mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2024-11-22 17:39:53 +03:00
Perform TCP connection attempts via IPv6 and IPv4 in parallel
This commit is contained in:
Yihong Wu
parent
e6bf956806
commit
384ab07996
@ -380,6 +380,7 @@ typedef struct RUDP_STACK RUDP_STACK;
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typedef struct RUDP_SOURCE_IP RUDP_SOURCE_IP;
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typedef struct RUDP_SESSION RUDP_SESSION;
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typedef struct RUDP_SEGMENT RUDP_SEGMENT;
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typedef struct CONNECT_SERIAL_PARAM CONNECT_SERIAL_PARAM;
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typedef struct CONNECT_TCP_RUDP_PARAM CONNECT_TCP_RUDP_PARAM;
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typedef struct TCP_PAIR_HEADER TCP_PAIR_HEADER;
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typedef struct NIC_ENTRY NIC_ENTRY;
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@ -44,7 +44,7 @@
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#ifdef UNIX
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#ifdef UNIX_SOLARIS
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#define USE_STATVFS
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#include <sys/statvfs.h>'
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#include <sys/statvfs.h>
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#else
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#define MAYAQUA_SUPPORTS_GETIFADDRS
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#include <ifaddrs.h>
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@ -13870,163 +13870,73 @@ void ConnectThreadForRUDP(THREAD *thread, void *param)
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Set(p->FinishEvent);
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}
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// TCP connection
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SOCK *Connect(char *hostname, UINT port)
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// IPv4 connection thread (multiple protocols, multiple addresses)
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void ConnectThreadForIPv4(THREAD *thread, void *param)
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{
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return ConnectEx(hostname, port, 0);
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}
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SOCK *ConnectEx(char *hostname, UINT port, UINT timeout)
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{
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return ConnectEx2(hostname, port, timeout, NULL);
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}
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SOCK *ConnectEx2(char *hostname, UINT port, UINT timeout, bool *cancel_flag)
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{
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return ConnectEx3(hostname, port, timeout, cancel_flag, NULL, NULL, false, true);
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}
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SOCK *ConnectEx3(char *hostname, UINT port, UINT timeout, bool *cancel_flag, char *nat_t_svc_name, UINT *nat_t_error_code, bool try_start_ssl, bool no_get_hostname)
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{
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return ConnectEx4(hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, NULL);
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}
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SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, char *nat_t_svc_name, UINT *nat_t_error_code, bool try_start_ssl, bool no_get_hostname, IP *ret_ip)
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{
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SOCK *sock;
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SOCKET s;
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struct linger ling;
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IP ip4;
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IP ip6;
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char tmp[MAX_SIZE];
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SOCKET s = INVALID_SOCKET;
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IP current_ip;
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bool is_ipv6 = false;
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bool dummy = false;
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bool use_natt = false;
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char hostname_original[MAX_SIZE];
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char hint_str[MAX_SIZE];
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bool force_use_natt = false;
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UINT dummy_int = 0;
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IP dummy_ret_ip;
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// Validate arguments
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if (hostname == NULL || port == 0 || port >= 65536 || IsEmptyStr(hostname))
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UINT i;
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CONNECT_SERIAL_PARAM *p = (CONNECT_SERIAL_PARAM *)param;
