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Fixed PCB state issue when closing connection

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This commit is contained in:
Joseph Henry 2015-10-28 16:18:08 -07:00
parent c8f27da294
commit f6e0bdb2f2
2 changed files with 23 additions and 20 deletions
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41
netcon/NetconEthernetTap.cpp
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@ -51,7 +51,7 @@
#define APPLICATION_POLL_FREQ 20 #define APPLICATION_POLL_FREQ 20
#define ZT_LWIP_TCP_TIMER_INTERVAL 10 #define ZT_LWIP_TCP_TIMER_INTERVAL 10
#define STATUS_TMR_INTERVAL 500 // How often we check connection statuses #define STATUS_TMR_INTERVAL 2000 // How often we check connection statuses
namespace ZeroTier { namespace ZeroTier {
@ -267,11 +267,12 @@ TcpConnection *NetconEthernetTap::getConnectionByTheirFD(PhySocket *sock, int fd
void NetconEthernetTap::closeConnection(TcpConnection *conn) void NetconEthernetTap::closeConnection(TcpConnection *conn)
{ {
fprintf(stderr, "closeConnection(%x, %d)\n", conn->pcb, _phy.getDescriptor(conn->dataSock)); fprintf(stderr, "closeConnection(%x, %d)\n", conn->pcb, _phy.getDescriptor(conn->dataSock));
lwipstack->_tcp_arg(conn->pcb, NULL);
lwipstack->_tcp_sent(conn->pcb, NULL); //lwipstack->_tcp_sent(conn->pcb, NULL);
lwipstack->_tcp_recv(conn->pcb, NULL); //lwipstack->_tcp_recv(conn->pcb, NULL);
lwipstack->_tcp_err(conn->pcb, NULL); //lwipstack->_tcp_err(conn->pcb, NULL);
lwipstack->_tcp_poll(conn->pcb, NULL, 0); //lwipstack->_tcp_poll(conn->pcb, NULL, 0);
//lwipstack->_tcp_arg(conn->pcb, NULL);
lwipstack->_tcp_close(conn->pcb); lwipstack->_tcp_close(conn->pcb);
if(conn->dataSock) { if(conn->dataSock) {
close(_phy.getDescriptor(conn->dataSock)); close(_phy.getDescriptor(conn->dataSock));
@ -352,7 +353,7 @@ void NetconEthernetTap::threadMain()
uint64_t etharp_remaining = ARP_TMR_INTERVAL; uint64_t etharp_remaining = ARP_TMR_INTERVAL;
uint64_t status_remaining = STATUS_TMR_INTERVAL; uint64_t status_remaining = STATUS_TMR_INTERVAL;
if (since_status >= STATUS_TMR_INTERVAL && true == false) { if (since_status >= STATUS_TMR_INTERVAL) {
prev_status_time = now; prev_status_time = now;
if(rpc_sockets.size() || tcp_connections.size()) { if(rpc_sockets.size() || tcp_connections.size()) {
/* Here we will periodically check the list of rpc_sockets for those that /* Here we will periodically check the list of rpc_sockets for those that
@ -582,7 +583,7 @@ err_t NetconEthernetTap::nc_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
Larg *l = (Larg*)arg; Larg *l = (Larg*)arg;
TcpConnection *conn = l->conn; TcpConnection *conn = l->conn;
NetconEthernetTap *tap = l->tap; NetconEthernetTap *tap = l->tap;
int larg_fd = tap->_phy.getDescriptor(conn->dataSock); int listening_fd = tap->_phy.getDescriptor(conn->dataSock);
if(conn) { if(conn) {
ZT_PHY_SOCKFD_TYPE fds[2]; ZT_PHY_SOCKFD_TYPE fds[2];
@ -600,20 +601,24 @@ err_t NetconEthernetTap::nc_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
new_tcp_conn->their_fd = fds[1]; new_tcp_conn->their_fd = fds[1];
tap->tcp_connections.push_back(new_tcp_conn); tap->tcp_connections.push_back(new_tcp_conn);
fprintf(stderr, "socketpair = {%d, %d}\n", fds[0], fds[1]); fprintf(stderr, "socketpair = {%d, %d}\n", fds[0], fds[1]);
