MITSUNARI Shigeo
5 years ago
commit
e769bd6cea
@ -0,0 +1,144 @@ |
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#pragma once |
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/**
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@file |
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@brief atomic operation |
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@author MITSUNARI Shigeo(@herumi) |
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@author MITSUNARI Shigeo |
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*/ |
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#include <cybozu/inttype.hpp> |
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#ifdef _WIN32 |
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#include <winsock2.h> |
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#include <windows.h> |
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#include <intrin.h> |
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#else |
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#include <emmintrin.h> |
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#endif |
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namespace cybozu { |
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namespace atomic_local { |
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template<size_t S> |
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struct Tag {}; |
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template<> |
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struct Tag<4> { |
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template<class T> |
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static inline T AtomicAddSub(T *p, T y) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedExchangeAdd((long*)p, (long)y); |
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#else |
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return static_cast<T>(__sync_fetch_and_add(p, y)); |
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#endif |
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} |
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template<class T> |
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static inline T AtomicCompareExchangeSub(T *p, T newValue, T oldValue) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedCompareExchange((long*)p, (long)newValue, (long)oldValue); |
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#else |
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return static_cast<T>(__sync_val_compare_and_swap(p, oldValue, newValue)); |
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#endif |
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} |
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template<class T> |
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static inline T AtomicExchangeSub(T *p, T newValue) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedExchange((long*)p, (long)newValue); |
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#else |
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return static_cast<T>(__sync_lock_test_and_set(p, newValue)); |
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#endif |
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} |
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}; |
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template<> |
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struct Tag<8> { |
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#if (CYBOZU_OS_BIT == 64) |
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template<class T> |
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static inline T AtomicAddSub(T *p, T y) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedExchangeAdd64((int64_t*)p, (int64_t)y); |
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#else |
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return static_cast<T>(__sync_fetch_and_add(p, y)); |
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#endif |
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} |
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#endif |
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template<class T> |
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static inline T AtomicCompareExchangeSub(T *p, T newValue, T oldValue) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedCompareExchange64((int64_t*)p, (int64_t)newValue, (int64_t)oldValue); |
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#else |
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return static_cast<T>(__sync_val_compare_and_swap(p, oldValue, newValue)); |
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#endif |
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} |
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#if (CYBOZU_OS_BIT == 64) |
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template<class T> |
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static inline T AtomicExchangeSub(T *p, T newValue) |
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{ |
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#ifdef _WIN32 |
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return (T)_InterlockedExchange64((int64_t*)p, (int64_t)newValue); |
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#else |
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return static_cast<T>(__sync_lock_test_and_set(p, newValue)); |
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#endif |
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} |
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#endif |
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}; |
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} // atomic_local
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/**
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atomic operation |
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see http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
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http://msdn.microsoft.com/en-us/library/ms683504(VS.85).aspx
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*/ |
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/**
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tmp = *p; |
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*p += y; |
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return tmp; |
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*/ |
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template<class T> |
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T AtomicAdd(T *p, T y) |
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{ |
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return atomic_local::Tag<sizeof(T)>::AtomicAddSub(p, y); |
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} |
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/**
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tmp = *p; |
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if (*p == oldValue) *p = newValue; |
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return tmp; |
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*/ |
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template<class T> |
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T AtomicCompareExchange(T *p, T newValue, T oldValue) |
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{ |
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return atomic_local::Tag<sizeof(T)>::AtomicCompareExchangeSub(p, newValue, oldValue); |
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} |
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/**
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tmp = *p; |
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*p = newValue; |
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return tmp; |
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*/ |
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template<class T> |
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T AtomicExchange(T *p, T newValue) |
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{ |
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return atomic_local::Tag<sizeof(T)>::AtomicExchangeSub(p, newValue); |
