diff --git a/cc.c b/cc.c
deleted file mode 100644
index 172a7c9..0000000
--- a/cc.c
+++ /dev/null
@@ -1,74 +0,0 @@
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <arpa/inet.h>
-
-int main(int argc, char *argv[])
-{
-	int sockfd = 0, n = 0;
-	char recvBuff[1024];
-	struct sockaddr_in serv_addr;
-
-	if(argc != 2)
-	{
-		printf("\n Usage: %s <ip of server> \n",argv[0]);
-		return 1;
-	}
-
-	memset(recvBuff, '0',sizeof(recvBuff));
-
-	/* a socket is created through call to socket() function */
-	if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
-	{
-		printf("\n Error : Could not create socket \n");
-		return 1;
-	}
-
-	memset(&serv_addr, '0', sizeof(serv_addr));
-
-	serv_addr.sin_family = AF_INET;
-	serv_addr.sin_port = htons(5000);
-
-	if(inet_pton(AF_INET, argv[1], &serv_addr.sin_addr)<=0)
-	{
-		printf("\n inet_pton error occured\n");
-		return 1;
-	}
-
-	/* Information like IP address of the remote host and its port is
-	 * bundled up in a structure and a call to function connect() is made
-	 * which tries to connect this socket with the socket (IP address and port)
-	 * of the remote host
-	 */
-	if( connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
-	{
-		printf("\n Error : Connect Failed \n");
-		return 1;
-	}
-
-	/* Once the sockets are connected, the server sends the data (date+time)
-	 * on clients socket through clients socket descriptor and client can read it
-	 * through normal read call on the its socket descriptor.
-	 */
-	while ( (n = read(sockfd, recvBuff, sizeof(recvBuff)-1)) > 0)
-	{
-		recvBuff[n] = 0;
-		if(fputs(recvBuff, stdout) == EOF)
-		{
-			printf("\n Error : Fputs error\n");
-		}
-	}
-
-	if(n < 0)
-	{
-		printf("\n Read error \n");
-	}
-
-	return 0;
-}
diff --git a/client.c b/client.c
deleted file mode 100644
index 07003c7..0000000
--- a/client.c
+++ /dev/null
@@ -1,99 +0,0 @@
-#include "inclu.h"
-
- 
-/*readline函数实现*/
-ssize_t readline(int fd, char *vptr, size_t maxlen)
-{
-    ssize_t    n, rc;
-    char    c, *ptr;
- 
-    ptr = vptr;
-    for (n = 1; n < maxlen; n++) {
-        if ( (rc = read(fd, &c,1)) == 1) {
-            *ptr++ = c;
-            if (c == '\n')
-                break;    /* newline is stored, like fgets() */
-        } else if (rc == 0) {
-            *ptr = 0;
-            return(n - 1);    /* EOF, n - 1 bytes were read */
-        } else
-            return(-1);        /* error, errno set by read() */
-    }
- 
-    *ptr = 0;    /* null terminate like fgets() */
-    return(n);
-}
- 
- 
-int main(int argc , char ** argv)
-{
-    /*声明套接字和链接服务器地址*/
-    int sockfd;
-    struct sockaddr_in servaddr;
- 
-    /*判断是否为合法输入*/
-    if(argc != 2)
-    {
-        perror("usage:tcpcli <IPaddress>");
-        exit(1);
-    }//if
- 
-    /*(1) 创建套接字*/
-    if((sockfd = socket(AF_INET , SOCK_STREAM , 0)) == -1)
-    {
-        perror("socket error");
-        exit(1);
-    }//if
- 
-    /*(2) 设置链接服务器地址结构*/
-    bzero(&servaddr , sizeof(servaddr));
-    servaddr.sin_family = AF_INET;
-    servaddr.sin_port = htons(PORT);
