2017-02问题记录总结：linux下网络收发包性能测试代码、.bin和.elf文件格式区别
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1..bin和.elf的区别
.bin文件是一个纯粹的二进制文件，内容就是机器码，把它下载到某个地址之后，可以直接运行，例如tftp 0x12345678 file.bin，直接go 0x12345678之后，PC跳转到这个地址就能够运行。
.elf文件的内容除了运行的机器码之外，还有一个头，头部的内容为加载地址，重定位地址，符号表等等。当把file.elf文件下载到指定的地址的时候，例如tftp 0x1234567 file.elf，如果直接go 0x12345678是不能运行的，因为机器不能识别头部的内容，这时候需要一个Bootelf去启动或者运行。
一般来说,.bin要比.elf小一些，因为不包含头和一些section描述。两者之间是可以通过工具相互转换的。
2.linux下利用TCP-Socket网络编程进行性能测试
硬件环境：t1040d4rdb客户端，p1010rdb服务器，千兆网络
测试要求：每一包大小15k，10ms收发一次，计算收发5次所消耗的时间和cpu使用率。
说明：根据tcp的规则，只要两块板子连接上了，测试也就无所谓客户端和服务器，最重要的是得到性能。周期10ms，在linux下可以用usleep-上一次执行消耗的时间，大致进行延时，误差不会太大，如果需要精确延时，可以使用应用层的定时器，或者用select来做，这个不赘述。
测试的思路如下：通过在收发的头尾打时间戳来计算时间，为了保证收发的过程不丢包，send和recv都采用循环收发的方式，保证数据量达到要求。
测试的时候，先起服务器，再起客户端，这里是计算了1000次的平均效率，收发包大小，和总的时间，测试的时候两块板子通过网线直连，具体测试程序如下：
linux server:
/* * created by xupeng :for net send and receive speed test * time :2017-03-09 */#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/socket.h>#include <netdb.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#include <errno.h>#include <malloc.h>#include <netinet/in.h>#include <arpa/inet.h>#include <sys/ioctl.h>#include <stdarg.h>#include <fcntl.h>#include <fcntl.h>#include <pthread.h> #include <sys/time.h>#define PERIOD_TIME10 //周期长度(ms)#define SEND_REC_NUM5 //收发次数(per period)#define SERVER_FLAG's'//服务器端buffer标识#define CLIENT_FLAG'c' //客户端buffer标识#define TARGET_ADDR"192.168.1.100"//服务器的ip地址#define PORT_NUMBER5001//端口号#define BLEN_VALUE65535//buffer大小 #define PACK_SIZE15000//每一包的大小 #define SERVER_MODE1#define CLIENT_MODE0static int send_socket; //客户端发送描述符static int receive_socket; //服务器端每个客户端的描述符static char *buffer;//buffer/*服务器端网络初始化*/ int net_server_init(void) { struct sockaddr_in serverAddr, clientAddr;int len; int sock; int size = PACK_SIZE;int port= PORT_NUMBER;int blen= BLEN_VALUE; if( (buffer = (char *)malloc(size)) == NULL){ printf ("cannot allocate buffer of size %d\n\n", size); return -1;} memset(buffer, '0' ,size); /* setup BSD socket for transmitting blasts */ bzero((char *) &serverAddr, sizeof (serverAddr)); bzero((char *) &clientAddr, sizeof (clientAddr)); if( (sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {printf ("cannot open socket\n");free (buffer);return -1;} serverAddr.sin_family = AF_INET; serverAddr.sin_port = htons (port); if( bind(sock, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) < 0){ printf ("bind OS_ERROR\n"); close (sock); free (buffer); return -1; } if (listen(sock, 5) < 0 ){ printf ("listen failed\n"); close (sock); free (buffer); return -1;} len = sizeof (clientAddr); while((receive_socket = accept(sock, (struct sockaddr *)&clientAddr, &len)) == -1) { /*阻塞等待*/ } if( setsockopt( receive_socket, SOL_SOCKET, SO_RCVBUF, (char *)&blen, sizeof(blen)) < 0 ) { printf("setsockopt SO_RCVBUF failed\n"); close(sock); close(receive_socket); free(buffer); return -1; } if( setsockopt( receive_socket, SOL_SOCKET, SO_SNDBUF, (char *)&blen, sizeof(blen)) < 0 ) { printf("setsockopt SO_SNDBUF failed\n"); close(sock); close(receive_socket); free(buffer); return -1; } //for(i = 0; i < 100; i++)//{//nrecv = read (receive_socket, buffer, size); //printf("The nrecv value is:%d\n",nrecv);////printf("The buffer0 value is:%c\n",buffer[0]); //if(nrecv)//{ ////memset(buffer, 's' ,size);//nsent = write(receive_socket, buffer, size); //printf("The nsent value is:%d\n",nsent);//udelay(10000); //}//} return 