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} |
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inline void mfence() |
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{ |
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#ifdef _MSC_VER |
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MemoryBarrier(); |
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#else |
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_mm_mfence(); |
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#endif |
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} |
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} // cybozu
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@ -0,0 +1,778 @@ |
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#pragma once |
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/**
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@file |
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@brief tiny socket class
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@author MITSUNARI Shigeo(@herumi) |
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@author MITSUNARI Shigeo |
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*/ |
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#include <errno.h> |
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#include <assert.h> |
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#include <stdio.h> |
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#ifdef _WIN32 |
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#include <winsock2.h> |
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#include <ws2tcpip.h> // for socklen_t |
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#pragma comment(lib, "ws2_32.lib") |
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#pragma comment(lib, "iphlpapi.lib") |
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#pragma warning(push) |
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#pragma warning(disable : 4127) // constant condition
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#else |
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#include <unistd.h> |
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#include <sys/socket.h> |
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#include <sys/ioctl.h> |
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#include <netinet/tcp.h> |
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#include <arpa/inet.h> |
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#include <netdb.h> |
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#include <memory.h> |
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#include <signal.h> |
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#endif |
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#ifndef NDEBUG |
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#include <stdio.h> |
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#endif |
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#include <cybozu/atomic.hpp> |
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#include <cybozu/exception.hpp> |
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#include <cybozu/itoa.hpp> |
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#include <string> |
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#ifdef __linux__ |
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// #define CYBOZU_SOCKET_USE_EPOLL
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#include <sys/epoll.h> |
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#endif |
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namespace cybozu { |
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#ifdef _MSC_VER |
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struct NetErrorNo : public cybozu::ErrorNo { |
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NetErrorNo(NativeErrorNo err) |
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: cybozu::ErrorNo(err) |
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{ |
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} |
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NetErrorNo() |
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: cybozu::ErrorNo(WSAGetLastError()) |
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{ |
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} |
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}; |
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#else |
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typedef cybozu::ErrorNo NetErrorNo; |
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#endif |
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#ifdef CYBOZU_SOCKET_USE_EPOLL |
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namespace experimental { |
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struct EpollEvent { |
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struct epoll_event ev_; |
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EpollEvent() |
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{ |
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memset(&ev_, 0, sizeof(ev_)); |
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} |
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void set(int fd, uint32_t events = EPOLLIN) |
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{ |
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ev_.events = events; |
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ev_.data.fd = fd; |
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} |
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int getFd() const { return ev_.data.fd; } |
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}; |
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class Epoll { |
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int efd_; |
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bool verify(const char *msg, int ret, int *err) const { |
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if (ret >= 0) return true; |
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if (err == 0) throw cybozu::Exception(msg) << cybozu::NetErrorNo(); |
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*err = errno; |
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return false; |
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} |
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public: |
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Epoll() : efd_(-1) {} |
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bool init(int *err = 0) |
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{ |
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efd_ = ::epoll_create1(0); |
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return verify("Epoll:init", efd_, err); |
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} |
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~Epoll() |
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{ |
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if (efd_ >= 0) ::close(efd_); |
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} |
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/*
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throw if err == NULL |
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*/ |
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bool ctrl(int op, int fd, EpollEvent *ev, int *err = 0) { |
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int ret = ::epoll_ctl(efd_, op, fd, &ev->ev_); |
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return verify("Epoll:ctrl", ret, err); |
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} |
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bool add(int fd, uint32_t events = EPOLLIN, int *err = 0) { |
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EpollEvent ev; |
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ev.set(fd, events); |
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return ctrl(EPOLL_CTL_ADD, fd, &ev, err); |
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} |
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bool del(int fd, int *err = 0) { |
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return ctrl(EPOLL_CTL_DEL, fd, NULL, err); |
