socket檔案傳輸

//伺服器**
/////本檔案是伺服器的**
#include // for sockaddr_in
#include // for socket
#include // for socket
#include // for printf
#include // for exit
#include // for bzero
#include //for time_t and time
#define hello_world_server_port 7754
#define length_of_listen_queue 20
#define buffer_size 1024
int main(int argc, char **argv)
//把socket和socket位址結構聯絡起來
if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
//server_socket用於監聽
if ( listen(server_socket, length_of_listen_queue) )
while (1) //伺服器端要一直執行
char buffer[buffer_size];
bzero(buffer, buffer_size);
strcpy(buffer,"hello,world! 從伺服器來！");
strcat(buffer,"\n"); //c語言字串連線
send(new_server_socket,buffer,buffer_size,0);
bzero(buffer,buffer_size);
//接收客戶端傳送來的資訊到buffer中
length = recv(new_server_socket,buffer,buffer_size,0);
if (length < 0)
printf("\n%s",buffer);
if((stream = fopen("data1","r"))==null)
else
printf("the file 'filename' was opened! \n");
bzero(buffer,buffer_size);
int lengsize = 0;
while((lengsize = fread(buffer,1,1024,stream)) > 0)
bzero(buffer, buffer_size);
}if(fclose(stream))
printf("the file 'data' was not closed! \n");
exit(1); 
//關閉與客戶端的連線
close(new_server_socket); 
}//關閉監聽用的socket
close(server_socket);
return 0;
}

//客戶端**
/////本檔案是客戶機的**
#include // for sockaddr_in
#include // for socket
#include // for socket
#include // for printf
#include // for exit
#include // for bzero
#include //for time_t and time
#include 
#define hello_world_server_port 7754
#define buffer_size 1024
int main(int argc, char **argv)
//time_t now;
file *stream;
//設定乙個socket位址結構client_addr,代表客戶機internet位址, 埠
struct sockaddr_in client_addr;
bzero(&client_addr,sizeof(client_addr)); //把一段記憶體區的內容全部設定為0
client_addr.sin_family = af_inet; //internet協議族
client_addr.sin_addr.s_addr = htons(inaddr_any);//inaddr_any表示自動獲取本機位址
client_addr.sin_port = htons(0); //0表示讓系統自動分配乙個空閒埠
//建立用於internet的流協議(tcp)socket,用client_socket代表客戶機socket
int client_socket = socket(af_inet,sock_stream,0);
if( client_socket < 0)
//把客戶機的socket和客戶機的socket位址結構聯絡起來
if( bind(client_socket,(struct sockaddr*)&client_addr,sizeof(client_addr)))
//設定乙個socket位址結構server_addr,代表伺服器的internet位址, 埠
struct sockaddr_in server_addr;
bzero(&server_addr,sizeof(server_addr));
server_addr.sin_family = af_inet;
if(inet_aton(argv[1],&server_addr.sin_addr) == 0) //伺服器的ip位址來自程式的引數
server_addr.sin_port = htons(hello_world_server_port);
socklen_t server_addr_length = sizeof(server_addr);
//向伺服器發起連線,連線成功後client_socket代表了客戶機和伺服器的乙個socket連線
if(connect(client_socket,(struct sockaddr*)&server_addr, server_addr_length) < 0)
char buffer[buffer_size];
bzero(buffer,buffer_size);
//從伺服器接收資料到buffer中
int length = recv(client_socket,buffer,buffer_size,0);
if(length < 0)
printf("\n%s\n",buffer);
bzero(buffer,buffer_size);
bzero(buffer,buffer_size);
strcpy(buffer,"hello, world! from client\n");
//向伺服器傳送buffer中的資料
send(client_socket,buffer,buffer_size,0);
if((stream = fopen("data","w+t"))==null)
else
bzero(buffer,buffer_size);
length = 0;
while( length = recv(client_socket,buffer,buffer_size,0))
int write_length = fwrite(buffer,sizeof(char),length,stream);
if (write_lengthbzero(buffer,buffer_size); 
}printf("recieve file from server[%s] finished\n", argv[1]);
//關閉 檔案
fclose(stream);
//關閉socket
close(client_socket);
return 0;
}

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