0; }int net_client_init(void) { struct sockaddr_in sin;char *targetAddr = TARGET_ADDR;int port = PORT_NUMBER;int blen = BLEN_VALUE;int size = PACK_SIZE;int nrecv;intnsent;int i; if ( (buffer = (char *)malloc(size)) == NULL ){ printf("cannot allocate buffer of size %d\n", size); return -1;} memset(buffer, '0' ,size); bzero((void *)&sin, sizeof(sin) ); if ( (send_socket = socket (AF_INET, SOCK_STREAM, 0)) < 0 ){printf ("cannot create socket\n");return -1;} sin.sin_addr.s_addr= inet_addr(targetAddr); sin.sin_port= htons(port); sin.sin_family = AF_INET; if (setsockopt(send_socket, SOL_SOCKET, SO_SNDBUF, (void *)&blen, sizeof(blen)) < 0 ){ printf("setsockopt SO_SNDBUF failed\n");free(buffer); close(send_socket); return -1;} if ( connect(send_socket, (struct sockaddr *)&sin, sizeof (sin)) < 0 ){ printf("connect failed: host %s port %d\n", inet_ntoa(sin.sin_addr), ntohs(sin.sin_port) ); free(buffer); close(send_socket); return -1;} // nsent = write(send_socket, buffer, size); // //for(i = 0; i < 500; i++)//{//nrecv = read (send_socket, buffer, size); ////printf("The nrecv value is:%d\n",nrecv);////printf("The buffer0 value is:%c\n",buffer[0]); //if(nrecv)//{ ////memset(buffer, 's' ,size);//nsent = write(send_socket, buffer, size); ////printf("The nsent value is:%d\n",nsent);//}//} return 0;}void net_server_task(void* arg){ unsigned int cyclic_time, i; double execu,execu1; int nsent; int nrecv;long long total_size= 0;unsigned inttotal_num = 0;doubletotal_time = 0;int left_length = 0;char *ptr;int size = PACK_SIZE;struct timeval t1,t2;struct timeval m1,m2;/* 创建单调速率定时器对象 */ //if ( rms_create(&period_cycle) != 0 )//{//printf("rms_create error:[%d]\n", errno);//}//memset(buffer, 's' ,size);nrecv = recv (receive_socket, buffer, size, 0); printf("\n");printf("Starting transmit!\n");printf("\n");while(1){ gettimeofday(&t1, NULL);for(i = 0; i < SEND_REC_NUM; i++) { ptr= buffer; left_length = size; while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);nsent = send(receive_socket, ptr, left_length, 0);if(nsent < 0){printf("send error!\n");nsent = 0;}left_length = left_length - nsent;ptr = ptr + nsent;//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("the lef length is :%d\n",left_length);//printf("the recv length is :%d\n",nsent[i]);total_size += nsent; } ptr= buffer; left_length = size; while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);nrecv = recv(receive_socket, ptr, left_length, 0);if(nrecv < 0){printf("recv error!\n");nrecv = 0;}left_length = left_length - nrecv;ptr = ptr + nrecv;//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("the lef length is :%d\n",left_length);//printf("the recv length is :%d\n",nrecv[i]);total_size += nrecv; } //printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);} gettimeofday(&t2, NULL);execu = 1000000*(t2.tv_sec - t1.tv_sec) + (t2.tv_usec - t1.tv_usec);execu = execu/1000;//printf("recv and send nums:[%d]--time:[%8.3lf]ms\n",SEND_REC_NUM,execu); total_time =total_time + execu;total_num++;if(total_num == 1000) {m1.tv_sec = m2.tv_sec;m1.tv_usec = m2.tv_usec;gettimeofday(&m2, NULL);execu1 = 1000000*(m2.tv_sec - m1.tv_sec) + (m2.tv_usec - m1.tv_usec);execu1 = execu1/1000;printf("The total size is:%lld\n",total_size);total_size = total_size/1024/1024;printf("the execu1 value is:%lf\n",execu1);printf("the ppc speed is :%8.3lf\n",(total_size*1000/execu1)); printf("The