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} |
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/*
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msec : 0 : block |
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*/ |
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int wait(EpollEvent *ev, int maxEv, int msec = 0) |
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{ |
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/*
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0 : return immediately |
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-1 : block indefinitely |
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*/ |
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if (msec == 0) { |
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msec = -1; |
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} else if (msec == -1) { |
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msec = 0; |
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} |
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int ret = ::epoll_wait(efd_, &ev->ev_, maxEv, msec); |
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if (ret == 0) return 0; // timeout
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if (ret < 0) return -errno; |
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return ret; |
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} |
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}; |
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struct AutoLock { |
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Epoll& ep_; |
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int fd_; |
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AutoLock(Epoll& ep, int fd, int events = EPOLLIN) |
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: ep_(ep) |
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, fd_(fd) |
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{ |
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ep_.add(fd, events); |
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} |
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~AutoLock() |
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{ |
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int err; |
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ep_.del(fd_, &err); |
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} |
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}; |
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} // cybozu::experimental
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#endif |
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namespace ssl { |
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class ClientSocket; |
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}; |
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namespace socket_local { |
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#ifdef _WIN32 |
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typedef SOCKET SocketHandle; |
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#else |
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typedef int SocketHandle; |
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#endif |
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struct InitTerm { |
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/** call once for init */ |
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InitTerm() |
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{ |
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#ifdef _WIN32 |
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WSADATA data; |
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int err = ::WSAStartup(MAKEWORD(2, 2), &data); |
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if (err) { |
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fprintf(stderr, "WSAStartup failed : %d\n", err); |
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exit(1); |
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} |
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#else |
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::signal(SIGPIPE, SIG_IGN); |
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#endif |
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} |
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/** call once for term */ |
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~InitTerm() |
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{ |
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#ifdef _WIN32 |
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::WSACleanup(); |
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#endif |
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} |
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void dummyCall() { } |
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}; |
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template<int dummy = 0> |
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struct InstanceIsHere { static InitTerm it_; }; |
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template<int dummy> |
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InitTerm InstanceIsHere<dummy>::it_; |
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struct DummyCall { |
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DummyCall() { InstanceIsHere<>::it_.dummyCall(); } |
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}; |
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} // cybozu::socket_local
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class SocketAddr { |
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union { |
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// http://www.coins.tsukuba.ac.jp/~syspro/2010/No6_files/sockaddr.html
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struct sockaddr sa; /* 16byte */ |
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struct sockaddr_in v4; /* 16byte */ |
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struct sockaddr_in6 v6; |
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} addr_; |
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socklen_t addrlen_; |
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int family_; |
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friend class Socket; |
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void verify() // call in only Socket::accept
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{ |
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if (addrlen_ == sizeof(addr_.v4) && addr_.sa.sa_family == AF_INET) { |
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family_ = AF_INET; |
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return; |
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} |
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if (addrlen_ == sizeof(addr_.v6) && addr_.sa.sa_family == AF_INET6) { |
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family_ = AF_INET6; |
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return; |
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} |
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throw cybozu::Exception("cybozu:SocketAddr:verify") << addrlen_; |
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} |
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public: |
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SocketAddr() |
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: addrlen_(0) |
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, family_(0) |
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{ |
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} |
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SocketAddr(const std::string& address, uint16_t port, bool forceIpV6 = false) |
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{ |
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set(address, port, forceIpV6); |
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} |
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void set(const std::string& address, uint16_t port, bool forceIpV6 = false) |
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{ |
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char portStr[16]; |
