Guy Resheff
92df7a383a
Unmodified upstream source from https://github.com/Raizo62/vwifi Commit: 4a9842e "CMakeLists.txt : VERSION = 7.0" Simulator of WiFi (802.11) interfaces to communicate between several Virtual Machines via mac80211_hwsim + TCP relay. License: Apache-2.0
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
#include <iostream> // cout
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#include <cstdio> //perror
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#include <cstring> // memset
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#include <assert.h> // assert
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#include <arpa/inet.h> // INADDR_ANY
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#include <sys/socket.h>
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#include <linux/vm_sockets.h> // struct sockaddr_vm
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#include "csocket.h" // SOCKET_ERROR
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#include "csocketserverfunctionvtcp.h"
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using namespace std;
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bool CSocketServerFunctionVTCP::Configure(TDescriptor& master)
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{
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//create a master socket
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master = socket(AF_VSOCK , SOCK_STREAM , 0);
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if( master == SOCKET_ERROR )
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{
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perror("CSocketServerFunctionVTCP::_Configure : socket");
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return false;
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}
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return true;
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}
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bool CSocketServerFunctionVTCP::_Listen(TDescriptor& master, TPort port)
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{
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if( ! Configure(master) )
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{
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cerr<<"Error : CSocketServerFunctionVTCP::_Listen : Configure"<<endl;
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return false;
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}
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//type of socket created
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struct sockaddr_vm address;
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memset(&address, 0, sizeof(address));
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address.svm_family = AF_VSOCK;
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address.svm_port = port;
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address.svm_cid = VMADDR_CID_ANY;
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//bind the socket
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if (bind(master, (struct sockaddr*)&address, sizeof(address)) != 0)
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{
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perror("CSocketServerFunctionVTCP::_Listen : bind");
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return false;
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}
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/* Seems useless with VSOCK : the server detects immediately that a client is disconnected
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struct timeval timeout;
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timeout.tv_sec = 3;
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timeout.tv_usec = 0;
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if (setsockopt (master, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
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perror("CSocketServerFunctionVTCP::_Listen : setsockopt : SO_RCVTIMEO\n");
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if (setsockopt (master, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
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perror("CSocketServerFunctionVTCP::_Listen : setsockopt : SO_SNDTIMEO\n");
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*/
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cout<<"Listener on port : "<<port<<endl;
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//try to specify maximum of 3 pending connections for the master socket
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if( listen(master, 3) < 0 )
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{
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perror("CSocketServerFunctionVTCP::_Listen : listen");
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return false;
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}
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return true;
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}
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TDescriptor CSocketServerFunctionVTCP::_Accept(TDescriptor master, TCID& cid)
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{
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TDescriptor new_socket;
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struct sockaddr_in address;
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int addrlen = sizeof(address);
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if( (new_socket = accept(master, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0 )
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{
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perror("CSocketServerFunctionVTCP::_Accept : accept");
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return SOCKET_ERROR;
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}
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cid=((struct sockaddr_vm*)&address)->svm_cid;
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return new_socket;
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}
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