int send_fd = tap->_phy.getDescriptor(conn->rpcSock); int n, send_fd = tap->_phy.getDescriptor(conn->rpcSock);
fprintf(stderr, "write(%d,...)\n", larg_fd); fprintf(stderr, "write(%d,...)\n", listening_fd);
int n = write(larg_fd, "z", 1); // accept() in library waits for this byte //int n = write(listening_fd, "z", 1); // accept() in library waits for this byte
if(n > 0) { if((n = send(listening_fd, "z", 1, MSG_NOSIGNAL)) < 0) {
fprintf(stderr, " nc_accept(): Error: [send(listening_fd,...) = MSG_NOSIGNAL].\n");
return -1;
}
else if(n > 0) {
if(sock_fd_write(send_fd, fds[1]) > 0) { if(sock_fd_write(send_fd, fds[1]) > 0) {
close(fds[1]); // close other end of socketpair close(fds[1]); // close other end of socketpair
new_tcp_conn->pending = true; new_tcp_conn->pending = true;
} }
else { else {
fprintf(stderr, "nc_accept(%d): unable to send fd to client\n", larg_fd); fprintf(stderr, "nc_accept(%d): unable to send fd to client\n", listening_fd);
} }
} }
else { else {
fprintf(stderr, "nc_accept(%d): error writing signal byte (send_fd = %d, perceived_fd = %d)\n", larg_fd, send_fd, fds[1]); fprintf(stderr, "nc_accept(%d): error writing signal byte (send_fd = %d, perceived_fd = %d)\n", listening_fd, send_fd, fds[1]);
return -1; return -1;
} }
tap->lwipstack->_tcp_arg(newpcb, new Larg(tap, new_tcp_conn)); tap->lwipstack->_tcp_arg(newpcb, new Larg(tap, new_tcp_conn));
@ -625,7 +630,7 @@ err_t NetconEthernetTap::nc_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
return ERR_OK; return ERR_OK;
} }
else { else {
fprintf(stderr, "nc_accept(%d): can't locate Connection object for PCB.\n", larg_fd); fprintf(stderr, "nc_accept(%d): can't locate Connection object for PCB.\n", listening_fd);
} }
return -1; return -1;
} }
@ -813,13 +818,11 @@ err_t NetconEthernetTap::nc_poll(void* arg, struct tcp_pcb *tpcb)
*/ */
err_t NetconEthernetTap::nc_sent(void* arg, struct tcp_pcb *tpcb, u16_t len) err_t NetconEthernetTap::nc_sent(void* arg, struct tcp_pcb *tpcb, u16_t len)
{ {
//fprintf(stderr, "nc_sent()\n"); //fprintf(stderr, " nc_sent()\n");
Larg *l = (Larg*)arg; Larg *l = (Larg*)arg;
if(len) { if(len) {
//fprintf(stderr, "ACKING len = %d, setting read-notify = true, (sndbuf = %d)\n", len, l->conn->pcb->snd_buf); fprintf(stderr, " nc_sent(): ACKING len = %d, setting read-notify = true, (sndbuf = %d)\n", len, l->conn->pcb->snd_buf);
l->tap->_phy.setNotifyReadable(l->conn->dataSock, true); l->tap->_phy.setNotifyReadable(l->conn->dataSock, true);
//uint64_t now = OSUtils::now();
//fprintf(stderr, "nc_sent(): now = %u\n", now);
l->tap->_phy.whack(); l->tap->_phy.whack();
} }
return ERR_OK; return ERR_OK;

2
netcon/README.md
View file

@ -108,7 +108,7 @@ Network Containers have been tested with the following:
vsftpd [BROKEN as of 20151021] Server sends 500 when 220 is expected vsftpd [BROKEN as of 20151021] Server sends 500 when 220 is expected
mysql [BROKEN as of 20151021] mysql [BROKEN as of 20151021]
postresql [BROKEN as of 20151021] postresql [BROKEN as of 20151021]
MongoDB [ WORKS as of 20151021] Only basic connection tested, no DB operations yet MongoDB [ WORKS as of 20151028]
Redis-server [ WORKS as of 20151027] Redis-server [ WORKS as of 20151027]
pure-ftpd [BROKEN as of 20151021] Socket operation on non-socket pure-ftpd [BROKEN as of 20151021] Socket operation on non-socket