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if (thread == NULL || p == NULL)
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{
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return NULL;
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}
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if (timeout == 0)
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{
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timeout = TIMEOUT_TCP_PORT_CHECK;
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}
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if (cancel_flag == NULL)
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{
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cancel_flag = &dummy;
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}
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if (nat_t_error_code == NULL)
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{
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nat_t_error_code = &dummy_int;
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return;
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}
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Zero(&dummy_ret_ip, sizeof(IP));
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if (ret_ip == NULL)
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// Delay before start
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if (p->Delay >= 1)
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{
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ret_ip = &dummy_ret_ip;
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}
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Zero(hint_str, sizeof(hint_str));
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StrCpy(hostname_original, sizeof(hostname_original), hostname);
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use_natt = (IsEmptyStr(nat_t_svc_name) ? false : true);
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if (use_natt)
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{
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// In case of using NAT-T, split host name if the '/' is included in the host name
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UINT i = SearchStrEx(hostname, "/", 0, false);
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if (i == INFINITE)
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{
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// Not included
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StrCpy(hostname_original, sizeof(hostname_original), hostname);
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}
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else
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{
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// Included
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StrCpy(hostname_original, sizeof(hostname_original), hostname);
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hostname_original[i] = 0;
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// Force to use the NAT-T
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force_use_natt = true;
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// Copy the hint string
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StrCpy(hint_str, sizeof(hint_str), hostname + i + 1);
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if (StrCmpi(hint_str, "tcp") == 0 || StrCmpi(hint_str, "disable") == 0
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|| StrCmpi(hint_str, "disabled") == 0
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|| StrCmpi(hint_str, "no") == 0 || StrCmpi(hint_str, "none") == 0)
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{
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// Force not to use the NAT-T
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force_use_natt = false;
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use_natt = false;
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}
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}
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}
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else
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{
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StrCpy(hostname_original, sizeof(hostname_original), hostname);
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WaitEx(NULL, p->Delay, p->NoDelayFlag);
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}
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Zero(¤t_ip, sizeof(current_ip));
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Zero(&ip4, sizeof(ip4));
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Zero(&ip6, sizeof(ip6));
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if (IsZeroIp(ret_ip) == false)
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for (i = 0; i < LIST_NUM(p->IpList); ++i)
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{
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// Skip name resolution
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if (IsIP6(ret_ip))
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IP *ip = LIST_DATA(p->IpList, i);
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if (IsZeroIp(ip))
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{
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Copy(&ip6, ret_ip, sizeof(IP));