-    if(inet_pton(AF_INET , argv[1] , &servaddr.sin_addr) < 0)
-    {
-        printf("inet_pton error for %s\n",argv[1]);
-        exit(1);
-    }//if
- 
-    /*(3) 发送链接服务器请求*/
-    if( connect(sockfd , (struct sockaddr *)&servaddr , sizeof(servaddr)) < 0)
-    {
-        perror("connect error");
-        exit(1);
-    }//if
- 
-    /*(4) 消息处理*/
-    char sendline[MAX_LINE] , recvline[MAX_LINE];
-    while(fgets(sendline , MAX_LINE , stdin) != NULL)    
-    {
-        write(sockfd , sendline , strlen(sendline));
- 
-        if(readline(sockfd , recvline , MAX_LINE) == 0)
-        {
-            perror("server terminated prematurely");
-            exit(1);
-        }//if
- 
-        if(fputs(recvline , stdout) == EOF)
-        {
-            perror("fputs error");
-            exit(1);
-        }//if
-
-        if(readline(sockfd , recvline , MAX_LINE) == 0)
-        {
-            perror("server terminated prematurely");
-            exit(1);
-        }//if
- 
-        if(fputs(recvline , stdout) == EOF)
-        {
-            perror("fputs error");
-            exit(1);
-        }//if
-
-    }//while
- 
-    /*(5) 关闭套接字*/
-    close(sockfd);
-}
diff --git a/client/def.h b/client/def.h
new file mode 100644
index 0000000..4729c47
--- /dev/null
+++ b/client/def.h
@@ -0,0 +1,9 @@
+int sockfd;
+int sockad;
+char s[3];
+struct sockaddr_in seraddr;
+struct sockaddr_in cliaddr;
+int len;
+
+
+void init_con();
diff --git a/client/func/init_con.c b/client/func/init_con.c
new file mode 100644
index 0000000..61c4be1
--- /dev/null
+++ b/client/func/init_con.c
@@ -0,0 +1,9 @@
+void init_con(){
+	sockad = socket(AF_INET,SOCK_STREAM,0);
+	memset(&seraddr,0,sizeof(struct sockaddr_in));
+	seraddr.sin_family = AF_INET;
+	seraddr.sin_port = htons(8000);
+	seraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+	connect(sockad,(struct sockaddr *)&seraddr, sizeof(struct sockaddr));
+
+}
diff --git a/inclu.h b/client/inclu.h
similarity index 53%
rename from inclu.h
rename to client/inclu.h
index 0fd133b..d14c918 100644
--- a/inclu.h
+++ b/client/inclu.h
@@ -1,5 +1,11 @@
-#include "def.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include "def.h"
+
+#include "func/init_con.c"
diff --git a/client/main.c b/client/main.c
new file mode 100644
index 0000000..358410b
--- /dev/null
+++ b/client/main.c
@@ -0,0 +1,14 @@
+#include "inclu.h"
+
+int main(int argc, char *argv[])
+{
+
+	init_con();
+	len=recv(sockad,s,1024,0);
+//	s[len]='\0';
+	printf("%s\n",s);
+	close(sockad);
+
+
+	return EXIT_SUCCESS;
+}
diff --git a/cli.py b/python/cli.py
similarity index 100%
rename from cli.py
rename to python/cli.py
diff --git a/ser.py b/python/ser.py
similarity index 100%
rename from ser.py
rename to python/ser.py
diff --git a/s.c b/s.c
deleted file mode 100644
index 967d00e..0000000
--- a/s.c
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "inclu.h"
-
-int main(int argc,char **argv)
-{
-    sockfd = socket(AF_INET,SOCK_STREAM,0);
-    bzero(&seraddr,sizeof(seraddr));
