Home/ Questions/Q 8201111
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-07T06:41:46+00:00

im getting issues with the folowing code: #include <netdb.h> #include socket.h #define INVALID_SOCKET -1

  • 0

im getting issues with the folowing code: 

#include <netdb.h>
#include "socket.h"

#define INVALID_SOCKET -1
#define SOCKET_ERROR   -1

int SenderAddrSize = sizeof(sockaddr);
sockaddr CSocket::SenderAddr;
bool CSocket::tcpconnect(char *address, int port, int mode)
{
    sockaddr_in addr;
    hostent hostEntry;
    if((sockid = socket(AF_INET,SOCK_STREAM, 0)) == SOCKET_ERROR)
        return false;
    if((hostEntry = gethostbyname(address)) == NULL)
    {
        closesocket(sockid);
        return false;
    }
    addr.sin_family = AF_INET;
    addr.sin_addr = *((LPIN_ADDR)*hostEntry->h_addr_list);
    addr.sin_port = htons((u_short)port);
    if(mode ==2)setsync(1);
    if(connect(sockid, (LPSOCKADDR)&addr, sizeof(sockaddr)) == SOCKET_ERROR)
    {
        if(WSAGetLastError() != WSAEWOULDBLOCK)
        {
            closesocket(sockid);
            return false;
        }
    }
    if(mode ==1)setsync(1);
    return true;
}

I get the following output:

/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘bool CSocket::tcpconnect(char*, int, int)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|15|error: no match for ‘operator=’ in ‘hostEntry = gethostbyname(((const char*)address))’|
/home/nick/.projects/39dll-4-linux/socket.cpp|15|note: candidate is:|
/usr/include/netdb.h|101|note: hostent& hostent::operator=(const hostent&)|
/usr/include/netdb.h|101|note:   no known conversion for argument 1 from ‘hostent*’ to ‘const hostent&’|
/home/nick/.projects/39dll-4-linux/socket.cpp|17|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|21|error: ‘LPIN_ADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|21|error: base operand of ‘->’ has non-pointer type ‘hostent’|
/home/nick/.projects/39dll-4-linux/socket.cpp|24|error: ‘LPSOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|26|error: ‘WSAGetLastError’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|26|error: ‘WSAEWOULDBLOCK’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|28|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘bool CSocket::tcplisten(int, int, int)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|40|error: ‘struct sockaddr’ has no member named ‘sin_family’|
/home/nick/.projects/39dll-4-linux/socket.cpp|41|error: ‘struct sockaddr’ has no member named ‘sin_addr’|
/home/nick/.projects/39dll-4-linux/socket.cpp|42|error: ‘struct sockaddr’ has no member named ‘sin_port’|
/home/nick/.projects/39dll-4-linux/socket.cpp|44|error: ‘LPSOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|46|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|51|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|57|error: expected constructor, destructor, or type conversion before ‘(’ token|
/home/nick/.projects/39dll-4-linux/socket.cpp||In destructor ‘CSocket::~CSocket()’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|75|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘CSocket* CSocket::tcpaccept(int)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|80|error: ‘SOCKET’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|80|error: expected ‘;’ before ‘sock2’|
/home/nick/.projects/39dll-4-linux/socket.cpp|81|error: ‘sock2’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|81|error: ‘SOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|81|error: expected primary-expression before ‘)’ token|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘char* CSocket::tcpip()’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|93|error: ‘SOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|93|error: expected primary-expression before ‘)’ token|
/home/nick/.projects/39dll-4-linux/socket.cpp|94|error: ‘struct sockaddr’ has no member named ‘sin_addr’|
/home/nick/.projects/39dll-4-linux/socket.cpp|94|error: ‘inet_ntoa’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘void CSocket::setnagle(bool)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|100|error: ‘TCP_NODELAY’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘bool CSocket::tcpconnected()’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|108|error: ‘WSAGetLastError’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|108|error: ‘WSAEWOULDBLOCK’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘int CSocket::setsync(int)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|116|error: ‘FIONBIO’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|116|error: ‘ioctlsocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘bool CSocket::udpconnect(int, int)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|121|error: ‘SOCKADDR_IN’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|121|error: expected ‘;’ before ‘addr’|
/home/nick/.projects/39dll-4-linux/socket.cpp|124|error: ‘addr’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|128|error: ‘SOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|128|error: expected primary-expression before ‘)’ token|
/home/nick/.projects/39dll-4-linux/socket.cpp|130|error: ‘closesocket’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘int CSocket::sendmessage(char*, int, CBuffer*)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|142|error: ‘SOCKADDR_IN’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|142|error: expected ‘;’ before ‘addr’|
/home/nick/.projects/39dll-4-linux/socket.cpp|145|error: ‘min’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|145|note: suggested alternative:|
/usr/include/c++/4.6/bits/stl_algobase.h|233|note:   ‘std::min’|
/home/nick/.projects/39dll-4-linux/socket.cpp|146|error: ‘addr’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|148|error: ‘inet_addr’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|149|error: ‘SOCKADDR’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp|149|error: expected primary-expression before ‘)’ token|
/home/nick/.projects/39dll-4-linux/socket.cpp|168|error: ‘WSAGetLastError’ was not declared in this scope|
/home/nick/.projects/39dll-4-linux/socket.cpp||In member function ‘int CSocket::receivemessage(int, CBuffer*)’:|
/home/nick/.projects/39dll-4-linux/socket.cpp|198|error: ‘SOCKADDR’ was not declared in this scope|
||More errors follow but not being shown.|
||Edit the max errors limit in compiler options...|
||=== Build finished: 50 errors, 0 warnings ===|

I’m totally lost at this point. Ive used Google extensively and solved several other problems myself, but I’m stuck at this. can anyone help me with this issue?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Your variable hostEntry is of type hostent but the function gethostbyname only returns a pointer to a structure. Your variable should have a pointer type, hostent*.

    • 0