php和c通过socket通信

/*server.c*/

#include

#include

#include

#include

#include

#include

#include

#include

#include

main(){

int sock;

struct sockaddr_in server,client;

int recvd,snd;

int structlength;

char * server_ip = "128.168.10.1";/*server ip address*/

int port = 8888;

char recvbuf[2000],sendbuf[2000];

char str1[]="I have received:\n";

memset((char *)&server,0,sizeof(server));

server.sin_family = AF_INET;

server.sin_addr.s_addr = inet_addr(server_ip);

server.sin_port = htons(port);

memset((char *)&client,0,sizeof(client));

client.sin_family = AF_INET;

client.sin_addr.s_addr = htonl(INADDR_ANY);

client.sin_port = htons(port);

if((sock = socket (AF_INET,SOCK_DGRAM,0))

printf("socket create error!\n");

exit(1);

}

structlength = sizeof(server);

if( bind(sock,(struct sockaddr *) &server,structlength)

printf("socket bind error!\n");

perror("bind");

exit(1);

}

while(1){

structlength = sizeof(client);

printf("waiting.......\n");

recvd = recvfrom(sock,recvbuf,sizeof(recvbuf),0,

(struct sockaddr *) & client,&structlength);

if(recvd

perror("recvfrom");

exit(EXIT_FAILURE);

}

else{

printf("received:%s\n",recvbuf);

memset(sendbuf,0,strlen(sendbuf));

memcpy(sendbuf,str1,strlen(str1));

snd = sendto(sock,sendbuf,strlen(str1),0,

(struct sockaddr *) &client,structlength);

if(snd

perror("sendto");

exit(1);

}

printf("sendok!\n");

}

}

close(sock);

}

/*

gcc -o server server.c生成server程序c socket udp，在服务器端运行./server

*/

/*client.php*/

$server_ip="128.168.10.1";

$port = 8888;

$sock=@socket_create(AF_INET,SOCK_DGRAM,0);

if(!$sock){

echo "socket create failure";

}

if($buf=="")

$buf="hello,how are you!\n";

if(!@socket_sendto($sock,$buf,strlen($buf),0,"128.168.10.1",8888)){

echo "send error\n";

socket_close($sock);

exit();

}

$buf="";

$msg="";

if(!@socket_recvfrom($sock,$msg,256,0,&$server_ip,&$port)){

echo "recvieve error!";

socket_close($sock);

exit();

}

echo trim($msg)."\n";

socket_close($sock);

/*这个过程很简单c socket udp，就是客户端提交一个信息，服务端接收，

并返回给客户端一个"接收到"的确定信息。

*/

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