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CYBOZU_SNPRINTF(portStr, sizeof(portStr), "%d", port); |
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memset(&addr_, 0, sizeof(addr_)); |
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addrlen_ = 0; |
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family_ = 0; |
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struct addrinfo *result = 0; |
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struct addrinfo hints; |
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memset(&hints, 0, sizeof(struct addrinfo)); |
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hints.ai_family = AF_INET; |
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hints.ai_socktype = SOCK_STREAM; |
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hints.ai_protocol = IPPROTO_TCP; |
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hints.ai_flags = AI_NUMERICSERV; // AI_PASSIVE;
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const int s = getaddrinfo(address.c_str(), portStr, &hints, &result); |
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// s == EAI_AGAIN
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if (s || forceIpV6) { |
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hints.ai_family = AF_INET6; |
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hints.ai_flags |= AI_V4MAPPED; |
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if (getaddrinfo(address.c_str(), portStr, &hints, &result)) { |
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goto ERR_EXIT; |
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} |
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} |
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{ |
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bool found = false; |
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for (const struct addrinfo *p = result; p; p = p->ai_next) { |
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const int family = p->ai_family; |
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if (family == hints.ai_family) { |
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if (p->ai_addrlen > sizeof(addr_)) { |
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break; |
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} |
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memcpy(&addr_, p->ai_addr, p->ai_addrlen); |
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addrlen_ = (socklen_t)p->ai_addrlen; |
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family_ = family; |
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found = true; |
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break; |
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} |
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} |
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freeaddrinfo(result); |
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if (found) return; |
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} |
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ERR_EXIT: |
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throw cybozu::Exception("SocketAddr:set") << address << port << cybozu::NetErrorNo(); |
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} |
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socklen_t getSize() const { return addrlen_; } |
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int getFamily() const { return family_; } |
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const struct sockaddr *get() const { return &addr_.sa; } |
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uint16_t getPort() const { |
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if (family_ == AF_INET) { |
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return ntohs(addr_.v4.sin_port); |
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} else if (family_ == AF_INET6) { |
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return ntohs(addr_.v6.sin6_port); |
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} |
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throw cybozu::Exception("SocketAddr:getPort:bad family") << family_; |
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} |
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// compare addr without port
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bool hasSameAddr(const SocketAddr& rhs) const |
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{ |
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const uint8_t *v4 = 0; |
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const uint8_t *v6 = 0; |
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if (family_ == AF_INET) { |
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if (rhs.family_ == AF_INET) return memcmp(&addr_.v4.sin_addr, &rhs.addr_.v4.sin_addr, sizeof(in_addr)) == 0; |
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if (rhs.family_ != AF_INET6) return false; |
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v4 = (const uint8_t*)&addr_.v4.sin_addr; |
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v6 = (const uint8_t*)&rhs.addr_.v6.sin6_addr; |
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} else if (family_ != AF_INET6) { |
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return false; |
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} else { |
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if (rhs.family_ == AF_INET6) return memcmp(&addr_.v6.sin6_addr, &rhs.addr_.v6.sin6_addr, sizeof(in6_addr)) == 0; |
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if (rhs.family_ != AF_INET) return false; |
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v4 = (const uint8_t*)&rhs.addr_.v4.sin_addr; |
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v6 = (const uint8_t*)&addr_.v6.sin6_addr; |
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} |
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// Ipv6-mapped?
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const uint8_t header[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff }; |
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return memcmp(v6, header, 12) == 0 && memcmp(v6 + 12, v4, 4) == 0; |
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} |
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std::string toStr() const |
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{ |
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if (family_ == AF_INET || family_ == AF_INET6) { |
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char buf[INET6_ADDRSTRLEN]; |
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assert(INET_ADDRSTRLEN <= INET6_ADDRSTRLEN); |
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const bool isIPv4 = family_ == AF_INET; |
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const void *pa = isIPv4 ? (const void*)&addr_.v4.sin_addr : (const void*)&addr_.v6.sin6_addr; |
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// not "const void*" because of vc
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const char *p = inet_ntop(family_, const_cast<void*>(pa), buf, sizeof(buf)); |
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if (!p) throw cybozu::Exception("cybozu:SocketAddr:toStr") << cybozu::NetErrorNo(); |
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if (isIPv4) return std::string(p) + ':' + cybozu::itoa(getPort()); |
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return std::string("[") + p + "]:" + cybozu::itoa(getPort()); |
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} |
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throw cybozu::Exception("cybozu:SocketAddr:toStr:bad family_") << family_; |
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} |
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}; |
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/*
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socket class
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@note ower is moved if copied |
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*/ |
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class Socket { |
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friend class cybozu::ssl::ClientSocket; |
