关于返回数据包的检测问题

关于返回数据包的检测问题

在对接口进行压力测试时,
为了检测返回包buff1中从第6个字节开始的11位数据是否与param2相等，
编写如下脚本
但发现lrs_save_param("socket0", "buf1", "param1", 6, 11);
返回的值是固定第一次 lrs_receive("socket0", "buf1", LrsLastArg);返回的值，
不知各位有什么好方法能动态返回每次包中该位置的值？
#include "lrs.h"
int rc;
Action()
{

    lr_think_time(8);

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

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

        lrs_save_param("socket0", "buf1", "param1", 6, 11);

        rc = strcmp("<param1>","<param2>");

        if(rc != 0)
        {
        lr_error_message ("error:data != %s", lr_eval_string("<param1>"));       

        //return -1;
        }
        else return 0;
}

请教如何在socket协议中对接收到的报进行检测

在录制socket接口的vu脚本时，
需要对返回包进行检测，
判断是否符合某一标准结构，
请各位大虾赐教 

#include "lrs.h"

Action()
{
        lr_start_transaction("连接");

        lrs_startup(257);

    lrs_create_socket("socket0", "TCP", "RemoteHost=10.224.18.163:11110",  LrsLastArg);

        lr_end_transaction("连接", LR_AUTO);

        lr_start_transaction("缴费");

//    lr_think_time(22);

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

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

        lr_end_transaction("缴费",LR_AUTO);

//    lr_think_time(37);

        lr_start_transaction("回退");

    lrs_send("socket0", "buf2", LrsLastArg);

    lrs_receive("socket0", "buf3", LrsLastArg);

        lr_end_transaction("回退", LR_AUTO);

//    lr_think_time(12);

        lr_start_transaction("断开连接");

    lrs_close_socket("socket0");

    lrs_cleanup();

        lr_end_transaction("断开连接", LR_AUTO);

    return 0;
} 

lrs_receive("socket0", "buf3", LrsLastArg);
的值是否和
recv  buf3 750
        "750 0013519511500         李佳                                            "
        "            bank211665030746    1                        100.00      本次交"
        "款   100.00                                                               "
        "                    \n"
        "                                                                          "
        "                          \n"
        ".................费用明细......................                           "
        "                          \n"
        "最新余额  1050.31                                                         "
        "                          \n"
        "                                                                          "
        "                          \n"
        "                                                                          "
        "                          \n"
        "^"

这个包一样（加一个检查点），不知能否提供一个解决方法

用lrs_save_param函数可以把收到的包中数据取出来，具体用法看帮助吧