-    seraddr.sin_family = AF_INET;
-    seraddr.sin_port = htons(800);
-    seraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-    bind(sockfd,(struct sockaddr *)&seraddr,sizeof(struct sockaddr));
-    listen(sockfd, 5);
-    accept(sockad, NULL, NULL);
-    send(sockad,s , sizeof(char), 0);
-    //recv(sockad,  const void *buf,  size_t  nbytes,  int  flags);
-
-    return 0;
-
-}
diff --git a/server.c b/server.c
deleted file mode 100644
index 54859d9..0000000
--- a/server.c
+++ /dev/null
@@ -1,76 +0,0 @@
-#include "inclu.h"
- 
-int main(int argc , char **argv)
-{
-	char second[]="second";
-    /*声明服务器地址和客户链接地址*/
-    struct sockaddr_in servaddr , cliaddr;
- 
-    /*声明服务器监听套接字和客户端链接套接字*/
-    int listenfd , connfd;
-    pid_t childpid;
- 
-    /*声明缓冲区*/
-    char buf[MAX_LINE];
- 
-    socklen_t clilen;
- 
-    /*(1) 初始化监听套接字listenfd*/
-    if((listenfd = socket(AF_INET , SOCK_STREAM , 0)) < 0)
-    {
-        perror("socket error");
-        exit(1);
-    }//if
- 
-    /*(2) 设置服务器sockaddr_in结构*/
-    bzero(&servaddr , sizeof(servaddr));
- 
-    servaddr.sin_family = AF_INET;
-    servaddr.sin_addr.s_addr = htonl(INADDR_ANY); //表明可接受任意IP地址
-    servaddr.sin_port = htons(PORT);
- 
-    /*(3) 绑定套接字和端口*/
-    if(bind(listenfd , (struct sockaddr*)&servaddr , sizeof(servaddr)) < 0)
-    {
-        perror("bind error");
-        exit(1);
-    }//if
- 
-    /*(4) 监听客户请求*/
-    if(listen(listenfd , LISTENQ) < 0)
-    {
-        perror("listen error");
-        exit(1);
-    }//if
- 
-    /*(5) 接受客户请求*/
-    for( ; ; )
-    {
-        clilen = sizeof(cliaddr);
-        if((connfd = accept(listenfd , (struct sockaddr *)&cliaddr , &clilen)) < 0 )
-        {
-            perror("accept error");
-            exit(1);
-        }//if
- 
-        //新建子进程单独处理链接
-        if((childpid = fork()) == 0) 
-        {
-            close(listenfd);
-            //str_echo
-            ssize_t n;
-            char buff[MAX_LINE];
-            while((n = read(connfd , buff , MAX_LINE)) > 0)
-            {
-                write(connfd , buff , n);
-                write(connfd , second , 6);
-
-            }
-            exit(0);
-        }//if
-        close(connfd);
-    }//for
-    
-    /*(6) 关闭监听套接字*/
-    close(listenfd);
-}
diff --git a/def.h b/server/def.h
similarity index 67%
rename from def.h
rename to server/def.h
index 1a2f57c..0233ff5 100644
--- a/def.h
+++ b/server/def.h
@@ -1,5 +1,8 @@
 int sockfd;
 int sockad;
-char *s;
+char s[3];
 struct sockaddr_in seraddr;
 struct sockaddr_in cliaddr;
+int len;
+
+void init_con();
diff --git a/server/func/init_con.c b/server/func/init_con.c
new file mode 100644
index 0000000..0fc2ca4
--- /dev/null
+++ b/server/func/init_con.c
@@ -0,0 +1,3 @@
+void init_con(){
+
+}
diff --git a/server/inclu.h b/server/inclu.h
new file mode 100644
index 0000000..6be1397
--- /dev/null
+++ b/server/inclu.h
@@ -0,0 +1,12 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include "def.h"
+
+
+#include "func/init_con.c"
diff --git a/server/main.c b/server/main.c
new file mode 100644