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}
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else
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{
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Copy(&ip4, ret_ip, sizeof(IP));
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continue;
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}
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//Debug("Using cached IP address: %s = %r\n", hostname_original, ret_ip);
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}
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else
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{
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// Forward resolution
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if (DnsResolve(&ip6, &ip4, hostname_original, 0, cancel_flag) == false)
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// Delay before retry
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if (i > 0 && p->RetryDelay >= 1)
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{
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return NULL;
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WaitEx(NULL, p->RetryDelay, p->CancelFlag);
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}
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}
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if (IsZeroIp(&ip4) == false && IsIPLocalHostOrMySelf(&ip4))
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{
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// NAT-T isn't used in the case of connection to localhost
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force_use_natt = false;
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use_natt = false;
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}
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if (*p->CancelFlag)
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{
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// Cancel by the user
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break;
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}
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s = INVALID_SOCKET;
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bool use_natt = p->Use_NatT;
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bool force_use_natt = p->Force_NatT;
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if (IsIPLocalHostOrMySelf(ip))
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{
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// NAT-T isn't used in the case of connection to localhost
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force_use_natt = false;
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use_natt = false;
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}
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// Attempt to connect with IPv4
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if (IsZeroIp(&ip4) == false)
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{
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if (use_natt == false)
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{
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// Normal connection without using NAT-T
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s = ConnectTimeoutIPv4(&ip4, port, timeout, cancel_flag);
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s = ConnectTimeoutIPv4(ip, p->Port, p->Timeout, p->CancelFlag);
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if (s != INVALID_SOCKET)
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{
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Copy(¤t_ip, &ip4, sizeof(IP));
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Copy(¤t_ip, ip, sizeof(IP));
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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}
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}
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else if (force_use_natt)
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{
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// The connection by forcing the use of NAT-T (not to connection with normal TCP)
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SOCK *nat_t_sock = NewRUDPClientNatT(nat_t_svc_name, &ip4, nat_t_error_code, timeout, cancel_flag,
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hint_str, hostname);
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SOCK *nat_t_sock = NewRUDPClientNatT(p->NatT_SvcName, ip, p->NatT_ErrorCode, p->Timeout, p->CancelFlag, p->HintStr, p->Hostname);
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if (nat_t_sock != NULL)
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{
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@ -14034,9 +13944,10 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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AddProtocolDetailsStr(nat_t_sock->ProtocolDetails, sizeof(nat_t_sock->ProtocolDetails), "RUDP");
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}
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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return nat_t_sock;
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p->Sock = nat_t_sock;
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break;
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}
