mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2025-07-08 00:34:57 +03:00
bind outgoing connection
This commit is contained in:
hiura
@ -13634,6 +13634,54 @@ int connect_timeout(SOCKET s, struct sockaddr *addr, int size, int timeout, bool
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}
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}
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#else
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#if 0
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LPSTR PrintError(int ErrorCode)
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{
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static char Message[1024];
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// If this program was multithreaded, we'd want to use
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// FORMAT_MESSAGE_ALLOCATE_BUFFER instead of a static buffer here.
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// (And of course, free the buffer when we were done with it)
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FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS |
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FORMAT_MESSAGE_MAX_WIDTH_MASK, NULL, ErrorCode,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPSTR)Message, 1024, NULL);
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return Message;
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}
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#else
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char *PrintError(int ErrorCode)
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{
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char *Message;
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switch (ErrorCode) {
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case WSAEWOULDBLOCK:
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Message = "Resource temporarily unavailable.";
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break;
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case WSAEINPROGRESS:
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Message = "Operation now in progress.";
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break;
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case WSAEALREADY:
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Message = "Operation already in progress.";
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break;
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case WSAEADDRINUSE:
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Message = "Address already in use.";
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break;
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case WSAEADDRNOTAVAIL:
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Message = "Cannot assign requested address.";
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break;
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default:
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Message = "";
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break;
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}
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return Message;
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}
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#endif
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// Connection with timeout (Win32 version)
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int connect_timeout(SOCKET s, struct sockaddr *addr, int size, int timeout, bool *cancel_flag)
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{
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@ -13765,8 +13813,63 @@ void SetSockHighPriority(SOCK *s, bool flag)
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SetSockTos(s, (flag ? 16 : 0));
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}
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// Bind the socket to IPv4 or IPV6 address
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int bind_sock(SOCKET sock, IP* ip, UINT port)
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{
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//char tmp[MAX_HOST_NAME_LEN + 1];
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//IPToStr(tmp, sizeof(tmp), ip);
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//Debug("_____ bind_sock(): Binding... IP address %s:%d\n", tmp, port);
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if (IsIP4(ip))
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{
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// Declare variables
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struct sockaddr_in sockaddr_in;
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struct in_addr in_addr;
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Zero(&sockaddr_in, sizeof(sockaddr_in));
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Zero(&in_addr, sizeof(in_addr));
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IPToInAddr(&in_addr, ip);
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// Set up the sockaddr structure
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sockaddr_in.sin_family = AF_INET;
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//inet_pton(AF_INET, tmp, &addr_in.sin_addr.s_addr);
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sockaddr_in.sin_addr.s_addr = in_addr.s_addr;
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sockaddr_in.sin_port = htons((USHORT)port);
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// Bind the socket using the information in the sockaddr structure
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return (bind(sock, (struct sockaddr *)&sockaddr_in, sizeof(sockaddr_in)));
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}
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else
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{
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// Declare variables
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struct sockaddr_in6 sockaddr_in;
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struct in6_addr in_addr;
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Zero(&sockaddr_in, sizeof(sockaddr_in));
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Zero(&in_addr, sizeof(in_addr));
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IPToInAddr6(&in_addr, ip);
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// Set up the sockaddr structure
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sockaddr_in.sin6_family = AF_INET6;
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//inet_pton(AF_INET6, tmp, &sockaddr_in.sin6_addr.s6_bytes);
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Copy(&sockaddr_in.sin6_addr, &in_addr, sizeof(in_addr));
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sockaddr_in.sin6_port = htons((USHORT)port);
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// Bind the socket using the information in the sockaddr structure
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return (bind(sock, (struct sockaddr *)&sockaddr_in, sizeof(sockaddr_in)));
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}
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}
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// Connect to the IPv4 host using a socket
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SOCKET ConnectTimeoutIPv4(IP *ip, UINT port, UINT timeout, bool *cancel_flag)
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SOCKET ConnectTimeoutIPv4(IP* ip, UINT port, UINT timeout, bool* cancel_flag)
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{
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return BindConnectTimeoutIPv4(BIND_LOCALIP_NULL, BIND_LOCALPORT_NULL, ip, port, timeout, cancel_flag);
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}
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// Connect to the IPv4 host using a socket
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SOCKET BindConnectTimeoutIPv4(IP* localIP, UINT localport, IP* ip, UINT port, UINT timeout, bool* cancel_flag)
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{
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SOCKET s;
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struct sockaddr_in sockaddr4;
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@ -13783,6 +13886,28 @@ SOCKET ConnectTimeoutIPv4(IP *ip, UINT port, UINT timeout, bool *cancel_flag)
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// Socket creation
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s = socket(AF_INET, SOCK_STREAM, 0);
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// Top of Bind outgoing connection
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if (s != INVALID_SOCKET) {
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int ier;
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if ((IsZeroIP(localIP) == false) || (localport != 0)) {
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// Bind the socket
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if (bind_sock(s, localIP, localport) != 0) {
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#ifdef OS_WIN32
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ier = WSAGetLastError();
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Debug("IPv4 bind() failed with error: %d %s\n", ier, PrintError(ier));
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#else
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Debug("IPv4 bind() failed with error: %d %s\n", errno, strerror(errno));
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#endif
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closesocket(s);
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s = INVALID_SOCKET;
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}
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}
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}
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// Bottom of Bind outgoing connection
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if (s != INVALID_SOCKET)
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{
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// Connection
