mirror of
https://github.com/Kiritow/GSock.git
synced 2024-03-22 13:10:51 +08:00
400 lines
8.0 KiB
C++
400 lines
8.0 KiB
C++
/** General Socket Wrapper
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* Created By Kiritow. (https://github.com/kiritow)
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* Licensed under MIT
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*/
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/** Version: 2.2 Update: 20170815*/
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#include "gsock.h"
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#ifdef GSOCK_DEBUG
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#pragma message("GSock Debug mode compiled in")
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#include <cstdio>
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#define myliblog(fmt,args...) printf("GSock: " fmt,##args)
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#else
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#define myliblog(fmt,args...)
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#endif
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#ifdef __WIN32__
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/// Using Win8.1
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#define _WIN32_WINNT 0x0603
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#else
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <netdb.h>
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#include <errno.h>
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#include <sys/epoll.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define closesocket close
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using BYTE = unsigned char;
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#endif
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#include <cstring> /// memset
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#include <string>
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#include <stdexcept>
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class _init_winsock2_2_class
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{
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public:
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_init_winsock2_2_class()
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{
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/// Windows Platform need WinSock2.DLL initialization.
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#ifdef __WIN32__
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WORD wd;
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WSAData wdt;
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wd=MAKEWORD(2,2);
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int ret=WSAStartup(wd,&wdt);
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myliblog("WSAStartup() Returns: %d\n",ret);
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if(ret<0)
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{
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myliblog("WSAGetLastError: %d\n",WSAGetLastError());
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throw std::runtime_error("Unable to load winsock2.dll. ");
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}
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#endif
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}
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~_init_winsock2_2_class()
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{
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/// Windows Platform need WinSock2.DLL clean up.
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#ifdef __WIN32__
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WSACleanup();
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myliblog("WSACleanup() called.");
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#endif
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}
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} _init_winsock2_2_obj;
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struct sock::_impl
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{
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int sfd;
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sockaddr_in saddr;
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bool created;
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};
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sock::sock() : _pp(new _impl)
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{
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myliblog("sock::sock() %p\n",this);
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_pp->created=false;
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}
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//private
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sock::sock(int SocketValue) : _pp(new _impl)
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{
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myliblog("sock::sock(int) %p\n",this);
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_pp->created=true;
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_pp->sfd=SocketValue;
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}
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sock::sock(sock&& tmp)
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{
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myliblog("sock::sock(sock&&) %p <- %p \n",this,&tmp);
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_pp=tmp._pp;
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tmp._pp=nullptr;
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}
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sock& sock::operator = (sock&& tmp)
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{
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myliblog("sock::operator = (sock&&) %p <= %p\n",this,&tmp);
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if(_pp)
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{
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if(_pp->created)
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{
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myliblog("Socket closed: [%d] in %p\n",_pp->sfd,this);
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closesocket(_pp->sfd);
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}
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delete _pp;
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}
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_pp=tmp._pp;
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tmp._pp=nullptr;
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return *this;
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}
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sock::~sock()
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{
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myliblog("sock::~sock() %p\n",this);
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if(_pp)
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{
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if(_pp->created)
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{
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myliblog("Socket closed: [%d] in %p\n",_pp->sfd,this);
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closesocket(_pp->sfd);
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}
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delete _pp;
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}
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}
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int sock::connect(const std::string& IPStr,int Port)
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{
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myliblog("sock::connect() %p\n",this);
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if(_pp->created)
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{
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return -2;
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}
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_pp->sfd=socket(AF_INET,SOCK_STREAM,0);
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if(_pp->sfd<0)
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{
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myliblog("socket() returns %d. WSAGetLastError: %d\n",_pp->sfd,WSAGetLastError());
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return -3;
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}
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myliblog("Socket created: [%d] in %p\n",_pp->sfd,this);
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_pp->created=true;
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// refs
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int& sfd=_pp->sfd;
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sockaddr_in& saddr=_pp->saddr;
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memset(&saddr,0,sizeof(saddr));
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saddr.sin_addr.s_addr=inet_addr(IPStr.c_str());
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saddr.sin_port=htons(Port);
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saddr.sin_family=AF_INET;
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return ::connect(sfd,(sockaddr*)&saddr,sizeof(saddr));
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}
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int sock::send(const void* Buffer,int Length)
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{
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return ::send(_pp->sfd,(const char*)Buffer,Length,0);
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}
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int sock::recv(void* Buffer,int MaxToRecv)
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{
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return ::recv(_pp->sfd,(char*)Buffer,MaxToRecv,0);
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}
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int sock::getsendtime(int& _out_Second, int& _out_uSecond)
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{
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// refs
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int& sfd=_pp->sfd;
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struct timeval outtime;
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socklen_t _not_used_t;
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int ret=getsockopt(sfd,SOL_SOCKET,SO_SNDTIMEO,(char*)&outtime,&_not_used_t);
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if(ret<0) return ret;
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/// We don't know why, but on Windows, 1 Second means 1000.
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#ifdef __WIN32__
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_out_Second=outtime.tv_sec/1000;
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_out_uSecond=outtime.tv_usec;
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#else
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_out_Second=outtime.tv_sec;
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_out_uSecond=outtime.tv_usec;
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#endif
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return ret;
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}
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int sock::getrecvtime(int& _out_Second, int& _out_uSecond)
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{
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// refs
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int& sfd=_pp->sfd;
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struct timeval outtime;
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socklen_t _not_used_t;
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int ret=getsockopt(sfd,SOL_SOCKET,SO_RCVTIMEO,(char*)&outtime,&_not_used_t);
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if(ret<0) return ret;
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/// We don't know why, but on Windows, 1 Second means 1000.