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else
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{
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@ -14058,47 +13969,47 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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Zero(&p4, sizeof(p4));
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// p1: TCP
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StrCpy(p1.Hostname, sizeof(p1.Hostname), hostname_original);
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Copy(&p1.Ip, &ip4, sizeof(IP));
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p1.Port = port;
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p1.Timeout = timeout;
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StrCpy(p1.Hostname, sizeof(p1.Hostname), p->Hostname_Original);
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Copy(&p1.Ip, ip, sizeof(IP));
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p1.Port = p->Port;
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p1.Timeout = p->Timeout;
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p1.CancelFlag = &cancel_flag2;
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p1.FinishEvent = finish_event;
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p1.Tcp_TryStartSsl = try_start_ssl;
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p1.Tcp_TryStartSsl = p->Tcp_TryStartSsl;
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p1.CancelLock = NewLock();
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// p2: NAT-T
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StrCpy(p2.Hostname, sizeof(p2.Hostname), hostname_original);
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Copy(&p2.Ip, &ip4, sizeof(IP));
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p2.Port = port;
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p2.Timeout = timeout;
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StrCpy(p2.Hostname, sizeof(p2.Hostname), p->Hostname_Original);
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Copy(&p2.Ip, ip, sizeof(IP));
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p2.Port = p->Port;
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p2.Timeout = p->Timeout;
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p2.CancelFlag = &cancel_flag2;
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p2.FinishEvent = finish_event;
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StrCpy(p2.HintStr, sizeof(p2.HintStr), hint_str);
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StrCpy(p2.TargetHostname, sizeof(p2.TargetHostname), hostname);
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StrCpy(p2.SvcName, sizeof(p2.SvcName), nat_t_svc_name);
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StrCpy(p2.HintStr, sizeof(p2.HintStr), p->HintStr);
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StrCpy(p2.TargetHostname, sizeof(p2.TargetHostname), p->Hostname);
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StrCpy(p2.SvcName, sizeof(p2.SvcName), p->NatT_SvcName);
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p2.Delay = 30; // Delay by 30ms
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// p3: over ICMP
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StrCpy(p3.Hostname, sizeof(p3.Hostname), hostname_original);
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Copy(&p3.Ip, &ip4, sizeof(IP));
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p3.Port = port;
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p3.Timeout = timeout;
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StrCpy(p3.Hostname, sizeof(p3.Hostname), p->Hostname_Original);
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Copy(&p3.Ip, ip, sizeof(IP));
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p3.Port = p->Port;
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p3.Timeout = p->Timeout;
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p3.CancelFlag = &cancel_flag2;
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p3.FinishEvent = finish_event;
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StrCpy(p3.SvcName, sizeof(p3.SvcName), nat_t_svc_name);
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StrCpy(p3.SvcName, sizeof(p3.SvcName), p->NatT_SvcName);
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p3.RUdpProtocol = RUDP_PROTOCOL_ICMP;
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p3.Delay = 200; // Delay by 200ms
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// p4: over DNS
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StrCpy(p4.Hostname, sizeof(p4.Hostname), hostname_original);
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Copy(&p4.Ip, &ip4, sizeof(IP));
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p4.Port = port;
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p4.Timeout = timeout;
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StrCpy(p4.Hostname, sizeof(p4.Hostname), p->Hostname_Original);
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Copy(&p4.Ip, ip, sizeof(IP));
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p4.Port = p->Port;
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p4.Timeout = p->Timeout;
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p4.CancelFlag = &cancel_flag2;
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p4.FinishEvent = finish_event;