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private: |
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cybozu::socket_local::SocketHandle sd_; |
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Socket(const Socket&); |
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void operator=(const Socket&); |
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#ifdef WIN32 |
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void setTimeout(int type, int msec) |
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{ |
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setSocketOption(type, msec); |
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} |
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/* return msec */ |
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int getTimeout(int type) const |
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{ |
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return getSocketOption(type); |
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} |
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#else |
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void setTimeout(int type, int msec) |
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{ |
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struct timeval t; |
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t.tv_sec = msec / 1000; |
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t.tv_usec = (msec % 1000) * 1000; |
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setSocketOption(type, t); |
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} |
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/* return msec */ |
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int getTimeout(int type) const |
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{ |
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struct timeval t; |
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getSocketOption(type, &t); |
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return t.tv_sec * 1000 + t.tv_usec / 1000; /* msec */ |
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} |
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#endif |
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void setBlocking(bool isBlocking) |
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{ |
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#ifdef _WIN32 |
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u_long val = isBlocking ? 0 : 1; |
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int ret = ::ioctlsocket(sd_, FIONBIO, &val); |
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#else |
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int val = isBlocking ? 0 : 1; |
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int ret = ::ioctl(sd_, FIONBIO, &val); |
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#endif |
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if (ret < 0) throw cybozu::Exception("Socket:setBlocking") << cybozu::NetErrorNo() << isBlocking; |
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} |
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public: |
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#ifndef _WIN32 |
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static const int INVALID_SOCKET = -1; |
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#endif |
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Socket() |
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: sd_(INVALID_SOCKET) |
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{ |
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} |
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|
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bool isValid() const { return sd_ != INVALID_SOCKET; } |
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|
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// move
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#if CYBOZU_CPP_VERSION >= CYBOZU_CPP_VERSION_CPP11 |
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Socket(Socket&& rhs) |
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: sd_(INVALID_SOCKET) |
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{ |
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sd_ = cybozu::AtomicExchange(&rhs.sd_, sd_); |
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} |
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#endif |
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// close and move
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void moveFrom(Socket& rhs) |
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{ |
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close(); |
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sd_ = cybozu::AtomicExchange(&rhs.sd_, INVALID_SOCKET); |
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} |
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#if CYBOZU_CPP_VERSION >= CYBOZU_CPP_VERSION_CPP11 |
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void operator=(Socket&& rhs) |
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#else |
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void operator=(Socket& rhs) |
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#endif |
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{ |
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moveFrom(rhs); |
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} |
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|
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~Socket() |
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{ |
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close(cybozu::DontThrow); |
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} |
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|
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bool close(bool dontThrow = false) |
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{ |
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cybozu::socket_local::SocketHandle sd = cybozu::AtomicExchange(&sd_, INVALID_SOCKET); |
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if (sd == INVALID_SOCKET) return true; |
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#ifdef _WIN32 |
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// ::shutdown(sd, SD_SEND);
|
||||
// shutdown is called in closesocket
|
||||
bool isOK = ::closesocket(sd) == 0; |
||||
#else |
||||
bool isOK = ::close(sd) == 0; |
||||
#endif |
||||
if (!dontThrow && !isOK) throw cybozu::Exception("Socket:close") << cybozu::NetErrorNo(); |
||||
return isOK; |
||||
} |
||||
/*
|
||||
how 0 : SHUTRD ; disallow read |
||||
1 : SHUT_WR ; disallow write |
||||
2 : SHUT_RDWR ; disallow read/write |
||||
*/ |
||||
bool shutdown(int how, bool dontThrow = false) |
||||
{ |
||||
bool isOK = ::shutdown(sd_, how) == 0; |
||||
if (!dontThrow && !isOK) throw cybozu::Exception("Socket:waitForClose:shutdown") << cybozu::NetErrorNo(); |
||||
return isOK; |
||||
} |
||||
/*
|
||||
send FIN and wait for remote's close(). |
||||
this function is used for the following situation. |
||||
sock.write() |
||||
sock.waitForClose() |
||||
sock.close() |
||||
*/ |
||||
void waitForClose() |
||||
{ |
||||
if (sd_ == INVALID_SOCKET) return; |
||||
// send FIN and this socket can't write any data.
|
||||
shutdown(1); |
||||
// wait for FIN from the peer.
|
||||
char buf[1]; |
||||
ssize_t readSize = readSome(buf, sizeof(buf)); |
||||
if (readSize != 0) { |
||||
throw cybozu::Exception("Socket:waitForClose:readSome:bad size") << readSize; |
||||
} |
||||
} |
||||
|
||||
/*!
|
||||
receive data |
||||
@param buf [out] receive buffer |
||||
@param bufSize [in] receive buffer size(byte) |
||||
@note return read size |
||||
*/ |
||||
size_t readSome(void *buf, size_t bufSize) |
||||
{ |
||||
int size = (int)(std::min)((size_t)0x7fffffff, bufSize); |
||||
#ifdef _WIN32 |
||||
int readSize = ::recv(sd_, (char *)buf, size, 0); |
||||
#else |
||||
RETRY: |
||||
ssize_t readSize = ::read(sd_, buf, size); |
||||
if (readSize < 0 && errno == EINTR) goto RETRY; |
||||
#endif |
||||
if (readSize < 0) throw cybozu::Exception("Socket:readSome") << cybozu::NetErrorNo() << bufSize; |
||||
return readSize; |
||||
} |
||||
|
||||
/*!
