IO分离的其他说明(shutdown使用)

ch16/client.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+#define BUF_SIZE 1024
+
+int main(int argc, char * argv[]){
+	int sock;
+	FILE *readfp;
+	FILE *writefp;
+	struct sockaddr_in serv_adr;
+	socklen_t clnt_adr_sz;
+	char buf[BUF_SIZE];
+
+	sock = socket(PF_INET,SOCK_STREAM,0);
+
+	memset(&serv_adr,0,sizeof(serv_adr));
+	serv_adr.sin_family = AF_INET;
+	serv_adr.sin_addr.s_addr = inet_addr(argv[1]);
+	serv_adr.sin_port = htons(atoi(argv[2]));
+
+	connect(sock,(struct sockaddr *)&serv_adr,sizeof(serv_adr));
+
+	readfp = fdopen(sock,"r");
+	writefp = fdopen(sock,"w");
+
+	while(1){
+	    if(fgets(buf,sizeof(buf),readfp) == NULL){
+		break;
+	    }
+
+	    fputs(buf,stdout);
+    	    fflush(stdout);
+	}
+
+	fputs("from client: thank you\n",writefp);
+	fflush(writefp);
+	fclose(readfp);
+	fclose(writefp);
+
+	return 0;
+}

ch16/server.c

@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#define BUF_SIZE 1024
+
+int main(int argc, char * argv[]){
+	int serv_sock,clnt_sock;
+	FILE *readfp;
+	FILE *writefp;
+	struct sockaddr_in serv_adr,clnt_adr;
+	socklen_t clnt_adr_sz;
+	char buf[BUF_SIZE];
+
+	serv_sock = socket(PF_INET,SOCK_STREAM,0);
+
+	memset(&serv_adr,0,sizeof(serv_adr));
+	serv_adr.sin_family = AF_INET;
+	serv_adr.sin_addr.s_addr = htonl(INADDR_ANY);
+	serv_adr.sin_port = htons(atoi(argv[1]));
+
+	bind(serv_sock,(struct sockaddr *)&serv_adr,sizeof(serv_adr));
+
+	listen(serv_sock,5);
+
+	clnt_adr_sz = sizeof(clnt_adr);
+
+	clnt_sock = accept(serv_sock,(struct sockaddr *)&clnt_adr,&clnt_adr_sz);
+
+	readfp = fdopen(clnt_sock,"r");
+	writefp = fdopen(dup(clnt_sock),"w");
+
+	fputs("from server: Hi~ client? \n",writefp);
+	fputs("I love all the world! \n",writefp);
+	fflush(writefp);
+
+	shutdown(fileno(writefp),SHUT_WR);
+
+	fclose(writefp);
+	fgets(buf,sizeof(buf),readfp);
+	fputs(buf,stdout);
+
+	fclose(readfp);
+
+	return 0;
+}