Client does not receive message form server - c

Question

I'm sending a message (a greeting) from a server to a client. The server sends the data but the client is not receiving it and then the server jumps to a read because client have to reply with an input of the user. Can you tell me why I never receive the greeting message?
Server:
int
main(int argc, char **argv)
{
int listenfd, connfd;
socklen_t len;
struct sockaddr_in servaddr, cliaddr;
char buff[MAXLINE];
time_t ticks;
char message[50];
char temp_scale[2];
char recvdata[MAXLINE + 1];
listenfd = Socket(AF_INET, SOCK_STREAM, 0);
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);/*----------------------------------------------------*/
servaddr.sin_port = htons(5678);
Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));
Listen(listenfd, LISTENQ);
printf("Listening on port 5678...Press Ctrl+C to end server\n");
printf("Waiting for incoming connections...\n");
for ( ; ; )
{
len = sizeof(cliaddr);
connfd = Accept(listenfd, (SA *) &cliaddr, &len);
/*Client connects to server*/
printf("Connection from %s, port %d\n",
Inet_ntop(AF_INET, &cliaddr.sin_addr, buff, sizeof(buff)),
ntohs(cliaddr.sin_port));
snprintf(message, sizeof(message), "%s\r\n", "Welcome!");
Writen(connfd, message, strlen(message));
while ( (n = read(connfd, recvdata, MAXLINE)) > 0)
{
recvdata[n] = 0; /* null terminate*/
if (fputs(recvdata, stdout) == EOF)
err_sys("fputs error");
}
if (n < 0)
err_sys("read error");
Close(connfd);
}
}
Client:
int
main(int argc, char **argv)
{
int sockfd, n;
socklen_t len;
char recvline[MAXLINE + 1];
struct sockaddr_in servaddr, cliaddr;
char scale[2];
/*if (argc != 2)
err_quit("usage: a.out <IPaddress>");*/
if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
err_sys("socket error");
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(atoi(argv[2])); /*port passed through command line*/
if (inet_pton(AF_INET, argv[1], &servaddr.sin_addr) <= 0) /*The client translates the server address, passed on the command line*/
err_quit("inet_pton error for %s", argv[1]);
printf("Connect...\n");
if (connect(sockfd, (SA *) &servaddr, sizeof(servaddr)) < 0)
err_sys("connect error");
len = sizeof(cliaddr);
Getsockname(sockfd, (SA *) &cliaddr, &len);
printf("Local Address is: %s\n",
Sock_ntop((SA *) &cliaddr, sizeof(cliaddr)));
while ( (n = read(sockfd, recvline, MAXLINE)) > 0) {
recvline[n] = 0; /* null terminate */
if (fputs(recvline, stdout) == EOF)
err_sys("fputs error");
}
if (n < 0)
err_sys("read error");
printf("Enter the thermal Unit ('C' Celsius, 'F' Farehnheit: ");
send_data(sockfd);
exit(0);
}
Thanks!