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#ifdef __WIN32__
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_out_Second=outtime.tv_sec/1000;
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_out_uSecond=outtime.tv_usec;
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#else
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_out_Second=outtime.tv_sec;
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_out_uSecond=outtime.tv_usec;
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#endif
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return ret;
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}
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int sock::setsendtime(int Second)
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{
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// refs
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int& sfd=_pp->sfd;
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struct timeval outtime;
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/// We don't know why, but on Windows, 1 Second means 1000.
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#ifdef __WIN32__
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outtime.tv_sec=Second*1000;
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outtime.tv_usec=0;
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#else
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outtime.tv_sec=Second;
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outtime.tv_usec=0;
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#endif
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return setsockopt(sfd,SOL_SOCKET,SO_SNDTIMEO,(const char*)&outtime,sizeof(outtime));
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}
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int sock::setrecvtime(int Second)
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{
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// refs
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int& sfd=_pp->sfd;
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struct timeval outtime;
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/// We don't know why, but on Windows, 1 Second means 1000.
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#ifdef __WIN32__
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outtime.tv_sec=Second*1000;
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outtime.tv_usec=0;
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#else
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outtime.tv_sec=Second;
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outtime.tv_usec=0;
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#endif
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return setsockopt(sfd,SOL_SOCKET,SO_RCVTIMEO,(const char*)&outtime,sizeof(outtime));
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}
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struct serversock::_impl
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{
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int sfd;
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sockaddr_in saddr;
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bool created;
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};
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serversock::serversock() : _pp(new _impl)
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{
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myliblog("serversock::serversock() %p\n",this);
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_pp->created=false;
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}
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serversock::~serversock()
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{
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myliblog("serversock::~serversock() %p\n",this);
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if(_pp)
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{
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if(_pp->created)
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{
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myliblog("Server-Socket closed: [%d] in %p\n",_pp->sfd,this);
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closesocket(_pp->sfd);
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}
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delete _pp;
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}
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}
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int serversock::bind(int Port)
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{
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myliblog("serversock::bind() %p\n",this);
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if(_pp->created)
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{
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return -2;
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}
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_pp->sfd=socket(AF_INET,SOCK_STREAM,0);
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if(_pp->sfd<0)
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{
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myliblog("socket() returns %d. WSAGetLastError: %d\n",_pp->sfd,WSAGetLastError());
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return -3;
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}
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myliblog("Socket created: [%d] in %p\n",_pp->sfd,this);
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_pp->created=true;
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// refs
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int& sfd=_pp->sfd;
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sockaddr_in& saddr=_pp->saddr;
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memset(&saddr,0,sizeof(saddr));
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saddr.sin_addr.s_addr=INADDR_ANY;
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saddr.sin_port=htons(Port);
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saddr.sin_family=AF_INET;
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return ::bind(sfd,(sockaddr*)&saddr,sizeof(saddr));
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}
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int serversock::set_reuse()
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{
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// refs
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int& sfd=_pp->sfd;
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int opt=1;
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return setsockopt(sfd,SOL_SOCKET,SO_REUSEADDR,(const char*)&opt,sizeof(opt));
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}
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int serversock::listen(int MaxCount)
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{
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// refs
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int& sfd=_pp->sfd;
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return ::listen(sfd,MaxCount);
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}
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int serversock::accept(sock& _out_s)
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{
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if(_out_s._pp->created)
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{
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/// _out_s has been connected.
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return -2;
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}
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sock s;
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socklen_t tmp=sizeof(s._pp->saddr);
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int ret=::accept(_pp->sfd,(sockaddr*)&(s._pp->saddr),&tmp);
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if(ret<0)
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{
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/// accept() call failed.
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myliblog("accept() returns %d. WSAGetLastError: %d\n",ret,WSAGetLastError());
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return -1;
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}
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else
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{
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s._pp->sfd=ret;
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s._pp->created=true;
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myliblog("Socket opened: [%d] in %p by serversock %p\n",s._pp->sfd,&s,this);
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/// Move resource.
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_out_s=std::move(s);
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return 0;
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}
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}
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int DNSResolve(const std::string& HostName, std::string& _out_IPStr)
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{
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/// Use getaddrinfo instead
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struct addrinfo hints;
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memset(&hints,0,sizeof(hints));
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hints.ai_family=AF_UNSPEC;
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hints.ai_socktype=SOCK_STREAM;
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hints.ai_protocol=IPPROTO_TCP;
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struct addrinfo* result=nullptr;
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int ret=getaddrinfo(HostName.c_str(),NULL,&hints,&result);
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if(ret!=0)
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{
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return -1;/// API Call Failed.
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}
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for(struct addrinfo* ptr=result; ptr!=nullptr; ptr=ptr->ai_next)
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{
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switch(ptr->ai_family)
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{
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case AF_INET:
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sockaddr_in* addr=(struct sockaddr_in*) (ptr->ai_addr) ;
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_out_IPStr=inet_ntoa(addr->sin_addr);
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return 0;
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break;
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}
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}
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/// Unknown error.
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return -2;
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}
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/// Undefine marcos
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#undef myliblog
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