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StrCpy(p4.SvcName, sizeof(p4.SvcName), nat_t_svc_name);
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StrCpy(p4.SvcName, sizeof(p4.SvcName), p->NatT_SvcName);
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p4.RUdpProtocol = RUDP_PROTOCOL_DNS;
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p4.Delay = 100; // Delay by 100ms
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@ -14111,7 +14022,7 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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{
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UINT64 now = Tick64();
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if (*cancel_flag)
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if (*p->CancelFlag)
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{
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// Cancel by the user
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break;
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@ -14209,7 +14120,7 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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DeleteLock(p1.CancelLock);
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if (*cancel_flag)
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if (*p->CancelFlag)
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{
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// Abandon all the results because the user canceled
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Disconnect(p1.Result_Nat_T_Sock);
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@ -14221,7 +14132,7 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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Disconnect(p4.Result_Nat_T_Sock);
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ReleaseSock(p4.Result_Nat_T_Sock);
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return NULL;
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break;
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}
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if (p1.Ok)
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@ -14237,15 +14148,16 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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Disconnect(p4.Result_Nat_T_Sock);
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ReleaseSock(p4.Result_Nat_T_Sock);
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if (GetHostName(hostname, sizeof(hostname), &ip4))
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if (GetHostName(hostname, sizeof(hostname), ip))
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{
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Free(p1.Result_Tcp_Sock->RemoteHostname);
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p1.Result_Tcp_Sock->RemoteHostname = CopyStr(hostname);
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}
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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return p1.Result_Tcp_Sock;
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p->Sock = p1.Result_Tcp_Sock;
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break;
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}
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else if (p2.Ok)
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{
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@ -14259,9 +14171,10 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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StrCpy(p2.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p2.Result_Nat_T_Sock->UnderlayProtocol), SOCK_UNDERLAY_NAT_T);
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AddProtocolDetailsStr(p2.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p2.Result_Nat_T_Sock->UnderlayProtocol), "RUDP/UDP");
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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return p2.Result_Nat_T_Sock;
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p->Sock = p2.Result_Nat_T_Sock;
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break;
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}
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else if (p4.Ok)
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{
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@ -14273,9 +14186,10 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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StrCpy(p4.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p4.Result_Nat_T_Sock->UnderlayProtocol), SOCK_UNDERLAY_DNS);
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AddProtocolDetailsStr(p4.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p4.Result_Nat_T_Sock->UnderlayProtocol), "RUDP/DNS");
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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return p4.Result_Nat_T_Sock;
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p->Sock = p4.Result_Nat_T_Sock;
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break;
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}
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else if (p3.Ok)
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{
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@ -14283,21 +14197,73 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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StrCpy(p3.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p3.Result_Nat_T_Sock->UnderlayProtocol), SOCK_UNDERLAY_ICMP);
