TCPIPLogout(sess->ipid);
|
|
return NO_RESPONSE;
|
|
}
|
|
|
|
initialTime = GetTick();
|
|
do {
|
|
TCPIPPoll();
|
|
TCPIPStatusTCP(sess->ipid, &mySRBuff);
|
|
} while (mySRBuff.srState == TCPSSYNSENT && GetTick()-initialTime < 15*60);
|
|
if (mySRBuff.srState != TCPSESTABLISHED) {
|
|
TCPIPAbortTCP(sess->ipid);
|
|
TCPIPLogout(sess->ipid);
|
|
return NO_RESPONSE;
|
|
}
|
|
|
|
sess->tcpLoggedIn = TRUE;
|
|
return 0;
|
|
}
|
|
|
|
void EndTCPConnection(Session *sess) {
|
|
if (sess->tcpLoggedIn) {
|
|
TCPIPPoll();
|
|
TCPIPAbortTCP(sess->ipid);
|
|
TCPIPLogout(sess->ipid);
|
|
sess->ipid = 0;
|
|
sess->tcpLoggedIn = FALSE;
|
|
}
|
|
}
|