c++ - Getting 400 Bad Request when trying to connect to website via winsock socket -

i made socket i've been adding on week , i've come across problem. set port on local 127.0.0.1 ip address allow me connect own computer , when recieve response computer says "400 bad request. request badly formed.". think has http header information send via send(); function. sendbuf contains header information sent. here's code:

#include <windows.h> #include <winsock2.h> #include <conio.h> #include <stdio.h> #include <iostream> using namespace std; #define sck_version2 0x0202 #define default_buflen 2000 #define default_port 27015  namespace globals{     extern string input = ""; } using namespace globals;  void username() {     {             printf("username: \t");             getline(cin, input);             if ( input == "user name" ) {                     break;              }         } while(true);  }  void password() {     {         printf("password: \t");     getline(cin, input);     if ( input == "password" ) {         break;     }     username();     } while(true); }  int whole() {      username();     password();      //----------------------     // declare , initialize variables.     wsadata wsadata;     int iresult;      socket connectsocket = invalid_socket;     struct sockaddr_in clientservice;      char name[500] = "";     char ipaddress[500] = "";     char sport[500] = "";      sockaddr_in sname;     int snamesize =  sizeof(sname);      char *sendbuf = "get /tr http/1.1 \nhost: net.tutsplus.com \nuser-agent: mozilla/5.0 (windows; u; windows nt 6.1; en-us; rv:1.9.1.5) gecko/20091102 firefox/3.5.5 (.net clr 3.5.30729) \naccept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 \naccept-language: en-us,en;q=0.5 \naccept-encoding: gzip,deflate \naccept-charset: iso-8859-1,utf-8;q=0.7,*;q=0.7 \nkeep-alive: 300 \nconnection: keep-alive \ncookie: phpsessid=r2t5uvjq435r4q7ib3vtdjq120 \npragma: no-cache \ncache-control: no-cache";     char recvbuf[default_buflen];     int recvbuflen = default_buflen;                                    //208.109.181.178     int wsaerror = wsagetlasterror();     //system("color 04");     //----------------------     // initialize winsock     iresult = wsastartup(makeword(2,2), &wsadata);     if (iresult != no_error) {       printf("wsastartup failed: %d\n", iresult);       return 1;     }      //----------------------     // create socket connecting server     connectsocket = socket(af_inet, sock_stream, ipproto_tcp);     if (connectsocket == invalid_socket) {         printf("error @ socket(): %i\n", wsagetlasterror() );         wsacleanup();         return 1;     }      //----------------------     // sockaddr_in structure specifies address family,     // ip address, , port of server connected to.      printf("ip address: \n");     cin >> ipaddress;     printf("port: \n");     cin >> sport;     u_short port = strtoul(sport, null, 0);     clientservice.sin_family = af_inet;     clientservice.sin_addr.s_addr = inet_addr(ipaddress);                            //74.125.196.191     clientservice.sin_port = htons(port);      //----------------------     // connect server.     iresult = connect( connectsocket, (sockaddr*) &clientservice, sizeof(clientservice) );     if ( iresult == socket_error) {         closesocket (connectsocket);         printf("unable connect server: %i\n", wsagetlasterror());         wsacleanup();         return 1;     }      //----------------------     //get local host name     iresult = gethostname(name, sizeof(name));     if (iresult == no_error) {         printf("host name: %s\n", name);     }     else if (iresult == socket_error) {         printf("could not resolve host name: %i", wsagetlasterror());     }      //------------------------     //get peer name     iresult = getpeername(connectsocket, (struct sockaddr*)&sname, &snamesize);     if (iresult == no_error)         printf("peer name: %s\n", inet_ntoa(sname.sin_addr));     else if (iresult == socket_error)         printf("could not peer name: %i\n", wsagetlasterror());      //-------------------------     // send initial buffer     iresult = send( connectsocket, sendbuf, (int)strlen(sendbuf), 0 );     if (iresult == socket_error) {         printf("send failed: %d\n", wsagetlasterror());         closesocket(connectsocket);         wsacleanup();         return 1;     }     else         printf("bytes sent: %i\n", iresult);      //-----------------------------     // shutdown connection since no more data sent     iresult = shutdown(connectsocket, sd_send);     if (iresult == socket_error) {         printf("shutdown failed: %d\n", wsagetlasterror());         closesocket(connectsocket);         wsacleanup();         return 1;     }      // receive until peer closes connection     {          iresult = recv(connectsocket, recvbuf, recvbuflen, 0);         if ( iresult > 0 ) {             printf("bytes received: %d\n", iresult); //printf("bytes received: %d\n", iresult);             printf("from server: %s\n", recvbuf);         }         else if ( iresult == 0 )             printf("connection closed\n");         else if (wsaerror == wsaetimedout)             printf("recv failed: wsaetimedout\n");         printf("do want disconnect? (y/n) \n");         cin >> input;         if ( input == "y"||"y" ) {             break;         }         else if ( input == "n"||"n" ) {             break;         }     } while( iresult > 0 );      // cleanup     closesocket(connectsocket);     wsacleanup();     system("pause");     return 0; }  int main() {     {         whole();     } while( input != "n"||"n" );  } 

i figured out, in sendbuf putting invalid host name. xd