Mercurial > hg > nginx-quic
view src/os/win32/ngx_socket.h @ 8797:1e2f4e9c8195 quic
QUIC: reworked migration handling.
The quic connection now holds active, backup and probe paths instead
of sockets. The number of migration paths is now limited and cannot
be inflated by a bad client or an attacker.
The client id is now associated with path rather than socket. This allows
to simplify processing of output and connection ids handling.
New migration abandons any previously started migrations. This allows to
free consumed client ids and request new for use in future migrations and
make progress in case when connection id limit is hit during migration.
A path now can be revalidated without losing its state.
The patch also fixes various issues with NAT rebinding case handling:
- paths are now validated (previously, there was no validation
and paths were left in limited state)
- attempt to reuse id on different path is now again verified
(this was broken in 40445fc7c403)
- former path is now validated in case of apparent migration
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Wed, 19 Jan 2022 22:39:24 +0300 |
parents | efd71d49bde0 |
children | 96bdda15413a |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SOCKET_H_INCLUDED_ #define _NGX_SOCKET_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_WRITE_SHUTDOWN SD_SEND typedef SOCKET ngx_socket_t; typedef int socklen_t; #define ngx_socket(af, type, proto) \ WSASocketW(af, type, proto, NULL, 0, WSA_FLAG_OVERLAPPED) #define ngx_socket_n "WSASocketW()" int ngx_nonblocking(ngx_socket_t s); int ngx_blocking(ngx_socket_t s); #define ngx_nonblocking_n "ioctlsocket(FIONBIO)" #define ngx_blocking_n "ioctlsocket(!FIONBIO)" int ngx_socket_nread(ngx_socket_t s, int *n); #define ngx_socket_nread_n "ioctlsocket(FIONREAD)" #define ngx_shutdown_socket shutdown #define ngx_shutdown_socket_n "shutdown()" #define ngx_close_socket closesocket #define ngx_close_socket_n "closesocket()" #ifndef WSAID_ACCEPTEX typedef BOOL (PASCAL FAR * LPFN_ACCEPTEX)( IN SOCKET sListenSocket, IN SOCKET sAcceptSocket, IN PVOID lpOutputBuffer, IN DWORD dwReceiveDataLength, IN DWORD dwLocalAddressLength, IN DWORD dwRemoteAddressLength, OUT LPDWORD lpdwBytesReceived, IN LPOVERLAPPED lpOverlapped ); #define WSAID_ACCEPTEX \ {0xb5367df1,0xcbac,0x11cf,{0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92}} #endif #ifndef WSAID_GETACCEPTEXSOCKADDRS typedef VOID (PASCAL FAR * LPFN_GETACCEPTEXSOCKADDRS)( IN PVOID lpOutputBuffer, IN DWORD dwReceiveDataLength, IN DWORD dwLocalAddressLength, IN DWORD dwRemoteAddressLength, OUT struct sockaddr **LocalSockaddr, OUT LPINT LocalSockaddrLength, OUT struct sockaddr **RemoteSockaddr, OUT LPINT RemoteSockaddrLength ); #define WSAID_GETACCEPTEXSOCKADDRS \ {0xb5367df2,0xcbac,0x11cf,{0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92}} #endif #ifndef WSAID_TRANSMITFILE #ifndef TF_DISCONNECT #define TF_DISCONNECT 1 #define TF_REUSE_SOCKET 2 #define TF_WRITE_BEHIND 4 #define TF_USE_DEFAULT_WORKER 0 #define TF_USE_SYSTEM_THREAD 16 #define TF_USE_KERNEL_APC 32 typedef struct _TRANSMIT_FILE_BUFFERS { LPVOID Head; DWORD HeadLength; LPVOID