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Code Releases Activity

Bind outgoing connection to a specific IP address No.2

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This commit is contained in:
hiura
2023-08-08 18:14:22 +09:00
parent e4330ca71a
commit c2fe874865
14 changed files with 158 additions and 65 deletions
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94
src/Mayaqua/Network.c
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@ -13108,7 +13108,6 @@ SOCK *ListenEx63(UINT port, bool local_only, bool enable_ca, IP *listen_ip)
#ifdef OS_WIN32
if (enable_ca)
{
setsockopt(s, SOL_SOCKET, SO_CONDITIONAL_ACCEPT, (char *)&true_flag, sizeof(true_flag));
backlog = 1;
}
#endif
@ -13654,6 +13653,10 @@ char *PrintError(int ErrorCode)
{
char *Message;
switch (ErrorCode) {
case WSAEFAULT:
Message = "Bad address.";
break;
case WSAEWOULDBLOCK:
Message = "Resource temporarily unavailable.";
break;
@ -13666,6 +13669,10 @@ char *PrintError(int ErrorCode)
Message = "Operation already in progress.";
break;
case WSAEAFNOSUPPORT:
Message = "Address family not supported by protocol family.";
break;
case WSAEADDRINUSE:
Message = "Address already in use.";
break;
@ -13814,28 +13821,30 @@ void SetSockHighPriority(SOCK *s, bool flag)
}
// Bind the socket to IPv4 or IPV6 address
int bind_sock(SOCKET sock, IP* ip, UINT port)
int bind_sock(SOCKET sock, IP *ip, UINT port)
{
//char tmp[MAX_HOST_NAME_LEN + 1];
//memset(tmp, 0, sizeof(tmp));
//IPToStr(tmp, sizeof(tmp), ip);
//Debug("_____ bind_sock(): Binding... IP address %s:%d\n", tmp, port);
//Debug("bind_sock(): Binding... IP address %s:%d\n", tmp, port);
if (IsIP4(ip))
{
// Declare variables
struct sockaddr_in sockaddr_in;
struct in_addr in_addr;
Zero(&sockaddr_in, sizeof(sockaddr_in));
Zero(&in_addr, sizeof(in_addr));
IPToInAddr(&in_addr, ip);
// Set up the sockaddr structure
sockaddr_in.sin_family = AF_INET;
//inet_pton(AF_INET, tmp, &addr_in.sin_addr.s_addr);
sockaddr_in.sin_addr.s_addr = in_addr.s_addr;
IPToInAddr(&sockaddr_in.sin_addr, ip);
sockaddr_in.sin_port = htons((USHORT)port);
//inet_pton(AF_INET, tmp, &addr_in.sin_addr.s_addr);
UINT true_flag = 1;
// This only have enabled for UNIX system since there is a bug
// in the implementation of REUSEADDR in Windows OS
(void)setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&true_flag, sizeof(true_flag));
// Bind the socket using the information in the sockaddr structure
return (bind(sock, (struct sockaddr *)&sockaddr_in, sizeof(sockaddr_in)));
@ -13844,18 +13853,24 @@ int bind_sock(SOCKET sock, IP* ip, UINT port)
{
// Declare variables
struct sockaddr_in6 sockaddr_in;
struct in6_addr in_addr;
Zero(&sockaddr_in, sizeof(sockaddr_in));
Zero(&in_addr, sizeof(in_addr));
IPToInAddr6(&in_addr, ip);
// Set up the sockaddr structure
sockaddr_in.sin6_family = AF_INET6;
//inet_pton(AF_INET6, tmp, &sockaddr_in.sin6_addr.s6_bytes);
Copy(&sockaddr_in.sin6_addr, &in_addr, sizeof(in_addr));
IPToInAddr6(&sockaddr_in.sin6_addr, ip);
sockaddr_in.sin6_scope_id = ip->ipv6_scope_id;
sockaddr_in.sin6_port = htons((USHORT)port);
//inet_pton(AF_INET6, tmp, &sockaddr_in.sin6_addr.s6_bytes);
UINT true_flag = 1;
#ifdef OS_UNIX
// It is necessary to set the IPv6 Only flag on a UNIX system
(void)setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &true_flag, sizeof(true_flag));
#endif // OS_UNIX
// This only have enabled for UNIX system since there is a bug
// in the implementation of REUSEADDR in Windows OS
(void)setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)&true_flag, sizeof(true_flag));
// Bind the socket using the information in the sockaddr structure
return (bind(sock, (struct sockaddr *)&sockaddr_in, sizeof(sockaddr_in)));
@ -13890,6 +13905,12 @@ SOCKET BindConnectTimeoutIPv4(IP* localIP, UINT localport, IP* ip, UINT port, UI
// Top of Bind outgoing connection
if (s != INVALID_SOCKET) {
int ier;
IP tmpIP;
if (localIP == BIND_LOCALIP_NULL) {
StrToIP(&tmpIP, "0.0.0.0"); // A NULL address for the argument "localIP" is treated as if "0::0" in IPV4 was specified.
