334 lines
11 KiB
C
334 lines
11 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file otg_tx_socket.c
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* \brief function containing the OTG TX traffic generation functions with sockets
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* \author A. Hafsaoui
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* \date 2011
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* \version 0.1
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* \company Eurecom
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* \email: openair_tech@eurecom.fr
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* \note
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* \warning
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*/
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#include "otg_tx_socket.h"
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#include "otg_vars.h"
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#ifdef WIN32 /* si vous êtes sous Windows */
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#include <winsock2.h>
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#elif defined (linux) /* si vous êtes sous Linux */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <unistd.h> /* close */
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#include <netdb.h> /* gethostbyname */
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#include <errno.h>
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#define INVALID_SOCKET -1
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#define SOCKET_ERROR -1
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#define closesocket(s) close(s)
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typedef int SOCKET;
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typedef struct sockaddr_in SOCKADDR_IN;
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typedef struct sockaddr SOCKADDR;
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typedef struct in_addr IN_ADDR;
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#else /* sinon vous êtes sur une plateforme non supportée */
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#error not defined for this platform
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#endif
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control_hdr_t *control_hdr;
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void socket_packet_send(int src, int dst, int state,int ctime) {
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init_control_header();
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LOG_I(OTG,"SOCKET:: IP version %d, Transport Protocol %d \n", g_otg->ip_v[src], g_otg->trans_proto[src]);
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if ((g_otg->ip_v[src]==1) && (g_otg->trans_proto[src]==2))
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client_socket_tcp_ip4(src, dst, state, ctime);
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if ((g_otg->ip_v[src]==2) && (g_otg->trans_proto[src]==2))
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client_socket_tcp_ip6(src, dst, state, ctime);
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if ((g_otg->ip_v[src]==1) && (g_otg->trans_proto[src]==1))
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client_socket_udp_ip4(src, dst, state, ctime);
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if ((g_otg->ip_v[src]==2) && (g_otg->trans_proto[src]==1))
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client_socket_udp_ip6(src, dst, state, ctime);
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}
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void client_socket_tcp_ip4(int src, int dst, int state, int ctime) {
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#define PORT 7777
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: src= %d , dst= %d , state= %d \n", src, dst, state);
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#if defined (WIN32)
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WSADATA WSAData;
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int erreur = WSAStartup(MAKEWORD(2,2), &WSAData);
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#else
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int erreur = 0;
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#endif
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SOCKET sock;
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SOCKADDR_IN sin;
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int sock_err;
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double idt;
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int size;
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/* If we are in the case of Windows sockets*/
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if(!erreur) {
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/* Create socket */
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sock = socket(AF_INET, SOCK_STREAM, 0);
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/* Configure the connection */
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sin.sin_addr.s_addr = inet_addr(g_otg->dst_ip[src]);
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sin.sin_family = AF_INET;
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sin.sin_port = htons(PORT);
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/* connection is ok */
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printf("SOCKET:: TCP-IP4 :: \n");
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if(connect(sock, (SOCKADDR *)&sin, sizeof(sin)) != SOCKET_ERROR) {
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: Create socket %s with dst port %d\n", inet_ntoa(sin.sin_addr), htons(sin.sin_port));
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ctime=0;
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: ctime=%d, duration=%d \n", ctime, g_otg->duration[src]);
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init_control_header();
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do {
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//payload=NULL;
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//payload=packet_gen_socket(src, dst, state, ctime);
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//payload="CCCCC";
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char *payload_rest;
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payload_rest=packet_gen_socket(src, dst, state, ctime);
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if (payload_rest!=NULL) {
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payload_t *payload;
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payload= malloc(sizeof(payload_t));
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// Data serialization
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char *tx_buffer;
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tx_buffer= (char *)malloc(PAYLOAD_MAX);
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payload->control_hdr=otg_info_hdr_gen(src, dst, TCP, IPV4);
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payload->payload_rest=payload_rest;
