基於TCP協議 實現簡單的多執行緒多程序伺服器

相比於udp來說，由於udp是不需要連線的，可直接通訊。所以基於udp協議的伺服器，並不需要考慮到多客戶端同時訪問伺服器時接受資料的問題。而tcp協議是需要連線的，在乙個客戶端連線上伺服器後，這個時候伺服器就開始於客戶端進行訊息的傳送與接收。那麼其它的客戶端在這個時候是無法與伺服器連線的。這個時候就需要考慮多執行緒或者多程序的伺服器來應對這個問題了。

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
int startup(char* ip, char* port)
int sock = socket(af_inet, sock_stream, 0);
if(sock < 0) 
struct sockaddr_in local;
bzero(&local, sizeof(local));
local.sin_family = af_inet;
local.sin_addr.s_addr = inet_addr(ip);
local.sin_port = htons(atoi(port));
if(bind(sock, (struct sockaddr*)&local, sizeof(local)) < 0) 
if(listen(sock, 5) < 0) 
return sock;
}int main(int argc, char* argv)
int listen_sock = startup(argv[1], argv[2]);
char buf[64];
struct sockaddr_in client;
socklen_t len = sizeof(client);
while(1) 
while(1) 
}} else 
} else 
}  return
0;}

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
int main(int argc, char* argv)
int sock = socket(af_inet, sock_stream, 0);
if(sock < 0) 
struct sockaddr_in server;
bzero(&server, sizeof(server));
socklen_t len = sizeof(server);
server.sin_family = af_inet;
server.sin_port = htons(atoi(argv[2]));
server.sin_addr.s_addr = inet_addr(argv[1]);
if(connect(sock, (struct sockaddr*)&server, len) < 0) 
char buf[64];
while(1) 
}}  close(sock);
return
0;}

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
typedef
struct argarg;
int startup(char* ip, char* port)
int sock = socket(af_inet, sock_stream, 0);
if(sock < 0) 
struct sockaddr_in local;
socklen_t len = sizeof(local);
bzero(&local, len);
local.sin_addr.s_addr = inet_addr(ip);
local.sin_port = htons(atoi(port));
local.sin_family = af_inet;
if(bind(sock, (struct sockaddr*)&local, len) < 0) 
if(listen(sock, 5) < 0) 
return sock;
}void service(char* ip, int port, int sock)
else
if(s == 0)  else 
}}void* server_client(void* ptr)
int main(int argc, char* argv)
int listen_sock = startup(argv[1], argv[2]);
struct sockaddr_in client;
socklen_t len = sizeof(client);
while(1) 
arg* arg = (arg*)malloc(sizeof(arg));
arg->addr = client;
arg->sock = sock;
pthread_t tid;
pthread_create(&tid, null, server_client, (void*)arg);
pthread_detach(tid);
}  return
0;}

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
int main(int argc, char* argv)
int sock = socket(af_inet, sock_stream, 0);
if(sock < 0) 
struct sockaddr_in server;
bzero(&server, sizeof(server));
socklen_t len = sizeof(server);
server.sin_family = af_inet;
server.sin_port = htons(atoi(argv[2]));
server.sin_addr.s_addr = inet_addr(argv[1]);
if(connect(sock, (struct sockaddr*)&server, len) < 0) 
char buf[64];
while(1) 
}}  close(sock);
return
0;}

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