average time is:[%8.3lf]ms\n",(total_time/total_num)); total_num = 0;total_time= 0;total_size= 0;}} }void net_client_task(void* arg){int nsent; /* how many bytes sent */int nrecv; /* number of bytes received */int size = PACK_SIZE; //memset(buffer, 'c' ,size); nsent = write(send_socket, buffer, size); for(;;) { nrecv = read (send_socket, buffer, size); //printf("The buffer0 value is:%c\n",buffer[0]); //printf("The nrecv value is:%d\n",nrecv); if(nrecv) { //memset(buffer, 'c' ,size);nsent = write(send_socket, buffer, size); //printf("The nsent value is:%d\n",nsent);//printf("The function is:%s.line is:%d\n",__FUNCTION__,__LINE__);} } } int net_rms_test(unsigned int net_mode) { pthread_t t_id1,t_id2; if(net_mode == 1) {if( net_server_init() != 0){printf("net server int failed!\n");return -1;}if ( pthread_create(&t_id1, NULL, (void *)net_server_task, 0) == -1){printf("Error at pthread_create t_id -- errno[%d]!\n", errno);return -1;}pthread_join(t_id1,NULL); } else {if( net_client_init() != 0){printf("net client int failed!\n");return -1;}if ( pthread_create(&t_id2, NULL, (void *)net_client_task, 0) == -1){printf("Error at pthread_create t_id -- errno[%d]!\n", errno);return -1;}pthread_join(t_id2,NULL); }return 0;}int main(void){/* 添加用户代码 */printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);if( net_rms_test(SERVER_MODE) !=0 ) {printf("Test Init error!\n ");return; } return ;}linux client:
/*created by xupeng for ppc1040d4rdb net speed test * *2017-03-22 */#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/socket.h>#include <netdb.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#include <errno.h>#include <malloc.h>#include <netinet/in.h>#include <arpa/inet.h>#include <sys/ioctl.h>#include <stdarg.h>#include <fcntl.h>#include <fcntl.h>#include <pthread.h> #include <sys/time.h>/*客户端还是服务器端模式*/#define SERVER_MODE1#define CLIENT_MODE0#define PERIOD_TIME10 //周期长度(ms)#define SEND_REC_NUM5 //收发次数(per period)#define CURRENT_NET_NUM1//当前测试的网络路数 #define MAX_NET_NUM5//最大测试的网络路数 #define BLEN_VALUE65535//buffer大小 #define PACK_SIZE15000//每一包的大小 char *target_addr[MAX_NET_NUM]= {"192.168.22.128","192.168.22.129","192.168.22.130","192.168.22.131","192.168.22.132"};unsigned int port_number[MAX_NET_NUM]= {5001,5002,5003,5004,5005}; static int send_socket[MAX_NET_NUM]= {0};static char *buffer[MAX_NET_NUM];//buffer1static unsigned int net_num = CURRENT_NET_NUM;int net_client_init(void) { struct sockaddr_in sin[MAX_NET_NUM];char *targetAddr[MAX_NET_NUM];int port[MAX_NET_NUM];int blen = BLEN_VALUE;int size = PACK_SIZE;inti = 0; for(i = 0; i < net_num; i++) {targetAddr[i]= target_addr[i];port[i]= port_number[i];if ( (buffer[i] = (char *)malloc(size)) == NULL ){ printf("cannot allocate buffer1 of size %d\n", size);return -1;}memset(buffer[i], i ,size); bzero((void *)&sin[i], sizeof(sin[i]) );if ( (send_socket[i] = socket (AF_INET, SOCK_STREAM, 0)) < 0 ){printf ("cannot create socket[%d]\n",i);return -1;}printf("The target addr is:%s\n",targetAddr[i]);printf("The port num is:%d\n",port[i]);sin[i].sin_addr.s_addr= inet_addr(targetAddr[i]);sin[i].sin_port= htons(port[i]);sin[i].sin_family = AF_INET;if (setsockopt(send_socket[i], SOL_SOCKET, SO_SNDBUF, (void *)&blen, sizeof(blen)) < 0 ){ printf("setsockopt[%d] SO_SNDBUF failed\n",i);free(buffer[i]);close(send_socket[i]); return -1;}if (setsockopt(send_socket[i], SOL_SOCKET, SO_RCVBUF, (void *)&blen, sizeof(blen)) < 0 ){ printf("setsockopt[%d] SO_SNDBUF failed\n",i);free(buffer[i]);close(send_socket[i]); return -1;}if (connect(send_socket[i], (struct sockaddr *)&sin[i], sizeof (sin[i])) < 0 ){ printf("connect failed: host %s port %d\n", inet_ntoa(sin[i].sin_addr), ntohs(sin[i].sin_port) ); free(buffer[i]);close(send_socket[i]);return -1; } printf("server [%d] has connect!