client.c

使用socket 通訊協定透過PROC存取 oracle database

/* client.c */

#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>

int port = 8000;

int main(int argc, char *argv[])

{

  struct sockaddr_in    pin;

  int   mysock,i;

  char  buf[8192];

  char  *str="A001 電視機 20000.00 ";
  char  buf1[100];

  printf("argc:%d\n",argc);

  if (argc < 2) {

    printf("使用方法: client 字串\n");

    printf("使用預設字串\n");

  } else {

    str=argv[1];
    for(i=1;i<argc;i++){

      printf("argv[%d]:%s\n",i,argv[i]);
    }
    // printf("str:%s\n",str);
  }

  /* 建立server IPv4位址 */

  bzero(&pin, sizeof(pin));
  //memset(&broadcastAddr, 0, sizeof(broadcastAddr));

  pin.sin_family = AF_INET;

  pin.sin_addr.s_addr = inet_addr("192.168.1.138");

  pin.sin_port = htons(port);

  /* 建立socket */

  mysock = socket(AF_INET, SOCK_STREAM, 0);

  if (mysock == -1) {

    perror("call to socket");

    //exit(1);

  }

  /* 連結server */

  if (connect(mysock, (void *)&pin, sizeof(pin)) == -1) {

    perror("call to connect");

    //exit(1);

  }

  /* 將str字串傳給 server */

  sprintf(buf1,"%s %s",argv[1],argv[2]);
  printf("Sending message %s to server ...\n", buf1);

  //if (send(mysock, str, strlen(str), 0) == -1) {
  if (send(mysock, buf1, strlen(buf1), 0) == -1) {
    perror("Error in send\n");

    //exit(1);

  }

  /* 接收 server 回傳的訊息 */

  if (recv(mysock, buf, 8192, 0) == -1) {

    perror("Error in receiving\n");

    //exit(1);

  }

  printf("\nResponse from server: %s\n", buf);

  /* 關閉與server的連線 */

  close(mysock);

  return 0;

}