首先我們在server所在的檔案夾中放置一個demo.jpeg檔案作為源檔案，然後我們可以發現此時client所在的檔案夾中沒有該檔案。接着我們在TCP_client視窗中輸入demo.jpeg。
我們發現執行成功之後，client所在的檔案夾中多出來了一個demo.jpeg檔案，打開它和server中的demo.jpeg進行對比，發現結果一緻。
#include<netinet/in.h> // sockaddr_in
#include<sys/types.h> // socket
#include<sys/socket.h> // socket
#include<stdio.h> // printf
#include<stdlib.h> // exit
#include<string.h> // bzero
#include <arpa/inet.h>
#include <unistd.h>#define SERVER_PORT 8000
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512 int main()
{
//聲明并初始化一個用戶端的socket位址結構
struct sockaddr_in client_addr;
bzero(&client_addr,sizeof(client_addr));
client_addr.sin_family=AF_INET;
client_addr.sin_addr.s_addr=htons(INADDR_ANY);
client_addr.sin_port=htons(0); //建立socket,若成功，傳回socket描述符
int client_socket_fd = socket(AF_INET, SOCK_STREAM, 0);
if(client_socket_fd < 0)
{
perror("Create Socket Failed:");
exit(1);
} // 綁定用戶端的socket和用戶端的socket位址結構 非必需
if(-1 == (bind(client_socket_fd, (struct sockaddr*)&client_addr, sizeof(client_addr))))
{
perror("Client Bind Failed:");
exit(1);
} // 聲明一個伺服器端的socket位址結構，并用伺服器那邊的IP位址及端口對其進行初始化，用于後面的連接配接
struct sockaddr_in server_addr;
bzero(&server_addr, sizeof(server_addr));
server_addr.sin_family = AF_INET;
if(inet_pton(AF_INET, "127.0.0.1", &server_addr.sin_addr) == 0)
{
perror("Server IP Address Error:");
exit(1);
} server_addr.sin_port = htons(SERVER_PORT);
socklen_t server_addr_length = sizeof(server_addr);
// 向伺服器發起連接配接，連接配接成功後client_socket_fd代表了用戶端和伺服器的一個socket連接配接
if(connect(client_socket_fd, (struct sockaddr*)&server_addr, server_addr_length) < 0)
{
perror("Can Not Connect To Server IP:");
exit(0);
} // 輸入檔案名 并放到緩沖區buffer中等待發送
char file_name[FILE_NAME_MAX_SIZE+1];
bzero(file_name, FILE_NAME_MAX_SIZE+1);
printf("Please Input File Name On Server:\t");
scanf("%s", file_name); char buffer[BUFFER_SIZE];
bzero(buffer, BUFFER_SIZE);
strncpy(buffer, file_name, strlen(file_name)>BUFFER_SIZE?BUFFER_SIZE:strlen(file_name));
// 向伺服器發送buffer中的資料
if(send(client_socket_fd, buffer, BUFFER_SIZE, 0) < 0)
{
perror("Send File Name Failed:");
exit(1);
} // 打開檔案，準備寫入
FILE *fp = fopen(file_name, "w");
if(NULL == fp)
{
printf("File:\t%s Can Not Open To Write\n", file_name);
exit(1);
}
// 從伺服器接收資料到buffer中
// 每接收一段資料，便将其寫入檔案中，循環直到檔案接收完并寫完為止
bzero(buffer, BUFFER_SIZE);
int length = 0;
while((length = recv(client_socket_fd, buffer, BUFFER_SIZE, 0)) > 0)
{
if(fwrite(buffer, sizeof(char), length, fp) < length)
{
printf("File:\t%s Write Failed\n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
// 接收成功後，關閉檔案，關閉socket
printf("Receive File:\t%s From Server IP Successful!\n", file_name);
fclose(fp);
close(client_socket_fd);
return 0;
} #include<netinet/in.h> // sockaddr_in
#include<sys/types.h> // socket
#include<sys/socket.h> // socket
#include<stdio.h> // printf
#include<stdlib.h> // exit
#include<string.h> // bzero
#include <unistd.h> #define SERVER_PORT 8000
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024
#define FILE_NAME_MAX_SIZE 512 int main()
{
struct sockaddr_in server_addr; //聲明并初始化一個服務端的socker位址結構
bzero(&server_addr,sizeof(server_addr)); //bzero() 會将記憶體塊（字元串）的前n個位元組清零
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htons(INADDR_ANY);
server_addr.sin_port = htons(SERVER_PORT); //建立socket,若成功，傳回socket描述符
int server_socket_fd=socket(PF_INET,SOCK_STREAM,0);
if(server_socket_fd <0)
{
perror("Create Socket Failed");
exit(1);
} int opt=1;
setsockopt(server_socket_fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)); //設定逾時 //綁定socker和socket位址結構
if(-1 == (bind(server_socket_fd, (struct sockaddr*)&server_addr, sizeof(server_addr))))
{
perror("Server Bind Failed:");
exit(1);
} // socket監聽
if(-1 == (listen(server_socket_fd, LENGTH_OF_LISTEN_QUEUE)))
{
perror("Server Listen Failed:");
exit(1);
} while (1)
{
//定義用戶端的socket位址結構
struct sockaddr_in client_addr;
socklen_t client_addr_length=sizeof(client_addr); //接受連接配接請求，傳回一個新的socket(描述符)，這個新socket用于同連接配接的用戶端通信
// accept函數會把連接配接到的用戶端資訊寫到client_addr中
int new_server_socket_fd = accept(server_socket_fd, (struct sockaddr*)&client_addr, &client_addr_length);
if(new_server_socket_fd<0)
{
perror("server accept failed:\r\n");
break;
}
//recv函數接收資料到緩沖buffer中
char buffer[BUFFER_SIZE];
bzero(buffer,BUFFER_SIZE);
if(recv(new_server_socket_fd, buffer, BUFFER_SIZE, 0) < 0)
{
perror("Server Recieve Data Failed:");
break;
} //然後從buffer緩沖區拷貝到file_name中
char file_name[FILE_NAME_MAX_SIZE+1];
bzero(file_name, FILE_NAME_MAX_SIZE+1);
strncpy(file_name, buffer, strlen(buffer)>FILE_NAME_MAX_SIZE?FILE_NAME_MAX_SIZE:strlen(buffer));
printf("%s\n", file_name); //打開檔案并讀取檔案資料
FILE *fp=fopen(file_name,"r"); if(NULL==fp)
{
printf("File:%s Not Found\n", file_name);
}
else
{
bzero(buffer, BUFFER_SIZE);
int length = 0;
// 每讀取一段資料，便将其發送給用戶端，循環直到檔案讀完為止
while((length = fread(buffer, sizeof(char), BUFFER_SIZE, fp)) > 0)
{
if(send(new_server_socket_fd, buffer, length, 0) < 0)
{
printf("Send File:%s Failed./n", file_name);
break;
}
bzero(buffer, BUFFER_SIZE);
}
// 關閉檔案
fclose(fp);
printf("File:%s Transfer Successful!\n", file_name);
} // 關閉與用戶端的連接配接
close(new_server_socket_fd);
}
// 關閉監聽用的socket
close(server_socket_fd);
return 0;
} ![開源按鍵元件Multi_Button的使用,含測試工程[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)