From 1ecde61a160727deb44f8b26609bdbc70263e7ea Mon Sep 17 00:00:00 2001
From: ningling <2907616355@qq.com>
Date: Wed, 10 May 2023 03:15:54 +0000
Subject: [PATCH] update 6/client.c.

Signed-off-by: ningling <2907616355@qq.com>
---
 6/client.c | 121 ++++++++++++++++++++++++++---------------------------
 1 file changed, 60 insertions(+), 61 deletions(-)

diff --git a/6/client.c b/6/client.c
index f42bc07..cab54c6 100644
--- a/6/client.c
+++ b/6/client.c
@@ -1,65 +1,64 @@
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
 #include <arpa/inet.h>
-#include <stdlib.h>
+#include <fcntl.h>
 #include <stdio.h>
-#include <errno.h>
 #include <string.h>
- 
-#define MYPORT 8887
-char* SERVERIP = "127.0.0.1";
- 
-#define ERR_EXIT(m) 
-    do 
-{ 
-    perror(m); 
-    exit(EXIT_FAILURE); 
-    } while(0)
- 
-void echo_cli(int sock)
-{
-    struct sockaddr_in servaddr;
-    memset(&servaddr, 0, sizeof(servaddr));
-    servaddr.sin_family = AF_INET;
-    servaddr.sin_port = htons(MYPORT);
-    servaddr.sin_addr.s_addr = inet_addr(SERVERIP);
-    
-    int ret;
-    char sendbuf[1024] = {0};
-    char recvbuf[1024] = {0};
-    while (fgets(sendbuf, sizeof(sendbuf), stdin) != NULL)
-    {
-        
-        printf("向服务器发送：%s\n",sendbuf);
-        sendto(sock, sendbuf, strlen(sendbuf), 0, (struct sockaddr *)&servaddr, sizeof(servaddr));
-        
-        ret = recvfrom(sock, recvbuf, sizeof(recvbuf), 0, NULL, NULL);
-        if (ret == -1)
-        {
-            if (errno == EINTR)
-                continue;
-            ERR_EXIT("recvfrom");
-        }
-        printf("从服务器接收：%s\n",recvbuf);
-        
-        memset(sendbuf, 0, sizeof(sendbuf));
-        memset(recvbuf, 0, sizeof(recvbuf));
-    }
-    
-    close(sock);
-    
-    
-}
- 
-int main(void)
-{
-    int sock;
-    if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) < 0)
-        ERR_EXIT("socket");
-    
-    echo_cli(sock);
-    
-    return 0;
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main() {
+  // 创建套接字
+  int sock = socket(AF_INET, SOCK_DGRAM, 0);//TCP/IP – IPv4，UDP流
+  if (sock == -1) {
+    perror("socket create error");
+    return -1;
+  }
+
+  // 设置服务器地址
+  struct sockaddr_in server_address;
+  memset(&server_address, 0, sizeof(server_address));
+  server_address.sin_family = AF_INET;
+  server_address.sin_addr.s_addr = inet_addr("127.0.0.1");//IP地址转换，绑定IP“127.0.0.1”
+  server_address.sin_port = htons(9999);//字节序转换
+
+  // // 连接服务器
+  // if (connect(sock, (struct sockaddr *)&server_address,
+  //             sizeof(server_address)) == -1) {
+  //   perror("connect error");
+  //   return -1;
+  // }
+
+  // 读取文件
+  char buffer[1024];
+  int fileFd = open("file.txt", O_RDONLY);
+  if (read(fileFd, buffer, 1024) == -1) {
+    perror("read error!");
+    return -1;
+  }
+  close(fileFd);
+
+  // 发送数据
+  int ret = sendto(sock, buffer, 1024, 0, (struct sockaddr *)&server_address,
+                   sizeof(server_address));
+  if (ret == -1) {
+    perror("Failed to send data.");
+    return -1;
+  }
+
+  // 接收数据
+  memset(buffer, 0, 1024);
+  int length = recvfrom(sock, buffer, 1024, 0, NULL, NULL);
+  if (length == -1) {
+    perror("Failed to receive data.");
+    return -1;
+  }
+
+  // 输出数据
+  printf("Received file content: %s\n", buffer);
+
+  // 关闭套接字
+  close(sock);
+
+  return 0;
 }
\ No newline at end of file
-- 
Gitee