loadrunner使用socket协议来实现客户端对服务器产生压力实例。（通过发送心跳包，达到连接多个客户端的目的）

#include "lrs.h"

vuser_init()
{

char *ip;
int handler;

//编写获取LR分配的Vuser IP函数，将IP保存在ip变量中。
ip=lr_get_vuser_ip();

if(ip)

lr_vuser_status_message("the ip address is %s:",ip);
else

lr_vuser_status_message("IP spooler disabled");

//输出获取到lr分配的ip值。
lr_output_message("the current assign ip is :%s",ip);

//将ip变量保存到一个参数中,并输出该参数的值。
lr_save_string(ip,"VirtualIP");
lr_output_message( lr_eval_string("{VirtualIP}"));

//在lrs_create_socket函数中localhost使用<>:<>形式来参数化
lrs_create_socket("socket0","TCP","LocalHost=<VirtualIP>:<RandomPort>","RemoteHost=5.5.5.5:8888",LrsLastArg);

//输出socket句柄号

handler=lrs_get_socket_handler("socket0");
lr_message("The current handler of sokcet0 is: %d",handler);

lrs_startup(257);

return 0;
}

########################################################################

#include "lrs.h"

Action()
{

char *ReturnValue_Remote;
char *ReturnPort_Remote;
char *ReturnValue_Local;
char *ReturnPort_Local;
char *AcutalBuffer_Send;
int BufferSize_Send;
char *AcutalBuffer_Revc;
int BufferSize_Revc;

int flag_send;
int flag_revc;

//int match_length;

//###########获取远程主机及本地主机IP及端口号################

ReturnValue_Remote=lrs_get_socket_attrib("socket0",REMOTE_ADDRESS);
ReturnPort_Remote=lrs_get_socket_attrib("socket0",REMOTE_PORT);
ReturnValue_Local=lrs_get_socket_attrib("socket0", LOCAL_ADDRESS);
ReturnPort_Local=lrs_get_socket_attrib("socket0",LOCAL_PORT);

lr_start_transaction("获取远程主机地址及端口");

lr_output_message("this RemoteHost address is %s :", ReturnValue_Remote);

lr_output_message("this RemoteHost Port is %s : ",ReturnPort_Remote);

lr_end_transaction("获取远程主机地址及端口", LR_AUTO);

lr_start_transaction("获取本机地址及端口");

lr_output_message("this LocalHost address is %s :", ReturnValue_Local);

lr_output_message("this LocalHost Port is %s : ",ReturnPort_Local);

lr_end_transaction("获取本机地址及端口", LR_AUTO);

//##############发送心跳包##########################

lr_think_time(3);

lr_start_transaction("发送数据包");

lrs_set_send_timeout(3,0);

flag_send=lrs_send("socket0","buf0",LrsLastArg);

lr_end_transaction("发送数据包", LR_AUTO);

if (flag_send==0)
{
lr_output_message("buf0缓冲数据发送成功!");
}
else
lr_output_message("buf0缓冲数据发送超时!");

//##############获取发送BUFF数据及大小###################

lr_start_transaction("获取BUFF数据大小及内容");

lrs_get_buffer_by_name("buf0",&AcutalBuffer_Send,&BufferSize_Send);

lr_output_message("buf0 size is %d :",BufferSize_Send);

lrs_save_param_ex("socket0","user",AcutalBuffer_Send,0,BufferSize_Send,"ascii","param_send");

lr_output_message("the contect buf0 is %s :",lr_eval_string("<param_send>"));

lr_end_transaction("获取BUFF数据大小及内容", LR_AUTO);

lrs_free_buffer("AcutalBuffer_Send");

//#####################接收数据包###########################

// lrs_set_recv_timeout(15,0);

lr_start_transaction("接收数据包");

lrs_set_recv_timeout2(15,0);

flag_revc=lrs_receive("socket0","buf1",LrsLastArg);

lr_end_transaction("接收数据包", LR_AUTO);

if (flag_revc==0)
{

lr_output_message("接收数据成功!");
}
else
lr_output_message("接收数据失败!");

//#################获取接收BUFF大小及内容#######################

lr_start_transaction("获取接收数据大小及内容");

lrs_get_last_received_buffer("socket0",&AcutalBuffer_Revc,&BufferSize_Revc);

lr_output_message("the size of last buffer is %d :",BufferSize_Revc);

lrs_save_param_ex("socket0","user",AcutalBuffer_Revc,0,BufferSize_Revc,"ascii","param_revc");

lr_output_message("the contect of last received buffer is %s :",lr_eval_string("<param_revc>"));

lr_end_transaction("获取接收数据大小及内容", LR_AUTO);

if (BufferSize_Revc==11) {

lr_output_message("接收到的数据长度为心跳包长度11个字节!");

}

else
lr_output_message("心跳包长度不相等");

//lrs_free_buffer("AcutalBuffer_Revc");

if (BufferSize_Revc>1024) {

lr_message("接收过来数据过大，不为心跳包数据，故关闭SOCKET");

lrs_free_buffer("AcutalBuffer_Revc");

//lrs_close_socket("socket0");
}

lr_output_message("当前第%s次迭代已结束",lr_eval_string("<lteration>"));

lr_message("当前第%s迭代已结束，系统输出时间为：%s",lr_eval_string("<lteration>"),lr_eval_string("<localtime_now>"));

return 0;
}

##############################################

#include "lrs.h"

vuser_end()
{

lrs_disable_socket("socket0",DISABLE_SEND);

lrs_close_socket("socket0");

lrs_cleanup();

return 0;
}

##################################################

;WSRData 2 1

send buf0 11
"x41x45x48x50x0Bx00x00x00x01xFFxFF"
recv buf1 11
-1