index 0000000..888b956
--- /dev/null
+++ b/server/main.c
@@ -0,0 +1,27 @@
+#include "inclu.h"
+
+int main(int argc,char **argv)
+{
+	len=3;
+	int sin_size;
+	sin_size=sizeof(struct sockaddr_in);
+	s[0]='3';
+	s[1]='4';
+	s[2]='1';
+	sockfd = socket(AF_INET,SOCK_STREAM,0);
+	memset(&seraddr,0,sizeof(struct sockaddr_in));
+	seraddr.sin_family = AF_INET;
+	seraddr.sin_port = htons(8000);
+	seraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+	bind(sockfd,(struct sockaddr *)&seraddr,sizeof(struct sockaddr));
+	listen(sockfd, 5);
+	printf("start listen\n");
+	sockad=accept(sockfd, (struct sockaddr *)&cliaddr, &sin_size);
+	send(sockad,s, len, 0);
+	close(sockfd);
+	close(sockad);
+    //recv(sockad,  const void *buf,  size_t  nbytes,  int  flags);
+
+	return 0;
+
+}
diff --git a/ss.c b/ss.c
deleted file mode 100644
index 186dd61..0000000
--- a/ss.c
+++ /dev/null
@@ -1,63 +0,0 @@
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/types.h>
-#include <time.h>
-
-int main(int argc, char *argv[])
-{
-	int listenfd = 0, connfd = 0;
-	struct sockaddr_in serv_addr;
-
-	char sendBuff[1025];
-	time_t ticks;
-
-	/* creates an UN-named socket inside the kernel and returns
-	 * an integer known as socket descriptor
-	 * This function takes domain/family as its first argument.
-	 * For Internet family of IPv4 addresses we use AF_INET
-	 */
-	listenfd = socket(AF_INET, SOCK_STREAM, 0);
-	memset(&serv_addr, '0', sizeof(serv_addr));
-	memset(sendBuff, '0', sizeof(sendBuff));
-
-	serv_addr.sin_family = AF_INET;
-	serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
-	serv_addr.sin_port = htons(5000);
-
-	/* The call to the function "bind()" assigns the details specified
-	 * in the structure 『serv_addr' to the socket created in the step above
-	 */
-	bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
-
-	/* The call to the function "listen()" with second argument as 10 specifies
-	 * maximum number of client connections that server will queue for this listening
-	 * socket.
-	 */
-	listen(listenfd, 10);
-
-	while(1)
-	{
-		/* In the call to accept(), the server is put to sleep and when for an incoming
-		 * client request, the three way TCP handshake* is complete, the function accept()
-		 * wakes up and returns the socket descriptor representing the client socket.
-		 */
-		connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);
-
-		/* As soon as server gets a request from client, it prepares the date and time and
-		 * writes on the client socket through the descriptor returned by accept()
-		 */
-		ticks = time(NULL);
-		snprintf(sendBuff, sizeof(sendBuff), "%.24s\r\n", ctime(&ticks));
-		write(connfd, sendBuff, strlen(sendBuff));
-
-		close(connfd);
-		sleep(1);
-	}
-}
-
diff --git a/sss.c b/sss.c
deleted file mode 100644
index 15f489a..0000000
--- a/sss.c
+++ /dev/null
@@ -1,73 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <netinet/tcp.h>
-#include <netdb.h>
-#include <errno.h>
-
-int main(int argc, const char * argv[]) {
-    // insert code here...