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memcpy(tx_buffer, payload->control_hdr, sizeof (control_hdr_t));
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memcpy(tx_buffer+ sizeof (control_hdr_t), payload->payload_rest, strlen(payload_rest));
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int total_size=sizeof(control_hdr_t) + strlen(payload_rest);
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if((sock_err = send(sock, tx_buffer, total_size, 0)) != SOCKET_ERROR)
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: Payload to send size :: %d \n",sock_err);
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else
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: Transmission Error\n");
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free(payload);
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free(tx_buffer);
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}
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ctime+=1;
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} while (ctime<=g_otg->duration[src]) ;
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}
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/* connection is not possible..." */
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else
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LOG_I(OTG,"SOCKET:: TCP-IP4 :: connection is not possible to connect \n");
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/* close the socket */
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closesocket(sock);
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}
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}
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void client_socket_udp_ip4(int src, int dst, int state,int ctime) {
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char *payload_rest;
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signed int udp_send;
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int sockfd, ok, addr_in_size;
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u_short portnum = 12345;
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struct sockaddr_in *to;
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struct hostent *toinfo;
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char *htoname = "127.0.0.1";
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u_long toaddr;
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LOG_I(OTG,"SOCKET:: UDP-IP4 :: src= %d , dst= %d , state= %d \n", src, dst, state);
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to = (struct sockaddr_in *)malloc(sizeof(struct sockaddr_in));
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if((toinfo = gethostbyname(htoname)) == NULL) {
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LOG_W(OTG,"SOCKET:: UDP-IP4 :: Error %d in gethostbyname: %s\n", errno,sys_errlist[errno]);
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exit(errno);
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};
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toaddr = *(u_long *)toinfo->h_addr_list[0];
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addr_in_size = sizeof(struct sockaddr_in);
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memset((char *)to,(char)0,addr_in_size);
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to->sin_family = AF_INET;
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to->sin_addr.s_addr = toaddr;
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to->sin_port = portnum;
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//
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/*
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//set otg header to 0
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control_hdr = calloc(1, sizeof(control_hdr_t));
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if (control_hdr == NULL)
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// Memory could not be allocated
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printf("Couldn't allocate memory\n");
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memset(control_hdr, 0, sizeof(control_hdr_t));
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*/
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//
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if((sockfd = socket (PF_INET, SOCK_DGRAM, 0)) == -1) {
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LOG_W(OTG,"SOCKET:: UDP-IP4 :: Error %d in socket: %s\n",errno,sys_errlist[errno]);
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exit(errno);
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};
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do {
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payload_rest=packet_gen_socket(src, dst, state, ctime);
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if (payload_rest!=NULL) {
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payload_t *payload;
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payload= malloc(sizeof(payload_t));
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// Data serialization
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char *tx_buffer;
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tx_buffer= (char *)malloc(PAYLOAD_MAX);
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if (tx_buffer == NULL || payload == NULL) {
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LOG_E(OTG,"Memory allocation failed\n");
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return;
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}
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payload->control_hdr=otg_info_hdr_gen(src, dst, UDP, IPV4);
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payload->payload_rest=payload_rest;
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memcpy(tx_buffer, payload->control_hdr, sizeof (control_hdr_t));
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memcpy(tx_buffer+ sizeof (control_hdr_t), payload->payload_rest, strlen(payload_rest));
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int total_size=sizeof(control_hdr_t) + strlen(payload_rest);
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udp_send=sendto(sockfd, tx_buffer,total_size ,0,(struct sockaddr *)to,addr_in_size);
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LOG_I(OTG,"SOCKET:: UDP-IP4 :: Payload to send :: data sent:%d \n", udp_send);
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// Update TX OTG info
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//otg_info->rx_num_pkt[src][dst]+=1;
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//otg_info->rx_num_bytes[src][dst]+= udp_send + (HDR_IP_v4 + HDR_UDP);
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//
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free(payload);
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free(tx_buffer);
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}
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if(udp_send == -1) {
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LOG_I(OTG,"SOCKET:: UDP-IP4 :: Transmission Error\n");
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exit(errno);