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AddProtocolDetailsStr(p3.Result_Nat_T_Sock->UnderlayProtocol, sizeof(p3.Result_Nat_T_Sock->UnderlayProtocol), "RUDP/ICMP");
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Copy(ret_ip, &ip4, sizeof(IP));
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Copy(p->Ret_Ip, ip, sizeof(IP));
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return p3.Result_Nat_T_Sock;
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p->Sock = p3.Result_Nat_T_Sock;
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break;
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}
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else
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{
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// Continue the process if all trials failed
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*nat_t_error_code = p2.NatT_ErrorCode;
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*p->NatT_ErrorCode = p2.NatT_ErrorCode;
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}
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}
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if (s != INVALID_SOCKET)
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{
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p->Sock = CreateTCPSock(s, false, ¤t_ip, p->No_Get_Hostname, p->Hostname_Original);
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break;
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}
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}
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// Attempt to connect with IPv6
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if (s == INVALID_SOCKET && IsZeroIp(&ip6) == false)
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p->Ok = (p->Sock == NULL ? false : true);
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p->FinishedTick = Tick64();
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p->Finished = true;
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Set(p->FinishEvent);
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}
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// IPv6 connection thread (multiple addresses)
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void ConnectThreadForIPv6(THREAD *thread, void *param)
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{
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SOCKET s = INVALID_SOCKET;
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IP current_ip;
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UINT i;
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CONNECT_SERIAL_PARAM *p = (CONNECT_SERIAL_PARAM *)param;
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if (thread == NULL || p == NULL)
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{
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return;
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}
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// Delay before start
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if (p->Delay >= 1)
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{
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WaitEx(NULL, p->Delay, p->NoDelayFlag);
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}
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Zero(¤t_ip, sizeof(current_ip));
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for (i = 0; i < LIST_NUM(p->IpList); ++i)
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{
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IP *ip = LIST_DATA(p->IpList, i);
|
||||
|
||||
if (IsZeroIp(ip))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
// Delay before retry
|
||||
if (i > 0 && p->RetryDelay >= 1)
|
||||
{
|
||||
WaitEx(NULL, p->RetryDelay, p->CancelFlag);
|
||||
}
|
||||
|
||||
if (*p->CancelFlag)
|
||||
{
|
||||
// Cancel by the user
|
||||
break;
|
||||
}
|
||||
|
||||
struct sockaddr_in6 sockaddr6;
|
||||
struct in6_addr addr6;
|
||||
|
||||
@ -14305,10 +14271,10 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
|
||||
Zero(&addr6, sizeof(addr6));
|
||||
|
||||
// Generation of the sockaddr_in6
|
||||
IPToInAddr6(&addr6, &ip6);
|
||||
sockaddr6.sin6_port = htons((USHORT)port);
|
||||
IPToInAddr6(&addr6, ip);
|
||||
sockaddr6.sin6_port = htons((USHORT)p->Port);
|
||||
sockaddr6.sin6_family = AF_INET6;
|
||||
sockaddr6.sin6_scope_id = ip6.ipv6_scope_id;
|
||||
sockaddr6.sin6_scope_id = ip->ipv6_scope_id;
|
||||
Copy(&sockaddr6.sin6_addr, &addr6, sizeof(addr6));
|
||||
|
||||
// Socket creation
|
||||
@ -14316,7 +14282,7 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
|
||||
if (s != INVALID_SOCKET)
|
||||
{
|
||||
// Connection
|
||||
if (connect_timeout(s, (struct sockaddr *)&sockaddr6, sizeof(struct sockaddr_in6), timeout, cancel_flag) != 0)
|
||||
if (connect_timeout(s, (struct sockaddr *)&sockaddr6, sizeof(struct sockaddr_in6), p->Timeout, p->CancelFlag) != 0)
|
||||
{
|
||||
// Connection failure
|
||||
closesocket(s);
|
||||
@ -14324,18 +14290,35 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
|
||||
}
|
||||
else
|
||||
{
|
||||
Copy(¤t_ip, &ip6, sizeof(IP));
|
||||
Copy(¤t_ip, ip, sizeof(IP));
|
||||
|
||||
is_ipv6 = true;
|
||||
|
||||
Copy(ret_ip, &ip6, sizeof(IP));
