Loadrunner winsocket 接收数据失败，请大神帮忙啊？

yingzi8016

action.c的处理

char *actual_buffer;
int num_bytes;
...........


lrs_save_param_ex("socket0","user",(char *)&pack,0,pack.length,NULL,"sendData");

lrs_startup(257);

rc=lrs_create_socket("socket0","UDP","LocalHost=<ip>:4096","RemoteHost=192.168.16.210:8805", LrsLastArg);
if (rc == 0) {
        lr_output_message("socke 连接成功！");
}else{
        lr_output_message("socke 连接失败！");
}

rc = lrs_send ("socket0","buf0" ,LrsLastArg );
if (rc == 0) {
          lr_output_message("send buf success ！");
}else{
         lr_output_message("send buf failed ！");
}


rc = lrs_receive ("socket0","buf1" ,LrsLastArg );
if (rc == 0) {
          lr_output_message("recv buf success ！");
}else{
         lr_output_message("recv buf failed ！");
}


lrs_get_last_received_buffer("socket0",&actual_buffer,&num_bytes);
lrs_save_param_ex("socket0", "user", actual_buffer, 0, num_bytes, NULL, "recv_data");
lr_output_message("The new parameter = %s \n", lr_eval_string("<recv_data>"));

lrs_close_socket("socket0");




data.ws

;WSRData 2 1

   send buf0 *
   "<send_data>"

   recv buf1 *

          
-1

打印信息
Action.c(411): lrs_receive(socket0, buf1)        [MsgId: MMSG0]
Action.c(411): fiInitRecv: socket: socket0 (644), buffer: buf1, expected size: 0        [MsgId: MMSG0]
Action.c(411): callRecv: Sat Nov 23 16:27:56.625: About to read 0 bytes from socket0 (644)        [MsgId: MMSG0]
Action.c(411): getAsciiReceivedBuffer: Sat Nov 23 16:27:56.625: Translate data for printing        [MsgId: MMSG0]
Action.c(411): getAsciiReceivedBuffer: Sat Nov 23 16:27:56.625: Binary to ascii        [MsgId: MMSG0]
================================RECEIVED BUFFER================================        [MsgId: MMSG0]
        [MsgId: MMSG0]
===============================================================================        [MsgId: MMSG0]
Action.c(411): callRecv:data was received from tzh        [MsgId: MMSG0]
Action.c(411): callRecv:0 bytes were received        [MsgId: MMSG0]
Action.c(414): recv buf success ！        [MsgId: MMSG-17999]


不知道为何接收数据一直为0，数据是动态变化，长度不固定，不知道data.ws 里那样写是不是有问题？