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} else
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LOG_I(OTG,"SOCKET:: UDP-IP4 :: No data to transmit\n");
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ctime+=1;
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} while (ctime<=g_otg->duration[src]) ;
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closesocket(sockfd);
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}
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void client_socket_tcp_ip6(int src, int dst, int state,int ctime) {
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printf("client TCP IPv6\n");
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}
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void client_socket_udp_ip6(int src, int dst, int state,int ctime) {
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printf("client UDP IPv6\n");
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}
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char *packet_gen_socket(int src, int dst, int state, int ctime) {
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int size;
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char *payload=NULL;
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set_ctime(ctime);
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LOG_I(OTG,"SOCKET :: num_nodes_tx:: %d , seed:: %d \n", g_otg->num_nodes, g_otg->seed);
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LOG_I(OTG,"SOCKET :: NODE_INFO (Source= %d, Destination= %d,State= %d) ctime %d \n", src, dst, state, otg_info->ctime);
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LOG_I(OTG,"SOCKET :: INFO_SIM (src=%d, dst=%d, state=%d) application=%d, idt dist =%d, pkts dist= %d\n", src, dst, state, g_otg->application_type[src][dst], g_otg->idt_dist[src][dst][state],
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g_otg->size_dist[src][dst][state]);
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LOG_I(OTG,"SOCKET :: Transmission info: idt=%d, simulation time=%d \n", otg_info->idt[src][dst], ctime);
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// do not generate packet for this pair of src, dst : no app type and/or idt are defined
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if ((g_otg->application_type[src][dst] == 0) && (g_otg->idt_dist[src][dst][0] == 0)) {
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LOG_I(OTG,"SOCKET :: Do not generate packet for this pair of src=%d, dst =%d: no app type and/or idt are defined\n", src, dst);
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return 0;
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}
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//pre-config for the standalone
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if (ctime<otg_info->ptime[src][dst][state]) //it happends when the emulation was finished
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otg_info->ptime[src][dst][state]=ctime;
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if (ctime==0)
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otg_info->idt[src][dst]=0; //for the standalone mode: the emulation is run several times, we need to initialise the idt to 0 when ctime=0
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//end pre-config
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if ((otg_info->idt[src][dst]==(ctime-otg_info->ptime[src][dst][state])) || (otg_info->idt[src][dst]==0)) {
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LOG_I(OTG,"SOCKET :: Time To Transmit (Source= %d, Destination= %d,State= %d) , (IDT= %d ,simu time= %d, previous packet time= %d) \n", src, dst, state ,otg_info->idt[src][dst], ctime,
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otg_info->ptime[src][dst][state]);
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otg_info->ptime[src][dst][state]=ctime;
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otg_info->idt[src][dst]=time_dist(src, dst, state); // update the idt for the next otg_tx
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} else {
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LOG_I(OTG,"SOCKET :: It is not the time to transmit (ctime= %d, previous time=%d, packet idt=%d), node( %d,%d) \n", ctime,otg_info->ptime[src][dst][state], otg_info->idt[src][dst], src, dst);
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return 0; // do not generate the packet, and keep the idt
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}
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size=size_dist(src, dst, state);
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LOG_I(OTG,"SOCKET :: Generate Packet for (Source= %d, Destination= %d,State= %d) , pkt size dist= %d, simu time= %d ,packet size=%d \n",
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src, dst, state, g_otg->size_dist[src][dst][state], otg_info->ctime, size);
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if (size>(5* sizeof(int)))
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size=size-(5* sizeof(int));
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else
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size=(5* sizeof(int))+10;
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payload=payload_pkts(size);
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return(payload);
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}
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control_hdr_t *otg_info_hdr_gen(int src, int dst, int trans_proto, int ip_v) {
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control_hdr->src=src;
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control_hdr->dst=dst;
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control_hdr->trans_proto=trans_proto;
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control_hdr->ip_v=ip_v;
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LOG_I(OTG,"SOCKET :: control header src %d\n",control_hdr->src);
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LOG_I(OTG,"SOCKET :: control header src %d\n",control_hdr->dst);
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LOG_I(OTG,"SOCKET :: control header src %d\n",control_hdr->trans_proto);
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LOG_I(OTG,"SOCKET :: control header src %d\n",control_hdr->ip_v);
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return control_hdr;
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}
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void init_control_header() {
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//set otg header to 0
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control_hdr = calloc(1, sizeof(control_hdr_t));
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if (control_hdr == NULL)
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/* Memory could not be allocated */
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printf("Couldn't allocate memory\n");
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memset(control_hdr, 0, sizeof(control_hdr_t));
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}
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