This is my c code. It is receiving the data send by the client and sending hello to the client.
#include <stdio.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include<errno.h> #include<arpa/inet.h> #define PORT 6865 #define BUF 1024 int main(int argc, char *argv[]) { struct sockaddr_in host, remote; int host_fd, remote_fd; int size = sizeof(struct sockaddr);; int read_t; char send_t[]="hello"; char data[BUF]; host.sin_family = AF_INET; host.sin_addr.s_addr = htonl(INADDR_ANY); host.sin_port = htons(PORT); memset(&host.sin_zero, 0, sizeof(host.sin_zero)); host_fd = socket(AF_INET, SOCK_STREAM, 0); if(host_fd == -1) { printf("socket error %d\n", host_fd); return 1; } if(bind(host_fd, (struct sockaddr *)&host, size)) { perror("bind error is\n"); printf("errorno is %d\n",errno); return 1; } if(listen(host_fd, 5)) { printf("listen error"); return 1; } printf("Server setup, waiting for connection...\n"); remote_fd = accept(host_fd, (struct sockaddr *)&remote, &size); printf("connection made\n"); read_t = recv(remote_fd,data,sizeof(data),0); data[read_t]='\0'; printf("read = %d, data = %s\n", read_t, data); if(send(remote_fd,send_t,sizeof(send_t),0)==-1) { printf("error in sending back\n"); return 1; } //memset(data[BUF],0,sizeof(data)); //read_t = recv(remote_fd,data,sizeof(data),0); //data[read_t]='\0'; //printf("read = %d, received_data = %s \n", sizeof(data), data); shutdown(remote_fd, SHUT_RDWR); close(remote_fd); return 0; } This is the client java code.
package pack.client; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.net.Socket; import java.net.UnknownHostException; public class Client { public static void main(String[] args) throws UnknownHostException, IOException { char[] data = new char[10]; OutputStreamWriter outs = null; InputStreamReader ins= null; Socket s = new Socket("10.9.79.80", 6865); outs = new OutputStreamWriter(s.getOutputStream()); outs.append("Socket communication"); ins= new InputStreamReader(s.getInputStream()); int da = ins.read(data, 0, 9); System.out.print(data); outs.close(); ins.close(); s.close(); } } When the client is making connection with server, I can see the connection made message on the terminal but the server is not receiving the data.
