socket协议分为TCP、UDP两种(区别与联系在此不做赘述),一种为长连接、一种为短连接。如果创建连接时在init中对应关闭连接在end中,则为长连接;如果创建关闭连接都是在action则为短连接。
在这里主要是对socket脚本调试过程中遇到的问题做一下简单记录。
Q1:发送请求内容的组装方式?
常用的有两种,数据一种是data.ws文件中存放的,一种是直接通过函数存在参数中。
第一种,data.ws中直接把请求放进去就可以了,请求内容的具体形式如(二进制、加密数据)等根据实际编写就可以。
Action() { int intConn; //连接成功标志 int Count_ConnFail=0; //连接失败统计 int Count_NoRecv=0; //返回报文为空统计 int Count_Error=0; //交易失败统计 //创建连接 intConn=lrs_create_socket("socket1", "TCP", "LocalHost=0", "RemoteHost=10.10.49.1:1000", LrsLastArg); lr_start_transaction ("汇总查询"); if(intConn==0) // Socket连接创建成功 { lrs_set_send_timeout (120,0); // 设置发送报文的超时时间 lrs_send("socket1", "buf1", LrsLastArg); lrs_set_recv_timeout (120,0); // 设置返回报文的超时时间 lrs_receive("socket1", "buf2", LrsLastArg); //lrs_get_last_received_buffer ("socket1",&ActualBuffer,&NumofBytes); if(lrs_get_last_received_buffer_size ("socket1")<1) // 如果系统返回报文为空 { Count_NoRecv++; lr_end_transaction("汇总查询",LR_FAIL); lr_output_message ("返回报文为空。为空次数:%d",Count_NoRecv); } else { // 系统返回报文不为空 //取ansCode:0为成功 非0为失败 lrs_save_searched_string ("socket1",LRS_LAST_RECEIVED,"ansCode","LB=<ans_code>","RB=</ans_code>",1,0,-1); lr_output_message ("ansCode:%s",lr_eval_string ("<ansCode>")); //取ansInfo信息:“交易成功”即成功,其他返回值均为失败 lrs_save_searched_string ("socket1",LRS_LAST_RECEIVED,"ansInfo","LB=<ans_info>","RB=</ans_info>",1,0,-1); //lr_output_message ("AnsInfo: %s",lr_eval_string("<ansInfo>")); if(strcmp(lr_eval_string("<ansCode>"),"0")==0) { lr_end_transaction ("汇总查询",LR_PASS); lr_output_message ("交易结果:%s",lr_eval_string ("<ansInfo>")); } else { //交易失败 Count_Error++; lr_end_transaction ("汇总查询",LR_FAIL); //交易失败 lr_output_message("交易结果:%s",lr_eval_string ("<ansInfo>")); lr_output_message ("交易失败次数统计:%d",Count_Error); } } } else // Socket连接创建不成功 { Count_ConnFail++; lr_end_transaction ("汇总查询",LR_FAIL); lr_output_message ("Socket 连接失败! Error code=%d。连接失败次数:%d",intConn,Count_ConnFail); } lrs_close_socket("socket1"); return 0; }
对应的data.ws中(buf1在这里是必须的,这里只截取实际报文的一部分,buf2可只指定长度)
;WSRData 2 1 send buf1 308 "0 601<ap><head><tr_code>900001</tr_code><corp_no><CorpNo><tr_acdt>2012" "1127</tr_acdt><tr_time>084724</tr_time><atom_tr_count>1</atom_tr_count><ch" "annel>1</channel><sign>11111111</sign><filename>No File</filename><ogl_ser" "ial_no> </ogl_serial_no><reserved> </reserved></head><body><start_date>201609<EndDay></start_date><start_time>090000</start_time><end_date></body></ap>" recv buf2 500 * //517 //"0510 <ap><head><tr_code>920201</tr_code><corp_no> </corp_no><req_no>600<" //"/req_no><ans_no>5230</ans_no><tr_acdt>20121112</tr_acdt><tr_time>085032</t" //"r_time><ans_code>0</ans_code><ans_info>交易成功</ans_info><particular_code" //">0000</particular_code><particular_code>0000</particular_code><particular_" //"info>交易成功</particular_info></head><body><field_num>7</field_num><record_num>1</record_num></body></ap>" -1
这种形式的发送数据就在data.ws中,后续对其参数化与普通的脚本没有区别。
第二种,通过sprintf函数保存内容在参数中,见下例。