-    printf("Hello, World!\n");
-    
-    int server_sockfd; //服务端套接字
-    int client_sockfd; //客户端套接字
-    int len;
-    struct sockaddr_in my_add; //服务器网络地址结构体
-    struct sockaddr_in remote_addr; //客户端网络地址结构体
-    socklen_t sin_size;
-    char buf[BUFSIZ]; //数据传送的缓冲区
-    memset(&my_add,0,sizeof(my_add)); //数据初始化--清零
-    my_add.sin_family = AF_INET; //设置为IP通信
-    my_add.sin_addr.s_addr = INADDR_ANY; //服务器IP地址--允许连接到所有本地地址上
-    my_add.sin_port = htons(8000); //服务器端口号
-    
-    //创建服务器端套接字--IPV4协议 ，面向连接通信，TCP协议
-    if((server_sockfd=socket(PF_INET, SOCK_STREAM, 0))<0) {
-        perror("socket");
-        return 1;
-    }
-    
-    //将套接字绑定到服务器的网络地址上
-    if (bind(server_sockfd, (struct sockaddr *)&my_add, sizeof(struct sockaddr))<0) {
-        perror("bind");
-        return 1;
-    }
-    
-    //监听连接请求--监听队列长度为5
-    listen(server_sockfd, 5);
-    sin_size = sizeof(struct sockaddr_in);
-    
-    //等待客户端连接请求到达
-    if ((client_sockfd=accept(server_sockfd, (struct sockaddr *)&remote_addr, &sin_size))<0) {
-        perror("accept");
-        return 1;
-    }
-    
-    printf("accept client %s\n",inet_ntoa(remote_addr.sin_addr));
-    len = send(client_sockfd, "welcome to my server\n", 21, 0); //发送欢迎信息
-    
-    //接受客户端的数据并将其发送给客户端--recv返回接收到的字节数，send返回发送的字节数
-    while (1) {
-	memset(buf,0,sizeof(buf));
-	len = recv(client_sockfd, buf, BUFSIZ, 0);
-	send(client_sockfd,buf, len, 0);
-        buf[len]='\0';
-        printf("receive:%s\n",buf);
-	if(buf[0]=='q'){
-		send(client_sockfd,'q', 1, 0);
-		break;
-	}
-    }
-    
-    close(client_sockfd);
-    close(server_sockfd);
-    
-    return 0;
-}
-
diff --git a/ccc.c b/test/cli.c
similarity index 98%
rename from ccc.c
rename to test/cli.c
index afd1310..afc7c8d 100644
--- a/ccc.c
+++ b/test/cli.c
@@ -28,13 +28,12 @@ int main(int argc, const char * argv[]) {
 
 
     client_sockfd=socket(PF_INET, SOCK_STREAM, 0);
-    
     connect(client_sockfd, (struct sockaddr *)&remota_addr, sizeof(struct sockaddr));
     
     printf("connect to server\n");
     
     len = recv(client_sockfd, buf, BUFSIZ, 0);
-    buf[len]='/0';
+    buf[len]='\0';
     printf("%s",buf);    
 
 
diff --git a/test/ser.c b/test/ser.c
new file mode 100644
index 0000000..7071a82
--- /dev/null
+++ b/test/ser.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+#include <errno.h>
+
+int main(int argc, const char * argv[]) {
+    char quit='q';
+    int server_sockfd;
+    int client_sockfd;
+    int len;
+    struct sockaddr_in my_add;
+    struct sockaddr_in remote_addr;
+    socklen_t sin_size;
+    char buf[BUFSIZ];
+    memset(&my_add,0,sizeof(my_add));
+    my_add.sin_family = AF_INET;
+    my_add.sin_addr.s_addr = INADDR_ANY;
+    my_add.sin_port = htons(8000);
+    
+    server_sockfd=socket(PF_INET, SOCK_STREAM, 0);
+    
+    bind(server_sockfd, (struct sockaddr *)&my_add, sizeof(struct sockaddr));
+    
+    listen(server_sockfd, 5);
+    sin_size = sizeof(struct sockaddr_in);
+    
+    client_sockfd=accept(server_sockfd, (struct sockaddr *)&remote_addr, &sin_size);
+    
+    printf("accept client %s\n",inet_ntoa(remote_addr.sin_addr));
+    len = send(client_sockfd, "welcome to my server\n", 21, 0);
+    
+    while (1) {
+	memset(buf,0,sizeof(buf));
+	len = recv(client_sockfd, buf, BUFSIZ, 0);
+	send(client_sockfd,buf, len, 0);
+        buf[len]='\0';
+        printf("receive:%s\n",buf);
+	if(buf[0]=='q'){
+		send(client_sockfd,&quit, 1, 0);
+		break;
+	}
+    }
+    close(client_sockfd);
+    close(server_sockfd);
+    return 0;
+}
+