localIP = &tmpIP;
}
if ((IsZeroIP(localIP) == false) || (localport != 0)) {
@ -14177,8 +14198,8 @@ void ConnectThreadForIPv4(THREAD* thread, void* param)
{
return;
}
StrToIP(&p->LocalIP, "0.0.0.0");
p->LocalPort = 0;
p->LocalIP = BIND_LOCALIP_NULL;
p->LocalPort = BIND_LOCALPORT_NULL;
return BindConnectThreadForIPv4(thread, param);
}
@ -14238,7 +14259,7 @@ void BindConnectThreadForIPv4(THREAD *thread, void *param)
{
// Normal connection without using NAT-T
// s = ConnectTimeoutIPv4(ip, p->Port, p->Timeout, p->CancelFlag);
s = BindConnectTimeoutIPv4(&p->LocalIP, p->LocalPort, ip, p->Port, p->Timeout, p->CancelFlag);
s = BindConnectTimeoutIPv4(p->LocalIP, p->LocalPort, ip, p->Port, p->Timeout, p->CancelFlag);
if (s != INVALID_SOCKET)
{
@ -14547,8 +14568,8 @@ void ConnectThreadForIPv6(THREAD* thread, void* param)
{
return;
}
StrToIP(&p->LocalIP, "0::0");
p->LocalPort = 0;
p->LocalIP = BIND_LOCALIP_NULL;
p->LocalPort = BIND_LOCALPORT_NULL;
return BindConnectThreadForIPv6(thread, param);
}
@ -14613,11 +14634,17 @@ void BindConnectThreadForIPv6(THREAD* thread, void* param)
// Top of Bind outgoing connection
if (s != INVALID_SOCKET){
int ier;
IP tmpIP;
if ((IsZeroIP(&p->LocalIP) == false) || (p->LocalPort != 0)){
if (p->LocalIP == BIND_LOCALIP_NULL) {
StrToIP(&tmpIP, "0::0"); // A NULL address for the argument "p->LocalIP" is treated as if "0::0" in IPV6 was specified.
p->LocalIP = &tmpIP;
}
if ((IsZeroIP(p->LocalIP) == false) || (p->LocalPort != 0)){
// Bind the socket
if (bind_sock(s, &p->LocalIP, p->LocalPort) != 0) {
if (bind_sock(s, p->LocalIP, p->LocalPort) != 0) {
#ifdef OS_WIN32
ier = WSAGetLastError();
Debug("IPv6 bind() failed with error: %d %s\n", ier, PrintError(ier));
@ -14864,10 +14891,14 @@ SOCK *BindConnectEx5(IP *localIP, UINT localport, char *hostname, UINT port, UIN
{
p6.IpList = iplist_v6;
//ZeroIP6(&p6.LocalIP);
Zero(&p6.LocalIP, sizeof(p6.LocalIP)); // Zero IP6 must be used when argument localIP is NULL
CopyIP(&p6.LocalIP, localIP);
p6.LocalPort = localport;
if (localIP == BIND_LOCALIP_NULL) {
p6.LocalIP = BIND_LOCALIP_NULL; // Make the NULL address passing through
}
else {
CopyIP(&p6.LocalIP_Cache, localIP);
p6.LocalIP = &p6.LocalIP_Cache;
}
p6.LocalPort = localport;
p6.Port = port;
p6.Timeout = timeout;
@ -14891,9 +14922,14 @@ SOCK *BindConnectEx5(IP *localIP, UINT localport, char *hostname, UINT port, UIN
{
p4.IpList = iplist_v4;
ZeroIP4(&p4.LocalIP); // Zero IP4 must be used when argument localIP is NULL
CopyIP(&p4.LocalIP, localIP);
p4.LocalPort = localport;
if (localIP == BIND_LOCALIP_NULL) {
p4.LocalIP = BIND_LOCALIP_NULL; // Make the NULL address passing through
}
else {
CopyIP(&p4.LocalIP_Cache, localIP);
p4.LocalIP = &p4.LocalIP_Cache;
}
p4.LocalPort = localport;
p4.Port = port;
p4.Timeout = timeout;