\n",i);}//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__); return 0;}void net_client_task(void* arg){unsigned int i,j; double execu,execu1; int nsent[MAX_NET_NUM]; int nrecv[MAX_NET_NUM];intsize = PACK_SIZE;long long total_size= 0;unsigned inttotal_num = 0;doubletotal_time = 0;unsigned int sleep_time_reeduce= 0;struct timeval t1,t2;struct timeval m1,m2;int left_length = 0;char *ptr;//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);/*先发一包同步*/for(i = 0; i < net_num; i++){nsent[i] = send(send_socket[i], buffer[i], size, 0);}//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);printf("\n");printf("Starting transmit!\n");printf("\n");while(1){ /*测试时钟是否准确*/#if 0gettimeofday(&t1, NULL);usleep(10000); gettimeofday(&t2, NULL);printf("t2 sec is :%d t1 sec is :%d\n",t2.tv_sec,t1.tv_sec);printf("t2 usec is :%d t1 usec is :%d\n",t2.tv_usec,t1.tv_usec);execu = 1000000*(t2.tv_sec - t1.tv_sec) + (t2.tv_usec - t1.tv_usec);execu = execu/1000; printf("gettime of day 1s time:[%10.5lf]ms\n",execu); #endif/*粗略循环周期，10ms*///printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);usleep(10000 - sleep_time_reeduce); /*计算收发五次所需要的时间*/gettimeofday(&t1, NULL);for(i = 0; i < net_num; i++){for(j = 0; j < SEND_REC_NUM; j++) { ptr= buffer[i]; left_length = size; while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);nrecv[i] = recv(send_socket[i], ptr, left_length, 0);if(nrecv[i] < 0){printf("recv error!\n");nrecv[i] = 0;}left_length = left_length - nrecv[i];ptr = ptr + nrecv[i];//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("the lef length is :%d\n",left_length);//printf("the recv length is :%d\n",nrecv[i]);total_size += nrecv[i]; } //printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);ptr= buffer[i]; left_length = size; while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);nsent[i] = send(send_socket[i], ptr, left_length, 0);if(nsent[i] < 0){printf("send error!\n");nsent[i] = 0;}left_length = left_length - nsent[i];ptr = ptr + nsent[i];//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("the lef length is :%d\n",left_length);//printf("the recv length is :%d\n",nsent[i]);total_size += nsent[i]; } //printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);} }gettimeofday(&t2, NULL);execu = 1000000*(t2.tv_sec - t1.tv_sec) + (t2.tv_usec - t1.tv_usec);sleep_time_reeduce = execu;execu = execu/1000;//printf("recv and send nums:[%d]--time:[%8.3lf]ms\n",SEND_REC_NUM,execu); total_time =total_time + execu;total_num++;if(total_num == 1000) {m1.tv_sec = m2.tv_sec;m1.tv_usec = m2.tv_usec;gettimeofday(&m2, NULL);execu1 = 1000000*(m2.tv_sec - m1.tv_sec) + (m2.tv_usec - m1.tv_usec);execu1 = execu1/1000;printf("The total size is:%lld\n",total_size);total_size = total_size/1024/1024;printf("the execu1 value is:%lf\n",execu1);printf("the ppc speed is :%8.3lf\n",(total_size*1000/execu1)); printf("The average time is:[%8.3lf]ms\n",(total_time/total_num)); total_num = 0;total_time= 0; total_size= 0;}} } int net_rms_test(unsigned int net_mode) { pthread_t t_id; if(net_mode == 1) { printf("please select client mode!