|
||||
receive all data unless timeout |
||||
@param buf [out] receive buffer |
||||
@param bufSize [in] receive buffer size(byte) |
||||
*/ |
||||
void read(void *buf, size_t bufSize) |
||||
{ |
||||
char *p = (char *)buf; |
||||
while (bufSize > 0) { |
||||
size_t readSize = readSome(p, bufSize); |
||||
if (readSize == 0) throw cybozu::Exception("Socket:read:readSize is zero"); |
||||
p += readSize; |
||||
bufSize -= readSize; |
||||
} |
||||
} |
||||
/*!
|
||||
write all data |
||||
@param buf [out] send buffer |
||||
@param bufSize [in] send buffer size(byte) |
||||
*/ |
||||
void write(bool *pb, const void *buf, size_t bufSize) |
||||
{ |
||||
const char *p = (const char *)buf; |
||||
while (bufSize > 0) { |
||||
int size = (int)(std::min)(size_t(0x7fffffff), bufSize); |
||||
#ifdef _WIN32 |
||||
int writeSize = ::send(sd_, p, size, 0); |
||||
#else |
||||
int writeSize = ::write(sd_, p, size); |
||||
if (writeSize < 0 && errno == EINTR) continue; |
||||
#endif |
||||
if (writeSize < 0) { |
||||
*pb = false; |
||||
return; |
||||
} |
||||
p += writeSize; |
||||
bufSize -= writeSize; |
||||
} |
||||
*pb = true; |
||||
} |
||||
void write(const void *buf, size_t bufSize) |
||||
{ |
||||
bool b; |
||||
write(&b, buf, bufSize); |
||||
if (!b) throw cybozu::Exception("Socket:write") << cybozu::NetErrorNo() << bufSize; |
||||
} |
||||
/**
|
||||
connect to address:port |
||||
@param address [in] address |
||||
@param port [in] port |
||||
@param msec: 0 : block |
||||
*/ |
||||
void connect(const std::string& address, uint16_t port, int msec = 0) |
||||
{ |
||||
SocketAddr addr; |
||||
addr.set(address, port); |
||||
connect(addr, msec); |
||||
} |
||||
/**
|
||||
connect to resolved socket addr |
||||
*/ |
||||
void connect(const cybozu::SocketAddr& addr, int msec = 0) |
||||
{ |
||||
if (isValid()) throw cybozu::Exception("Socket:connect:already connect"); |
||||
sd_ = ::socket(addr.getFamily(), SOCK_STREAM, IPPROTO_TCP); |
||||
if (!isValid()) { |
||||
throw cybozu::Exception("Socket:connect:socket") << cybozu::NetErrorNo(); |
||||
} |
||||
if (msec == 0) { |
||||
if (::connect(sd_, addr.get(), addr.getSize()) < 0) { |
||||
throw cybozu::Exception("Socket:connect") << cybozu::NetErrorNo() << addr.toStr(); |
||||
} |
||||
} else { |
||||
setBlocking(false); |
||||
if (::connect(sd_, addr.get(), addr.getSize()) < 0) { |
||||
#ifdef _WIN32 |
||||
bool inProgress = WSAGetLastError() == WSAEWOULDBLOCK; |
||||
#else |
||||
bool inProgress = errno == EINPROGRESS; |
||||
#endif |
||||
if (!inProgress) throw cybozu::Exception("Socket:connect:not in progress") << cybozu::NetErrorNo() << addr.toStr(); |
||||
if (!queryAccept(msec, false)) throw cybozu::Exception("Socket:connect:timeout") << addr.toStr(); |
||||
int err = getSocketOption(SO_ERROR); |
||||
if (err != 0) throw cybozu::Exception("Socket::connect:bad socket") << cybozu::NetErrorNo(err); |
||||
} |
||||
setBlocking(true); |
||||
} |
||||
} |
||||
|
||||
static const int allowIPv4 = 1; |
||||
static const int allowIPv6 = 2; |
||||
/**
|
||||
init for server |
||||
