基于socket的聊天程序c语言(c语言的socket编程)
在linux下如何用c语言来写一个socket编程的聊天小程序
源码如下：
//chat_one.c
#include sys/types.h
#include sys/socket.h
#include netinet/in.h
#include stdio.h
#include string.h
#include errno.h
#include malloc.h
#include sys/select.h
int main( int argc, char **argv)
{
struct sockaddr_in chatone, chattwo;
char pmsg[1000];
char *buf;
int chatone_fd;
int ret,i;
int len, msg_len;
fd_set fdset;
if ( argc 2 ){
printf("please input ip address\n");
return -1;
}
printf("server address is %s\n", argv[1]);
chattwo.sin_family = AF_INET;
chattwo.sin_port = htons(60002);
inet_pton(AF_INET, argv[1], chattwo.sin_addr.s_addr);
chatone.sin_family = AF_INET;
chatone.sin_port = htons(60000);
chatone.sin_addr.s_addr = INADDR_ANY;
chatone_fd = socket(PF_INET, SOCK_DGRAM, 0);
if ( -1 == chatone_fd ){
printf("create socket failed %s\n", strerror(errno));
return -1;
}
ret = bind(chatone_fd, (struct sockaddr *)chatone, sizeof(chatone));
if ( -1 == ret){
printf("bind failed %s \n", strerror(errno));
return -1;
}
for(i=0; i1000;i++){
FD_ZERO( fdset );
FD_SET ( 0, fdset);
FD_SET( chatone_fd, fdset);
if ( -1 == select ( chatone_fd+1, fdset, NULL, NULL, NULL) ){
continue;
}
if ( FD_ISSET( chatone_fd, fdset)){
recvfrom( chatone_fd, pmsg, 999, 0, NULL, 0);
printf("receive %s\n", pmsg);
}
else{
memset( pmsg, 0, 1000);
fgets(pmsg, 999, stdin);
len = sizeof(chattwo);
sendto( chatone_fd, pmsg, 1000, 0,\
(struct sockaddr*) chattwo, len);
printf("send %s\n", pmsg);
}
}
printf("sent %d packets\n", i);
close(chatone_fd);
return 0;
}
//chat_two.c
#include sys/types.h
#include sys/socket.h
#include netinet/in.h
#include stdio.h
#include string.h
#include errno.h
#include malloc.h
#include sys/select.h
int main( int argc, char **argv)
{
struct sockaddr_in chatone, chattwo;
char pmsg[1000];
char *buf;
int chattwo_fd;
int ret,i;
int len, msg_len;
fd_set fdset;
if ( argc 2 ){
printf("please input ip address\n");
return -1;
}
printf("server address is %s\n", argv[1]);
chattwo.sin_family = AF_INET;
chattwo.sin_port = htons(60002);
chattwo.sin_addr.s_addr = INADDR_ANY;
chatone.sin_family = AF_INET;
chatone.sin_port = htons(60000);
inet_pton(AF_INET, argv[1], chatone.sin_addr.s_addr);
chattwo_fd = socket(PF_INET, SOCK_DGRAM, 0);
if ( -1 == chattwo_fd ){
printf("create socket failed %s\n", strerror(errno));
return -1;
}
ret = bind(chattwo_fd, (struct sockaddr *)chattwo, sizeof(chattwo));
if ( -1 == ret){
printf("bind failed %s \n", strerror(errno));
return -1;
}
for(i=0; i1000;i++){
FD_ZERO( fdset );
FD_SET ( 0, fdset);
FD_SET( chattwo_fd, fdset);
if ( -1 == select ( chattwo_fd+1, fdset, NULL, NULL, NULL) ){
continue;
}
if ( FD_ISSET( chattwo_fd, fdset)){
recvfrom( chattwo_fd, pmsg, 999, 0, NULL, 0);
printf("receive: %s\n", pmsg);
}
else{
memset( pmsg, 0, 1000);
fgets(pmsg, 999, stdin);
len = sizeof(chatone);
sendto( chattwo_fd, pmsg, 1000, 0,\
(struct sockaddr*) chatone, len);
printf("send %s\n", pmsg);
}
}
printf("sent %d packets\n", i);
close(chattwo_fd);
return 0;
}
编译好这个两个程序就可以进行简单的通信了。
C语言socket编程
这不是很简单，加个
在send前面加个
char password[20]="12345"
printf("please enter the password:");
scanf("%s",importpassword);
if(0==strcmp(password,importpassword))
{
连接。。。send();
}
else 退出。或者这里还可以写个循环输入也可
如果需要用户名就麻烦多了。不多说了，求采纳，有问必答
怎样用C语言做socket网络编程？
mfc只是对socket进行了一些封装，大部分人做网络编程都是用的原始的socket，比如如下接口都可以在c下进行调用\x0d\x0a 1.socket() \x0d\x0a 2.bind() \x0d\x0a 3.connect() \x0d\x0a 4.listen() \x0d\x0a 5.accept() \x0d\x0a 6.send() 和recv() \x0d\x0a 7.sendto() 和recvfrom() \x0d\x0a 8.close() 和shutdown() \x0d\x0a 9.getpeername() \x0d\x0a 10.gethostname() \x0d\x0a这些接口是在Winsock2.h中定义的不是在mfc中定义的，你只需要包含Winsock2.h头文件和Ws2_32.lib库就可以了。
如何用C语言编写一个简单的聊天室程序
这样：
#include stdlib.h
#include stdio.h
#include errno.h
#include string.h
#include unistd.h
#include netdb.h
#include sys/socket.h
#include netinet/in.h
#include sys/types.h
#include arpa/inet.h
#include pthread.h
#define MAXLINE 100;
void *threadsend(void *vargp);
void *threadrecv(void *vargp);
int main()
{
int *clientfdp;
clientfdp = (int *)malloc(sizeof(int));
*clientfdp = socket(AF_INET,SOCK_STREAM,0);
struct sockaddr_in serveraddr;
struct hostent *hp;
bzero((char *)serveraddr,sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_port = htons(15636);
serveraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
if(connect(*clientfdp,(struct sockaddr *)serveraddr,sizeof(serveraddr)) 0){
? ? ? printf("connect error\n");
? ? ? exit(1);
}
pthread_t tid1,tid2;
printf("connected\n");
while(1){
pthread_create(tid1,NULL,threadsend,clientfdp);
pthread_create(tid2,NULL,threadrecv,clientfdp);
}
return EXIT_SUCCESS;
}
void *threadsend(void * vargp)
{
//pthread_t tid2;
int connfd = *((int *)vargp);
int idata;
char temp[100];
while(1){
//printf("me: \n ");
fgets(temp,100,stdin);
send(connfd,temp,100,0);
printf("? ? ? ? ? client send OK\n");
}
printf("client send\n");
return NULL;
}
void *threadrecv(void *vargp)
{
char temp[100];
int connfd = *((int *)vargp);
while(1){
int idata = 0;
idata = recv(connfd,temp,100,0);
if(idata 0){
printf("server :\n%s\n",temp);
}
}
return NULL;
}
扩展资料：
注意事项
linux下编译多线程代码时，shell提示找不到 pthread_create函数，原因是 pthread.h不是linux系统默认加载的库文件，应该使用类似如下gcc命令进行编译：
gcc echoserver.c -lpthread -o echoserver
只要注意 -lpthread参数就可以了。