|
||||
Copy(p->Ret_Ip, ip, sizeof(IP));
|
||||
}
|
||||
}
|
||||
|
||||
if (s != INVALID_SOCKET)
|
||||
{
|
||||
p->Sock = CreateTCPSock(s, true, ¤t_ip, p->No_Get_Hostname, p->Hostname_Original);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
p->Ok = (p->Sock == NULL ? false : true);
|
||||
p->FinishedTick = Tick64();
|
||||
p->Finished = true;
|
||||
|
||||
Set(p->FinishEvent);
|
||||
}
|
||||
|
||||
// Creating a TCP SOCK from a SOCKET
|
||||
SOCK *CreateTCPSock(SOCKET s, bool is_ipv6, IP *current_ip, bool no_get_hostname, char *hostname_original)
|
||||
{
|
||||
struct linger ling;
|
||||
char tmp[MAX_SIZE];
|
||||
SOCK *sock;
|
||||
|
||||
if (s == INVALID_SOCKET)
|
||||
{
|
||||
// Connection fails on both of IPv4, IPv6
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -14349,7 +14332,7 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
|
||||
AddProtocolDetailsStr(sock->ProtocolDetails, sizeof(sock->ProtocolDetails), is_ipv6 ? "IPv6" : "IPv4");
|
||||
|
||||
// Host name resolution
|
||||
if (no_get_hostname || (GetHostName(tmp, sizeof(tmp), ¤t_ip) == false))
|
||||
if (no_get_hostname || (GetHostName(tmp, sizeof(tmp), current_ip) == false))
|
||||
{
|
||||
StrCpy(tmp, sizeof(tmp), hostname_original);
|
||||
}
|
||||
@ -14399,6 +14382,255 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
|
||||
return sock;
|
||||
}
|
||||
|
||||
// TCP connection
|
||||
SOCK *Connect(char *hostname, UINT port)
|
||||
{
|
||||
return ConnectEx(hostname, port, 0);
|
||||
}
|
||||
SOCK *ConnectEx(char *hostname, UINT port, UINT timeout)
|
||||
{
|
||||
return ConnectEx2(hostname, port, timeout, NULL);
|
||||
}
|
||||
SOCK *ConnectEx2(char *hostname, UINT port, UINT timeout, bool *cancel_flag)
|
||||
{
|
||||
return ConnectEx3(hostname, port, timeout, cancel_flag, NULL, NULL, false, true);
|
||||
}
|
||||
SOCK *ConnectEx3(char *hostname, UINT port, UINT timeout, bool *cancel_flag, char *nat_t_svc_name, UINT *nat_t_error_code, bool try_start_ssl, bool no_get_hostname)
|
||||
{
|
||||
return ConnectEx4(hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, NULL);
|
||||
}
|
||||
SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, char *nat_t_svc_name, UINT *nat_t_error_code, bool try_start_ssl, bool no_get_hostname, IP *ret_ip)
|
||||
{
|
||||
bool dummy = false;
|
||||
bool use_natt = false;
|
||||
char hostname_original[MAX_SIZE];
|
||||
char hint_str[MAX_SIZE];
|
||||
bool force_use_natt = false;
|
||||
UINT dummy_int = 0;
|
||||
IP dummy_ret_ip;
|
||||
// Validate arguments
|
||||
if (hostname == NULL || port == 0 || port >= 65536 || IsEmptyStr(hostname))
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
if (timeout == 0)
|
||||
{
|
||||
timeout = TIMEOUT_TCP_PORT_CHECK;
|
||||
}
|
||||
if (cancel_flag == NULL)
|
||||
{
|
||||
cancel_flag = &dummy;
|
||||
}
|
||||
if (nat_t_error_code == NULL)
|
||||
{
|
||||
nat_t_error_code = &dummy_int;
|
||||
}
|
||||
|
||||
Zero(&dummy_ret_ip, sizeof(IP));
|
||||
if (ret_ip == NULL)
|
||||
{
|
||||
ret_ip = &dummy_ret_ip;
|
||||
}
|
||||
|
||||
Zero(hint_str, sizeof(hint_str));
|
||||
StrCpy(hostname_original, sizeof(hostname_original), hostname);
|
||||
|
||||
use_natt = (IsEmptyStr(nat_t_svc_name) ? false : true);
|
||||
|
||||
if (use_natt)
|
||||
{
|
||||
// In case of using NAT-T, split host name if the '/' is included in the host name
|
||||
UINT i = SearchStrEx(hostname, "/", 0, false);
|
||||
|
||||
if (i == INFINITE)
|
||||
{
|
||||
// Not included
|
||||
StrCpy(hostname_original, sizeof(hostname_original), hostname);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Included
|
||||
StrCpy(hostname_original, sizeof(hostname_original), hostname);
|
||||
hostname_original[i] = 0;
|
||||
|
||||
// Force to use the NAT-T
|
||||
force_use_natt = true;
|
||||
|
||||
// Copy the hint string
|
||||
StrCpy(hint_str, sizeof(hint_str), hostname + i + 1);
|
||||
|
||||
if (StrCmpi(hint_str, "tcp") == 0 || StrCmpi(hint_str, "disable") == 0
|
||||
|| StrCmpi(hint_str, "disabled") == 0
|
||||
|| StrCmpi(hint_str, "no") == 0 || StrCmpi(hint_str, "none") == 0)
|
||||
{
|
||||
// Force not to use the NAT-T
|
||||
force_use_natt = false;
|
||||
use_natt = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
StrCpy(hostname_original, sizeof(hostname_original), hostname);
|
||||
}
|
||||
|
||||
LIST *iplist_v6 = NewListFast(NULL);
|
||||
LIST *iplist_v4 = NewListFast(NULL);
|
||||
|
||||
if (IsZeroIp(ret_ip) == false)
|
||||
{
|
||||
// Skip name resolution
|
||||
if (IsIP6(ret_ip))
|
||||
{
|
||||
AddHostIPAddressToList(iplist_v6, ret_ip);
|
||||
}
|
||||
else
|
||||
{
|
||||
AddHostIPAddressToList(iplist_v4, ret_ip);
|
||||
}
|
||||
|
||||
//Debug("Using cached IP address: %s = %r\n", hostname_original, ret_ip);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Forward resolution
|
||||
if (DnsResolveEx(iplist_v6, iplist_v4, hostname_original, 0, cancel_flag) == false)
|
||||
{
|
||||
FreeHostIPAddressList(iplist_v6);
|
||||
FreeHostIPAddressList(iplist_v4);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
CONNECT_SERIAL_PARAM p4, p6;
|
||||
EVENT *finish_event;
|
||||
THREAD *t4 = NULL;
|
||||
THREAD *t6 = NULL;
|
||||
UINT64 start_tick = Tick64();
|
||||
bool cancel_flag2 = false;
|
||||
bool no_delay_flag = false;
|
||||
|
||||
finish_event = NewEvent();
|
||||
|
||||
Zero(&p4, sizeof(p4));
|
||||
Zero(&p6, sizeof(p6));
|
||||
|
||||
// IPv6 connection thread
|
||||
if (LIST_NUM(iplist_v6) > 0)