@param port [in] port number |
||||
*/ |
||||
void bind(uint16_t port, int mode = allowIPv4 | allowIPv6) |
||||
{ |
||||
const int family = (mode & allowIPv6) ? AF_INET6 : AF_INET; |
||||
sd_ = ::socket(family, SOCK_STREAM, IPPROTO_TCP); |
||||
if (!isValid()) { |
||||
throw cybozu::Exception("Socket:bind:socket") << cybozu::NetErrorNo(); |
||||
} |
||||
setSocketOption(SO_REUSEADDR, 1); |
||||
struct sockaddr_in6 addr6; |
||||
struct sockaddr_in addr4; |
||||
struct sockaddr *addr; |
||||
socklen_t addrLen; |
||||
if (mode & allowIPv6) { |
||||
setSocketOption(IPV6_V6ONLY, (mode & allowIPv4) ? 0 : 1, IPPROTO_IPV6); |
||||
memset(&addr6, 0, sizeof(addr6)); |
||||
addr6.sin6_family = AF_INET6; |
||||
addr6.sin6_port = htons(port); |
||||
addr = (struct sockaddr*)&addr6; |
||||
addrLen = sizeof(addr6); |
||||
} else { |
||||
memset(&addr4, 0, sizeof(addr4)); |
||||
addr4.sin_family = AF_INET; |
||||
addr4.sin_port = htons(port); |
||||
addr = (struct sockaddr*)&addr4; |
||||
addrLen = sizeof(addr4); |
||||
} |
||||
if (::bind(sd_, addr, addrLen) == 0) { |
||||
if (::listen(sd_, SOMAXCONN) == 0) { |
||||
return; |
||||
} |
||||
} |
||||
cybozu::NetErrorNo keep; |
||||
close(cybozu::DontThrow); |
||||
throw cybozu::Exception("Socket:bind") << keep; |
||||
} |
||||
|
||||
/**
|
||||
return positive if accepted |
||||
return zero if timeout |
||||
return negative(-errno) if error |
||||
*/ |
||||
int queryAcceptNoThrow(int msec = 1000, bool checkWrite = true) |
||||
{ |
||||
if (sd_ < 0) return -EBADF; |
||||
#ifdef CYBOZU_SOCKET_USE_EPOLL |
||||
int err; |
||||
experimental::Epoll ep; |
||||
if (!ep.init(&err)) return -err; |
||||
uint32_t events = checkWrite ? EPOLLIN : EPOLLOUT; |
||||
experimental::AutoLock al(ep, sd_, events); |
||||
experimental::EpollEvent ev; |
||||
int ret = ep.wait(&ev, 1, msec); |
||||
if (ret != 1) return ret; |
||||
assert(ev.getFd() == sd_); |
||||
return ret; |
||||
#else |
||||
#ifndef _WIN32 |
||||
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms739169.aspx
|
||||
if (sd_ >= FD_SETSIZE) return -EMFILE; |
||||
#endif |
||||
struct timeval timeout; |
||||
timeout.tv_sec = msec / 1000; |
||||
timeout.tv_usec = (msec % 1000) * 1000; |
||||
fd_set fds; |
||||
FD_ZERO(&fds); |
||||
FD_SET((unsigned)sd_, &fds); |
||||
int fdNum; |
||||
if (checkWrite) { |
||||
fdNum = ::select((int)sd_ + 1, &fds, 0, 0, &timeout); |
||||
} else { |
||||
fdNum = ::select((int)sd_ + 1, 0, &fds, 0, &timeout); |
||||
} |
||||
if (fdNum < 0) return -errno; |
||||
return fdNum; |
||||
#endif |
||||
} |
||||
/**
|
||||
return true if acceptable, otherwise false |
||||
return false if one second passed |
||||
while (!server.queryAccept()) { |
||||
} |
||||
client.accept(server); |
||||
*/ |
||||
bool queryAccept(int msec = 1000, bool checkWrite = true) |
||||
{ |
||||
int ret = queryAcceptNoThrow(msec, checkWrite); |
||||
if (ret < 0) throw cybozu::Exception("Socket:queryAccept") << cybozu::NetErrorNo(-ret); |
||||
return ret > 0; |
||||
} |
||||
|
||||
/**
|
||||
accept for server |
||||
*/ |
||||
