In this code, send function doesn't block but doesn't send either. If I call shutdown , then it is forced to send.
How do I make this code send a small message within a second or so?
This code is suppose to respond to web browser GET request. (User types localhost:27015) It is just a test, I do not need it for work or a bigger project.
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <stdio.h>
#pragma comment(lib, "Ws2_32.lib")
int main(int argc, wchar_t* argv[]) {
WSADATA wsaData;
int iResult = 0;
SOCKET ListenSocket = INVALID_SOCKET;
sockaddr_in service;
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
ListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
service.sin_family = AF_INET;
service.sin_addr.s_addr = inet_addr("127.0.0.1");
service.sin_port = htons(27015);
iResult = bind(ListenSocket, (SOCKADDR *)& service, sizeof(service));
listen(ListenSocket, SOMAXCONN);
auto AcceptSocket = accept(ListenSocket, NULL, NULL);
char getbuf[400];
recv(AcceptSocket, getbuf, 400, NULL);
getbuf[399] = '\0';
printf("%s",getbuf);
char str[] = "HTTP/1.1 200 OK\r\n"
"Date: Sun, 19 May 2018 08 : 56 : 53 GMT\r\n"
"Server : Apache / 2.2.14 (Win32)\r\n"
"Last - Modified : Sat, 20 Nov 2004 07 : 16 : 26 GMT\r\n"
"ETag : \"10000000565a5-2c-3e94b66c2e680\" \r\n"
"Accept - Ranges : bytes\r\n"
"Content - Length : 44\r\n"
"Connection : close\r\n"
"Content - Type : text / html\r\n"
"X - Pad : avoid browser bug\r\n\r\n"
"<html><body><h1>It works!</h1> </body> </html>\r\n\0";
char *sendbuf = (char*)str;
iResult = send(AcceptSocket, sendbuf, (int)strlen(str), 0);
//shutdown(AcceptSocket, SD_BOTH); //forces to send
while (1);
return 0;
}
char str[] =
"HTTP/1.1 200 OK\r\n"
"Date: Sun, 19 May 2018 08:56:53 GMT\r\n"
"Server: Apache/2.2.14 (Win32)\r\n"
"Last-Modified: Sat, 20 Nov 2004 07:16:26 GMT\r\n"
"ETag: \"10000000565a5-2c-3e94b66c2e680\"\r\n"
"Accept-Ranges: bytes\r\n"
"Content-Length: 46\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"X-Pad: avoid browser bug\r\n\r\n"
"<html><body><h1>It works!</h1></body></html>\r\n";
The browser isn't a person, it doesn't know what the hell is Content - Type :, it doesn't recognize 08 : 56 : 53 as a valid time, there is no MIME type called text / html. Stop putting spaces where there shouldn't be any, the browser doesn't have a brain, it can't guess.
Also you are explicitly telling the connection will close after the data is sent, with the header Connection: close, but you are not doing that. If you intent to keep the connection alive, then use Connection: keep-alive.
Moreover, your data is not 44 bytes in length.