\n"); } else {if( net_client_init() != 0){printf("net client int failed!\n");return -1;}printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);if ( pthread_create(&t_id, NULL, (void *)net_client_task, 0) == -1){printf("Error at pthread_create t_id -- errno[%d]!\n", errno);return -1;}pthread_join(t_id,NULL); }return 0;}int main(void){/* 添加用户代码 */printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);if( net_rms_test(CLIENT_MODE) !=0 ) {printf("Test Init error!\n ");return; } return ;}
PC端server代码，可以用板子和pc端连接进行测试，板子作为客户端：
#include <Windows.h>#include <stdio.h>#include "winsock.h"#pragma comment(lib, "wsock32.lib")#define PCAK_SIZE 15000unsigned int pack_size_t= PCAK_SIZE; char recvBuf[PCAK_SIZE] = ""; #if 1DWORD WINAPI ThreadProc(LPVOID lpParameter) {SOCKET connectSocket = (SOCKET)lpParameter;int recvNum = 0;int sendNum = 0;int left_length = 0;char *ptr;ptr= recvBuf; left_length = pack_size_t; /*先收一包*/recv(connectSocket, recvBuf, pack_size_t, 0);printf("connected! starting recv and send...\n"); while(TRUE) {ptr= recvBuf;left_length = pack_size_t; //printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);sendNum = send(connectSocket, recvBuf, left_length, 0);if(sendNum < 0){printf("send error!\n");sendNum = 0;}left_length = left_length - sendNum;ptr = ptr + sendNum;//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);}//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);ptr= recvBuf;left_length = pack_size_t; while(left_length > 0){//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);recvNum = recv(connectSocket, ptr, left_length, 0);if(recvNum < 0){printf("recv error!\n");recvNum = 0;}left_length = left_length - recvNum;ptr = ptr + recvNum;//printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);} //printf("FUNC:%s--LINE:%d\n",__FUNCTION__,__LINE__);//printf("send num is:%d,recv num is:%d\n",sendNum,recvNum); }closesocket(connectSocket); return 0; }int tcp_transfor(){WORD wVersionRequested;WSADATA wsaData;SOCKET listenSocket = 0;SOCKET connectSocket = 0;char TCPClientRevBuf[1024*17] = "";int num = 0;long sumRecv= 0;SOCKADDR_IN tcpser_addr, tcpcli_addr;int client_len = 0;HANDLE hThread = 0;int blen= 65535;memset(recvBuf,'s',pack_size_t);//套接字版本协商wVersionRequested = MAKEWORD(2,2);if (WSAStartup(wVersionRequested, &wsaData) != 0){printf("version error!\n");return -1;} //创建监听套接字if((listenSocket = socket(AF_INET, SOCK_STREAM, 0)) == -1){ printf("TCP server socket create fail!\n");return -1;} //格式化服务端地址数值memset(tcpser_addr.sin_zero,0,8);tcpser_addr.sin_family= AF_INET;tcpser_addr.sin_port = htons(5001); //tcpser_addr.sin_port = htons(6000); tcpser_addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);/*if(connect(TCPClientSocket,(struct sockaddr *)&tcpser_addr,sizeof(tcpser_addr))==-1){printf("connect to server fail!\n");closesocket(TCPClientSocket);return -1;}*/if (setsockopt(listenSocket, SOL_SOCKET, SO_SNDBUF, (void *)&blen, sizeof(blen)) < 0 ){printf("setsockopt SO_SNDBUF failed\n");close(listenSocket); return -1;}if (setsockopt(listenSocket, SOL_SOCKET, SO_RCVBUF, (void *)&blen, sizeof(blen)) < 0 ){printf("setsockopt SO_RCVBUF failed\n");close(listenSocket); return -1;}if(bind(listenSocket , (struct sockaddr*)&tcpser_addr , sizeof(tcpser_addr)) < 0) { printf("bind error\n"); return -1; }if(listen(listenSocket , 10) < 0) { printf("listen