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@ -14045,7 +14170,21 @@ void ConnectThreadForRUDP(THREAD *thread, void *param)
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}
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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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void ConnectThreadForIPv4(THREAD* thread, void* param)
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{
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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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StrToIP(&p->LocalIP, "0.0.0.0");
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p->LocalPort = 0;
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return BindConnectThreadForIPv4(thread, param);
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}
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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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void BindConnectThreadForIPv4(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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@ -14098,7 +14237,8 @@ void ConnectThreadForIPv4(THREAD *thread, void *param)
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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(ip, p->Port, p->Timeout, p->CancelFlag);
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// s = ConnectTimeoutIPv4(ip, p->Port, p->Timeout, p->CancelFlag);
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s = BindConnectTimeoutIPv4(&p->LocalIP, p->LocalPort, ip, p->Port, p->Timeout, p->CancelFlag);
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if (s != INVALID_SOCKET)
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{
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@ -14400,7 +14540,21 @@ void ConnectThreadForIPv4(THREAD *thread, void *param)
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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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void ConnectThreadForIPv6(THREAD* thread, void* param)
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{
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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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StrToIP(&p->LocalIP, "0::0");
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p->LocalPort = 0;
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return BindConnectThreadForIPv6(thread, param);
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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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void BindConnectThreadForIPv6(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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@ -14455,6 +14609,28 @@ void ConnectThreadForIPv6(THREAD *thread, void *param)
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// Socket creation
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s = socket(AF_INET6, SOCK_STREAM, 0);
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// Top of Bind outgoing connection
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if (s != INVALID_SOCKET){
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int ier;
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if ((IsZeroIP(&p->LocalIP) == false) || (p->LocalPort != 0)){
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// Bind the socket
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if (bind_sock(s, &p->LocalIP, p->LocalPort) != 0) {
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#ifdef OS_WIN32
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ier = WSAGetLastError();
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Debug("IPv6 bind() failed with error: %d %s\n", ier, PrintError(ier));
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#else
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Debug("IPv6 bind() failed with error: %d %s\n", errno, strerror(errno));
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#endif
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closesocket(s);
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s = INVALID_SOCKET;
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}
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}
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}
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// Bottom of Bind outgoing connection
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if (s != INVALID_SOCKET)
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{
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// Connection
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@ -14580,6 +14756,18 @@ SOCK *ConnectEx4(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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return ConnectEx5(hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, NULL, NULL, NULL, ret_ip);
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}
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SOCK *ConnectEx5(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, SSL_VERIFY_OPTION *ssl_option, UINT *ssl_err, char *hint_str, IP *ret_ip)
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{
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return BindConnectEx5(BIND_LOCALIP_NULL, BIND_LOCALPORT_NULL, hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, ssl_option, ssl_err, hint_str, ret_ip);
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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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SOCK *BindConnectEx4(IP *localIP, UINT localport, 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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// return ConnectEx5(hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, NULL, NULL, NULL, ret_ip);
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return BindConnectEx5(localIP, localport, hostname, port, timeout, cancel_flag, nat_t_svc_name, nat_t_error_code, try_start_ssl, no_get_hostname, NULL, NULL, NULL, ret_ip);
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}
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//SOCK *ConnectEx5(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, SSL_VERIFY_OPTION *ssl_option, UINT *ssl_err, char *hint_str, IP *ret_ip)
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SOCK *BindConnectEx5(IP *localIP, UINT localport, 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, SSL_VERIFY_OPTION *ssl_option, UINT *ssl_err, char *hint_str, IP *ret_ip)
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{
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bool dummy = false;
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bool use_natt = false;
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@ -14675,6 +14863,12 @@ SOCK *ConnectEx5(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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if (LIST_NUM(iplist_v6) > 0)
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{
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p6.IpList = iplist_v6;
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//ZeroIP6(&p6.LocalIP);
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Zero(&p6.LocalIP, sizeof(p6.LocalIP)); // Zero IP6 must be used when argument localIP is NULL
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CopyIP(&p6.LocalIP, localIP);
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p6.LocalPort = localport;
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p6.Port = port;
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p6.Timeout = timeout;
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StrCpy(p6.Hostname, sizeof(p6.Hostname), hostname);
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@ -14688,13 +14882,19 @@ SOCK *ConnectEx5(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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p6.Ret_Ip = &ret_ip6;
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p6.RetryDelay = 250;
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p6.Delay = 0;
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t6 = NewThread(ConnectThreadForIPv6, &p6);
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// t6 = NewThread(ConnectThreadForIPv6, &p6);
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t6 = NewThread(BindConnectThreadForIPv6, &p6); // For binding a socket
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}
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// IPv4 connection thread
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if (LIST_NUM(iplist_v4) > 0)
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{
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p4.IpList = iplist_v4;
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ZeroIP4(&p4.LocalIP); // Zero IP4 must be used when argument localIP is NULL
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CopyIP(&p4.LocalIP, localIP);
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p4.LocalPort = localport;
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p4.Port = port;
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p4.Timeout = timeout;
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StrCpy(p4.Hostname, sizeof(p4.Hostname), hostname);
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@ -14713,7 +14913,8 @@ SOCK *ConnectEx5(char *hostname, UINT port, UINT timeout, bool *cancel_flag, cha
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p4.Ret_Ip = &ret_ip4;
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p4.RetryDelay = 250;
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p4.Delay = 250; // Delay by 250ms to prioritize IPv6 (RFC 6555 recommends 150-250ms, Chrome uses 300ms)
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t4 = NewThread(ConnectThreadForIPv4, &p4);
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// t4 = NewThread(ConnectThreadForIPv4, &p4);
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t4 = NewThread(BindConnectThreadForIPv4, &p4); // For binding a socket
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}
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if (t6 == NULL || t4 == NULL)
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