Action() { lr_start_transaction("Action_1000"); Action_1000(); lr_end_transaction("Action_1000",LR_AUTO); } Action_1000() { char szPacketContent[256]; //发送包的内容 char szRecvContent[256];//接收包的内容 int iSndPacketLen = 0; char szNumberOfBytesToRecv[256+1]; int iReceiveLen=0; int iRtn = 0; char* pReceiveBuf=NULL; char *p1=NULL; char *p2=NULL; char ResposeCode[256]; char ErrorMessage[1024]; //缓冲区清零 memset(szPacketContent,0,sizeof(szPacketContent)); memset(szRecvContent,0,sizeof(szRecvContent)); memset(szNumberOfBytesToRecv,0,sizeof(szNumberOfBytesToRecv) ); memset(ResposeCode,0,sizeof(ResposeCode)); memset(ErrorMessage,0,sizeof(ErrorMessage)); lr_think_time(1.2); //创建服务器连接 //****************************************** iRtn = lrs_create_socket("socket0", "TCP", "LocalHost=0","RemoteHost={IP}", LrsLastArg); //****************************************** if( 0 != iRtn ) { lr_error_message("Create TCP socket failed,code:%d",iRtn); return 0; } sprintf(szPacketContent,"%s",lr_eval_string("<TransactionCode>1000</TransactionCode>" "<IDCard>{IDCard}</IDCard>" "<Password>111111</Password>" "<Balance>10000000.00</Balance>" ) ); lr_start_transaction("1000_K"); //设置发送缓冲区 lrs_set_send_buffer("socket0", szPacketContent, 256); iRtn = lrs_send("socket0", "buf0", LrsLastArg); //将报文发送到服务器 if( 0 != iRtn ) { lr_end_transaction("1000_K",LR_FAIL); lr_error_message("Send packet failed,code:%d",iRtn); lrs_close_socket("socket0"); return 0; } #ifdef DEBUG lr_output_message("Send Bufffer is:%s",szPacketContent); lr_output_message("Send Buffer Lenght is:%d",iSndPacketLen); #endif //设置超时 lrs_set_recv_timeout(100, 0); sprintf(szNumberOfBytesToRecv,"NumberOfBytesToRecv=%d",256); //****************************************** //用lrs_receive_ex函数来收报文 iRtn=lrs_receive_ex("socket0","buf1",szNumberOfBytesToRecv,LrsLastArg); //****************************************** if( 0 != iRtn ) { lr_end_transaction("4700_KKH",LR_FAIL); lr_error_message("Receive packet failed,code:%d",iRtn); lrs_close_socket("socket0"); return 0; } //****************************************** //lrs_get_last_received_buffer函数获得收到报文的缓冲区 iRtn=lrs_get_last_received_buffer("socket0",&pReceiveBuf,&iReceiveLen); //****************************************** if( iRtn != 0 || NULL == pReceiveBuf ) { lrs_free_buffer(pReceiveBuf); lr_end_transaction("4700_KKH",LR_FAIL); lrs_close_socket("socket0"); lr_error_message("The Content of last receive buffer is NULL"); return 0; } #ifdef DEBUG // lr_output_message("The Content of last receive buffer is: %s",pReceiveBuf+sizeof(int)); #endif memcpy(szRecvContent,pReceiveBuf,iReceiveLen); p1=(char*)strstr(szRecvContent,"<ResponseCode>"); p2=(char*)strstr(szRecvContent,"</ResponseCode>"); if (p1==NULL ||p2==NULL) { lrs_free_buffer(pReceiveBuf); lr_end_transaction("1000_K",LR_FAIL); lrs_close_socket("socket0"); lr_error_message("can not find ResposeCode"); return 0; } memcpy(ResposeCode,p1+14,p2-p1-14); if( strcmp(ResposeCode,"000000") == 0 ) { lr_end_transaction("1000_K",LR_PASS); } else { lr_end_transaction("1000_K",LR_FAIL); p1=(char*)strstr(szRecvContent,"<ErrorMessage>"); p2=(char*)strstr(szRecvContent,"</ErrorMessage>"); memcpy(ErrorMessage,p1+14,p2-p1-14); lr_error_message("ResposeCode is : %s ErrorMessage is: %s",ResposeCode,ErrorMessage); } //释放pReceiveBuf缓冲区,因为pReceiveBuf缓冲区是Loadrunner分配的,必须显示的释放 lrs_free_buffer(pReceiveBuf); //关闭连接 lrs_close_socket("socket0"); return 0; }
对应的data.ws中(无实际的buf0内容,只有buf0、buf1的长度,buf0内容在action中生成)
;WSRData 2 1 send buf0 256 recv buf1 256 -1
注意:
1、请求报文的格式问题,根据实际请求来分析。报文可通过socketTool工具实际发送看看。比如请求报文每行要分行,在LR里就需要添加 。
2、如果请求报文在参数化时,无法保证所有报文的长度是固定的。这时采取哪种呢?第二种。比如取所有报文长度的最长值100,那直接参数定义为100,如果实际报文长度为80则该报文补0达到100。如果报文收发没有问题,就可以直接使用。
待补充。。。。。