make file + client test with server IP

MakeFile

@@ -0,0 +1,17 @@
+
+CC = g++
+CFLAGS = -c
+
+all: tcpc
+
+tcpc: client.cpp
+	$(CC) $(CFLAGS) -o tcpc /client/tcpClient.cpp
+
+output: main.o
+	g++ main.o -o output
+
+main.o: /client.tcpClient.cpp
+	g++ -c main.cpp
+
+clean:
+	rm -rf *.dSYM tcpc output

client/tcpClient.cpp

@@ -0,0 +1,128 @@
+#include<bits/stdc++.h>
+// #include<studio.h>
+
+#include<sys/types.h>
+#include<sys/socket.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <arpa/inet.h>
+
+#include <sys/ioctl.h>
+#include <sys/time.h>
+
+
+#include<signal.h>
+// #include<studio.h>
+#include<stdlib.h>
+#include<netdb.h>
+
+#define SERVER_PORT 3000 
+
+#define MAX_LENGHT 4096 // max length of reading data
+
+#define SA struct sockaddr
+
+
+void error_and_kill(const char *fmt , ...) ;
+//handle errors
+
+void error_and_kill(const char *ch , ...){
+    int error_save ;
+    va_list ap;
+
+    //libary call to save the error no , now we need to save it now
+    error_save = errno ; 
+
+    va_start(ap , ch) ;
+    vfprintf(stdout , ch , ap);
+    fprintf(stdout , "\n");
+    fflush(stdout);
+
+    if ( error_save != 0  ){
+        fprintf(stdout , "  ( error = %d ) : %s\n" , error_save , 
+        strerror(error_save)) ;
+
+        fprintf(stdout , "\n") ; 
+        fflush(stdout) ; 
+    }
+
+    va_end(ap) ; 
+
+    exit(1) ; 
+
+}
+
+// this program will take IP address as input and fetch response from the server!
+
+// to see the results,
+// 1 . g++ -o ./client/tcpclient ./client/tcpClient.cpp ( compile programme from main directory)
+// ./client/tcpclient 3.217.101.204 ( second is IP address of the server)
+
+
+
+int main(int identity , char ** argc){
+    int  sockfd , n ; 
+    int  sendbytes ; 
+    struct sockaddr_in server_address ; 
+    char   sendline[MAX_LENGHT] ; 
+    char   receiveline[MAX_LENGHT] ; 
+
+    // check for passed IP address as argument
+
+    if(identity != 2){
+        error_and_kill("usage : %s < server_address>" , argc[0]) ; 
+    }
+
+    if(( sockfd  = socket(AF_INET , SOCK_STREAM , 0)   ) < 0){
+        error_and_kill("Error while creating socket");
+    }
+
+    bzero( &server_address , sizeof(server_address)  ) ; 
+    server_address.sin_family = AF_INET ; 
+    server_address.sin_port = htons(SERVER_PORT) ; 
+
+    if(inet_pton( AF_INET , argc[1] , &server_address.sin_addr ) <=0){
+         error_and_kill("inet_pton error %s" , argc[1]);
+    }
+
+    //connecting to server
+
+    if(connect(     sockfd , (SA *) &server_address , sizeof(server_address) ) < 0){
+         error_and_kill("falied to connect server") ;
+    }
+
+    //we are connnect. Prepare the message.
+    sprintf ( sendline , "GET / HTTP /1.1\r\n\r\n" ) ;
+    sendbytes = strlen(sendline) ; 
+
+
+    // Send the request -- making sure that you send it all.
+    // THis code  is bit fragile  , since it bails if only some of bytes are sent.
+
+    //Normally  , we would like to retry unless return value is -1.
+
+     if( write(sockfd , sendline , sendbytes ) != sendbytes ){
+         error_and_kill("write error");
+     }
+    memset(receiveline , 0 , MAX_LENGHT) ; 
+
+    // now reading the response from the server
+
+    while ( ( n = read(sockfd , receiveline , MAX_LENGHT-1 ) ) > 0)
+    {
+        /* code */
+        printf("%s" ,receiveline );
+    }
+
+    if(n < 0){
+        error_and_kill("read error") ; 
+    }
+
+    exit(0) ; //exites succesfully
+
+}
+
+