54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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// Copyright 2020 Hugo Lindström <hugolm84@gmail.com>
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// This software is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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#include <netinet/in.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <sys/socket.h>
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#include <unistd.h>
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void
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error(const char *msg)
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{
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perror(msg);
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exit(1);
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}
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int
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server(int portno)
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{
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int sockfd, newsockfd;
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socklen_t clilen;
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struct sockaddr_in serv_addr, cli_addr;
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int n;
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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if (sockfd < 0) {
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error("ERROR opening socket");
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}
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bzero((char *) &serv_addr, sizeof(serv_addr));
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_addr.s_addr = INADDR_ANY;
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serv_addr.sin_port = htons(portno);
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if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) <
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0) {
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error("ERROR on binding");
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}
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listen(sockfd, 5);
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clilen = sizeof(cli_addr);
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newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, &clilen);
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if (newsockfd < 0) {
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error("ERROR on accept");
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}
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n = write(newsockfd, "Hello Client!", 13);
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if (n < 0)
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error("ERROR writing to socket");
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close(newsockfd);
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close(sockfd);
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return 0;
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}
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