Tail; DWORD TailLength; } TRANSMIT_FILE_BUFFERS, *PTRANSMIT_FILE_BUFFERS, FAR *LPTRANSMIT_FILE_BUFFERS; #endif typedef BOOL (PASCAL FAR * LPFN_TRANSMITFILE)( IN SOCKET hSocket, IN HANDLE hFile, IN DWORD nNumberOfBytesToWrite, IN DWORD nNumberOfBytesPerSend, IN LPOVERLAPPED lpOverlapped, IN LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers, IN DWORD dwReserved ); #define WSAID_TRANSMITFILE \ {0xb5367df0,0xcbac,0x11cf,{0x95,0xca,0x00,0x80,0x5f,0x48,0xa1,0x92}} #endif #ifndef WSAID_TRANSMITPACKETS /* OpenWatcom has a swapped TP_ELEMENT_FILE and TP_ELEMENT_MEMORY definition */ #ifndef TP_ELEMENT_FILE #ifdef _MSC_VER #pragma warning(disable:4201) /* Nonstandard extension, nameless struct/union */ #endif typedef struct _TRANSMIT_PACKETS_ELEMENT { ULONG dwElFlags; #define TP_ELEMENT_MEMORY 1 #define TP_ELEMENT_FILE 2 #define TP_ELEMENT_EOP 4 ULONG cLength; union { struct { LARGE_INTEGER nFileOffset; HANDLE hFile; }; PVOID pBuffer; }; } TRANSMIT_PACKETS_ELEMENT, *PTRANSMIT_PACKETS_ELEMENT, FAR *LPTRANSMIT_PACKETS_ELEMENT; #ifdef _MSC_VER #pragma warning(default:4201) #endif #endif typedef BOOL (PASCAL FAR * LPFN_TRANSMITPACKETS) ( SOCKET hSocket, TRANSMIT_PACKETS_ELEMENT *lpPacketArray, DWORD nElementCount, DWORD nSendSize, LPOVERLAPPED lpOverlapped, DWORD dwFlags ); #define WSAID_TRANSMITPACKETS \ {0xd9689da0,0x1f90,0x11d3,{0x99,0x71,0x00,0xc0,0x4f,0x68,0xc8,0x76}} #endif #ifndef WSAID_CONNECTEX typedef BOOL (PASCAL FAR * LPFN_CONNECTEX) ( IN SOCKET s, IN const struct sockaddr FAR *name, IN int namelen, IN PVOID lpSendBuffer OPTIONAL, IN DWORD dwSendDataLength, OUT LPDWORD lpdwBytesSent, IN LPOVERLAPPED lpOverlapped ); #define WSAID_CONNECTEX \ {0x25a207b9,0xddf3,0x4660,{0x8e,0xe9,0x76,0xe5,0x8c,0x74,0x06,0x3e}} #endif #ifndef WSAID_DISCONNECTEX typedef BOOL (PASCAL FAR * LPFN_DISCONNECTEX) ( IN SOCKET s, IN LPOVERLAPPED lpOverlapped, IN DWORD dwFlags, IN DWORD dwReserved ); #define WSAID_DISCONNECTEX \ {0x7fda2e11,0x8630,0x436f,{0xa0,0x31,0xf5,0x36,0xa6,0xee,0xc1,0x57}} #endif extern LPFN_ACCEPTEX ngx_acceptex; extern LPFN_GETACCEPTEXSOCKADDRS ngx_getacceptexsockaddrs; extern LPFN_TRANSMITFILE ngx_transmitfile; extern LPFN_TRANSMITPACKETS ngx_transmitpackets; extern LPFN_CONNECTEX ngx_connectex; extern LPFN_DISCONNECTEX ngx_disconnectex; #if (NGX_HAVE_POLL && !defined POLLIN) /* * WSAPoll() is only available if _WIN32_WINNT >= 0x0600. * If it is not available during compilation, we try to * load it dynamically at runtime. */ #define NGX_LOAD_WSAPOLL 1 #define POLLRDNORM 0x0100 #define POLLRDBAND 0x0200 #define POLLIN (POLLRDNORM | POLLRDBAND) #define POLLPRI 0x0400 #define POLLWRNORM 0x0010 #define POLLOUT (POLLWRNORM) #define POLLWRBAND 0x0020 #define POLLERR 0x0001 #define POLLHUP 0x0002 #define POLLNVAL 0x0004 typedef struct pollfd { SOCKET fd; SHORT events; SHORT revents; } WSAPOLLFD, *PWSAPOLLFD, FAR *LPWSAPOLLFD; typedef int (WSAAPI *ngx_wsapoll_pt)( LPWSAPOLLFD fdArray, ULONG fds, INT timeout ); extern ngx_wsapoll_pt WSAPoll; extern ngx_uint_t ngx_have_wsapoll; #endif int ngx_tcp_push(ngx_socket_t s); #define ngx_tcp_push_n "tcp_push()" #endif /* _NGX_SOCKET_H_INCLUDED_ */