send() function is never called in server C - c

Question

I have a server program here that checks the input sent from the client and returns a message back to the client wether the password is right or wrong .
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "Practical.h"
#include <unistd.h>
#include <sys/stat.h>
#define BUFSIZE 200
int main(int argc, char* argv[])
{
int numBytes = 0;
int MAXPENDING = 1;
char recvbuffer[BUFSIZE], sendbuffer[BUFSIZE];
char inp_user[BUFSIZE];
char inp_pass[BUFSIZE];
char pass[BUFSIZE] = "pass";
char user[BUFSIZE] = "admin";
int attemptsLeft = 3;
if (argc != 2)
DieWithUserMessage("Parameter(s)", "<Server Port>");
in_port_t servPort = atoi(argv[1]);
int servSock;
if ((servSock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
DieWithSystemMessage("socket() failed");
struct sockaddr_in servAddr;
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = AF_INET;
servAddr.sin_addr.s_addr = htonl(INADDR_ANY);
servAddr.sin_port = htons(servPort);
if (bind(servSock, (struct sockaddr*) &servAddr, sizeof(servAddr)) < 0)
DieWithSystemMessage("bind() failed");
//accept incoming connection requests to the server socket
//MAXPENDING is the maximum number of connections
//that should be queued for this socket
if (listen(servSock, MAXPENDING) < 0)
DieWithSystemMessage("listen() failed");
for (;;)
{
//declare client address structure
struct sockaddr_in clntAddr;
socklen_t clntAddrLen = sizeof(clntAddr);
//return new file descriptor referring
//to the client socket , all read/write operations will be
//performed on this socket
int clntSock = accept(servSock, (struct sockaddr *) &clntAddr, &clntAddrLen);
//check if the client socket has not been created
if (clntSock < 0)
DieWithSystemMessage("accept() failed");
//retrieve the data sent by the client
while ((numBytes = recv(clntSock, recvbuffer, (BUFSIZE-1), 0)) > 0) {
recvbuffer[numBytes] = '\0';
fputs(recvbuffer, stdout);
// if(strstr(recvbuffer, "\r\n\r\n") > 0)
// break;
}
//check if data has not been received from the client
if (numBytes < 0)
DieWithSystemMessage("recv() failed");
//read username and password into the server's buffers
sscanf(recvbuffer, "%s %s", inp_user, inp_pass);
//check if the entered username and pasword is correct
if( (strcmp(user, inp_user) == 0)
&&
(strcmp(pass, inp_pass) == 0)
)
{
snprintf(sendbuffer, sizeof(sendbuffer), "%s", "PROCEED\r\n");
}
else //the credentials entered were incorrect
{
attemptsLeft--;
//check if user has no attempts left
if(attemptsLeft == 0) {
snprintf(sendbuffer, sizeof(sendbuffer), "%s", "DENIED\r\n" );
} else {
snprintf(sendbuffer, sizeof(sendbuffer), "%s", "NONO\r\n");
// "You have %d attempt(s) left", attemptsLeft);
}
}
printf("The send message contains %s \n\n", sendbuffer);
printf("brefore sending\n");
ssize_t numBytesSent = send(clntSock, sendbuffer, strlen(sendbuffer), 0);
printf("after sending\n");
if (numBytesSent < 0)
DieWithSystemMessage("send() failed");
printf("NOBYTES: %d", numBytes);
close(clntSock);
}
}
The message contains prints successfully meaning a message is created for the user however the send() function is never called and the client never receives this message. Anyone know why this would happen?