error"); return -1; }while(1){/*num = recv(TCPClientSocket, TCPClientRevBuf, 1024, 0);sumRecv += num;num = 0;*/client_len = sizeof(tcpcli_addr);if((connectSocket = accept(listenSocket , (struct sockaddr *)&tcpcli_addr , &client_len)) < 0 ) { printf("accept error\n"); return -1; }hThread = CreateThread(NULL,//默认安全级别 0,//默认栈大小 ThreadProc,//线程函数 (void*)connectSocket, //函数没有参数 0,//创建后直接运行 NULL); }}#endif#if 0int my_send(int fd,void *buffer,int length) { int bytes_left; int written_bytes; char *ptr; ptr=buffer; bytes_left=length; while(bytes_left>0) { written_bytes=send(fd,ptr,bytes_left,0); if(written_bytes<=0) { return(-1); } bytes_left-=written_bytes; ptr+=written_bytes; } return(0); } int my_recv(int fd,void *buffer,int length) { int bytes_left = 0; int bytes_read = 0; char *ptr; ptr=buffer; bytes_left=length; while(bytes_left>0) { bytes_read=recv(fd,ptr,bytes_read,0); if(bytes_read<0) { return(-1); } else if(bytes_read==0) break; bytes_left-=bytes_read; ptr+=bytes_read; } return(length-bytes_left); } DWORD WINAPI ThreadProc(LPVOID lpParameter) {SOCKET connectSocket = (SOCKET)lpParameter;int recvNum = 0;int sendNum = 0;/*先收一包*/recv(connectSocket, recvBuf, pack_size_t, 0);printf("connected! starting recv and send...\n"); while(TRUE) {sendNum = my_send(connectSocket, recvBuf, pack_size_t);if(sendNum == 0){recvNum = my_recv(connectSocket, recvBuf, pack_size_t); }//printf("send num is:%d,recv num is:%d\n",sendNum,recvNum); }closesocket(connectSocket); return 0; }int tcp_transfor(){WORD wVersionRequested;WSADATA wsaData;SOCKET listenSocket = 0;SOCKET connectSocket = 0;char TCPClientRevBuf[1024*17] = "";int num = 0;long sumRecv= 0;SOCKADDR_IN tcpser_addr, tcpcli_addr;int client_len = 0;HANDLE hThread = 0;int blen= 65535;//套接字版本协商wVersionRequested = MAKEWORD(2,2);if (WSAStartup(wVersionRequested, &wsaData) != 0){printf("version error!\n");return -1;} //创建监听套接字if((listenSocket = socket(AF_INET, SOCK_STREAM, 0)) == -1){ printf("TCP server socket create fail!\n");return -1;} //格式化服务端地址数值memset(tcpser_addr.sin_zero,0,8);tcpser_addr.sin_family= AF_INET;tcpser_addr.sin_port = htons(5001); //tcpser_addr.sin_port = htons(6000); tcpser_addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);/*if(connect(TCPClientSocket,(struct sockaddr *)&tcpser_addr,sizeof(tcpser_addr))==-1){printf("connect to server fail!\n");closesocket(TCPClientSocket);return -1;}*/if (setsockopt(listenSocket, SOL_SOCKET, SO_SNDBUF, (void *)&blen, sizeof(blen)) < 0 ){printf("setsockopt SO_SNDBUF failed\n");close(listenSocket); return -1;}if (setsockopt(listenSocket, SOL_SOCKET, SO_RCVBUF, (void *)&blen, sizeof(blen)) < 0 ){printf("setsockopt SO_RCVBUF failed\n");close(listenSocket); return -1;}if(bind(listenSocket , (struct sockaddr*)&tcpser_addr , sizeof(tcpser_addr)) < 0) { printf("bind error\n"); return -1; }if(listen(listenSocket , 10) < 0) { printf("listen error"); return -1; }while(1){/*num = recv(TCPClientSocket, TCPClientRevBuf, 1024, 0);sumRecv += num;num = 0;*/client_len = sizeof(tcpcli_addr);if((connectSocket = accept(listenSocket , (struct sockaddr *)&tcpcli_addr , &client_len)) < 0 ) { printf("accept error\n"); return -1; }hThread = CreateThread(NULL,//默认安全级别 0,//默认栈大小 ThreadProc,//线程函数 (void*)connectSocket, //函数没有参数 0,//创建后直接运行 NULL); }}#endifint main(){if(tcp_transfor() == -1){printf("tcp run error!\n");}return 0;}
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