|
||||
{
|
||||
p6.IpList = iplist_v6;
|
||||
p6.Port = port;
|
||||
p6.Timeout = timeout;
|
||||
StrCpy(p6.Hostname, sizeof(p6.Hostname), hostname);
|
||||
StrCpy(p6.Hostname_Original, sizeof(p6.Hostname_Original), hostname_original);
|
||||
p6.No_Get_Hostname = no_get_hostname;
|
||||
p6.CancelFlag = &cancel_flag2;
|
||||
p6.NoDelayFlag = &no_delay_flag;
|
||||
p6.FinishEvent = finish_event;
|
||||
p6.Tcp_TryStartSsl = try_start_ssl;
|
||||
p6.Ret_Ip = ret_ip;
|
||||
p6.RetryDelay = 250;
|
||||
p6.Delay = 0;
|
||||
t6 = NewThread(ConnectThreadForIPv6, &p6);
|
||||
}
|
||||
|
||||
// IPv4 connection thread
|
||||
if (LIST_NUM(iplist_v4) > 0)
|
||||
{
|
||||
p4.IpList = iplist_v4;
|
||||
p4.Port = port;
|
||||
p4.Timeout = timeout;
|
||||
StrCpy(p4.Hostname, sizeof(p4.Hostname), hostname);
|
||||
StrCpy(p4.Hostname_Original, sizeof(p4.Hostname_Original), hostname_original);
|
||||
StrCpy(p4.HintStr, sizeof(p4.HintStr), hint_str);
|
||||
p4.No_Get_Hostname = no_get_hostname;
|
||||
p4.CancelFlag = &cancel_flag2;
|
||||
p4.NoDelayFlag = &no_delay_flag;
|
||||
p4.NatT_ErrorCode = nat_t_error_code;
|
||||
StrCpy(p4.NatT_SvcName, sizeof(p4.NatT_SvcName), nat_t_svc_name);
|
||||
p4.FinishEvent = finish_event;
|
||||
p4.Tcp_TryStartSsl = try_start_ssl;
|
||||
p4.Use_NatT = use_natt;
|
||||
p4.Force_NatT = force_use_natt;
|
||||
p4.Ret_Ip = ret_ip;
|
||||
p4.RetryDelay = 250;
|
||||
p4.Delay = 250; // Delay by 250ms to prioritize IPv6 (RFC 6555 recommends 150-250ms, Chrome uses 300ms)
|
||||
t4 = NewThread(ConnectThreadForIPv4, &p4);
|
||||
}
|
||||
|
||||
if (t6 == NULL || t4 == NULL)
|
||||
{
|
||||
// No need to delay if there is only one thread
|
||||
no_delay_flag = true;
|
||||
}
|
||||
|
||||
while (true)
|
||||
{
|
||||
if (*cancel_flag)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
if ((t6 == NULL || p6.Finished) && (t4 == NULL || p4.Finished))
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
if ((p6.Finished && p6.Ok) || (p4.Finished && p4.Ok))
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
// This check must be placed last to avoid race condition with cancel flag
|
||||
if (no_delay_flag == false && (p6.Finished || p4.Finished))
|
||||
{
|
||||
no_delay_flag = true;
|
||||
}
|
||||
|
||||
Wait(finish_event, 25);
|
||||
}
|
||||
|
||||
cancel_flag2 = true;
|
||||
no_delay_flag = true;
|
||||
|
||||
WaitThread(t6, INFINITE);
|
||||
WaitThread(t4, INFINITE);
|
||||
ReleaseThread(t6);
|
||||
ReleaseThread(t4);
|
||||
ReleaseEvent(finish_event);
|
||||
FreeHostIPAddressList(iplist_v6);
|
||||
FreeHostIPAddressList(iplist_v4);
|
||||
|
||||
if (*cancel_flag)
|
||||
{
|
||||
// Abandon all the results because the user canceled
|
||||
Disconnect(p6.Sock);
|
||||
ReleaseSock(p6.Sock);
|
||||
Disconnect(p4.Sock);
|
||||
ReleaseSock(p4.Sock);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (p6.Ok)
|
||||
{
|
||||
Disconnect(p4.Sock);
|
||||
ReleaseSock(p4.Sock);
|
||||
|
||||
return p6.Sock;
|
||||
}
|
||||
|
||||
if (p4.Ok)
|
||||
{
|
||||
Disconnect(p6.Sock);
|
||||
ReleaseSock(p6.Sock);
|
||||
|
||||
return p4.Sock;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Add a protocol details strings
|
||||
void AddProtocolDetailsStr(char *dst, UINT dst_size, char *str)
|
||||
{
|
||||
|
||||
@ -795,6 +795,33 @@ struct RUDP_STACK
|
||||
USHORT Client_IcmpId, Client_IcmpSeqNo; // Sequence number and ICMP ID that is randomly generated on the client side
|
||||
};
|
||||
|
||||
// Data for the thread for serial connection attempts to a list of addresses
|
||||
struct CONNECT_SERIAL_PARAM
|
||||
{
|
||||
LIST *IpList;
|
||||
UINT Port;
|
||||
UINT Timeout;
|
||||
char Hostname[MAX_SIZE];
|
||||
char Hostname_Original[MAX_SIZE];
|
||||
char HintStr[MAX_SIZE];
|
||||
bool No_Get_Hostname;
|
||||
bool *CancelFlag;
|
||||
bool *NoDelayFlag;
|
||||
UINT *NatT_ErrorCode;
|
||||
char NatT_SvcName[MAX_SIZE];
|
||||
SOCK *Sock;
|
||||
bool Finished;
|
||||
bool Ok;
|
||||
UINT64 FinishedTick;
|
||||
EVENT *FinishEvent;
|
||||
UINT Delay;
|
||||
UINT RetryDelay;
|
||||
bool Tcp_TryStartSsl;
|
||||
bool Use_NatT;
|
||||
bool Force_NatT;
|
||||
IP *Ret_Ip;
|
||||
};
|
||||
|
||||
// Data for the thread for concurrent connection attempts for the R-UDP and TCP
|
||||
struct CONNECT_TCP_RUDP_PARAM
|
||||
{
|
||||
@ -895,6 +922,9 @@ bool DetectIsServerSoftEtherVPN(SOCK *s);
|
||||
void ConnectThreadForTcp(THREAD *thread, void *param);
|
||||
void ConnectThreadForRUDP(THREAD *thread, void *param);
|
||||
void ConnectThreadForOverDnsOrIcmp(THREAD *thread, void *param);
|
||||
void ConnectThreadForIPv4(THREAD *thread, void *param);
|
||||
void ConnectThreadForIPv6(THREAD *thread, void *param);
|
||||
SOCK *CreateTCPSock(SOCKET s, bool is_ipv6, IP *current_ip, bool no_get_hostname, char *hostname_original);
|
||||
SOCK *NewRUDPClientNatT(char *svc_name, IP *ip, UINT *error_code, UINT timeout, bool *cancel, char *hint_str, char *target_hostname);
|
||||
RUDP_STACK *NewRUDPServer(char *svc_name, RUDP_STACK_INTERRUPTS_PROC *proc_interrupts, RUDP_STACK_RPC_RECV_PROC *proc_rpc_recv, void *param, UINT port, bool no_natt_register, bool over_dns_mode, volatile UINT *natt_global_udp_port, UCHAR rand_port_id, IP *listen_ip);
|
||||
SOCK *NewRUDPClientDirect(char *svc_name, IP *ip, UINT port, UINT *error_code, UINT timeout, bool *cancel, SOCK *sock, SOCK_EVENT *sock_event, UINT local_port, bool over_dns_mode);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user