void accept(Socket& client, SocketAddr *paddr = 0) const |
||||
{ |
||||
if (paddr) { |
||||
struct sockaddr *psa = &paddr->addr_.sa; |
||||
paddr->addrlen_ = sizeof(paddr->addr_); |
||||
client.sd_ = ::accept(sd_, psa, &paddr->addrlen_); |
||||
paddr->verify(); |
||||
} else { |
||||
client.sd_ = ::accept(sd_, 0, 0); |
||||
} |
||||
if (!client.isValid()) throw cybozu::Exception("Socket:accept") << cybozu::NetErrorNo(); |
||||
} |
||||
|
||||
template<typename T> |
||||
void setSocketOption(int optname, const T& value, int level = SOL_SOCKET) |
||||
{ |
||||
bool isOK = setsockopt(sd_, level, optname, cybozu::cast<const char*>(&value), sizeof(T)) == 0; |
||||
if (!isOK) throw cybozu::Exception("Socket:setSocketOption") << cybozu::NetErrorNo(); |
||||
} |
||||
template<typename T> |
||||
void getSocketOption(int optname, T* value, int level = SOL_SOCKET) const |
||||
{ |
||||
socklen_t len = (socklen_t)sizeof(T); |
||||
bool isOK = getsockopt(sd_, level, optname, cybozu::cast<char*>(value), &len) == 0; |
||||
if (!isOK) throw cybozu::Exception("Socket:getSocketOption") << cybozu::NetErrorNo(); |
||||
} |
||||
int getSocketOption(int optname) const |
||||
{ |
||||
int ret; |
||||
getSocketOption(optname, &ret); |
||||
return ret; |
||||
} |
||||
/**
|
||||
setup linger |
||||
*/ |
||||
void setLinger(uint16_t l_onoff, uint16_t l_linger) |
||||
{ |
||||
struct linger linger; |
||||
linger.l_onoff = l_onoff; |
||||
linger.l_linger = l_linger; |
||||
setSocketOption(SO_LINGER, &linger); |
||||
} |
||||
/**
|
||||
get receive buffer size |
||||
@retval positive buffer size(byte) |
||||
@retval -1 error |
||||
*/ |
||||
int getReceiveBufferSize() const |
||||
{ |
||||
return getSocketOption(SO_RCVBUF); |
||||
} |
||||
/**
|
||||
set receive buffer size |
||||
@param size [in] buffer size(byte) |
||||
*/ |
||||
void setReceiveBufferSize(int size) |
||||
{ |
||||
setSocketOption(SO_RCVBUF, size); |
||||
} |
||||
/**
|
||||
get send buffer size |
||||
@retval positive buffer size(byte) |
||||
@retval -1 error |
||||
*/ |
||||
int getSendBufferSize() const |
||||
{ |
||||
return getSocketOption(SO_SNDBUF); |
||||
} |
||||
/**
|
||||
sed send buffer size |
||||
@param size [in] buffer size(byte) |
||||
*/ |
||||
void setSendBufferSize(int size) |
||||
{ |
||||
setSocketOption(SO_SNDBUF, size); |
||||
} |
||||
/**
|
||||
set send timeout |
||||
@param msec [in] msec |
||||
*/ |
||||
void setSendTimeout(int msec) |
||||
{ |
||||
setTimeout(SO_SNDTIMEO, msec); |
||||
} |
||||
/**
|
||||
set receive timeout |
||||
@param msec [in] msec |
||||
*/ |
||||
void setReceiveTimeout(int msec) |
||||
{ |
||||
setTimeout(SO_RCVTIMEO, msec); |
||||
} |
||||
/**
|
||||
get send timeout(msec) |
||||
*/ |
||||
int getSendTimeout() const |
||||
{ |
||||
return getTimeout(SO_SNDTIMEO); |
||||
} |
||||
/**
|
||||
get receive timeout(msec) |
||||
*/ |
||||
int getReceiveTimeout() const |
||||
{ |
||||
return getTimeout(SO_RCVTIMEO); |
||||
} |
||||
}; |
||||
|
||||
} // cybozu
|
||||
|
||||
#ifdef _WIN32 |
||||
#pragma warning(pop) |
||||
#endif |
||||
Loading…
Reference in new issue