104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
/*
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* \brief Minimal HTTP server demonstration using socket API
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* \author Josef Soentgen
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* \date 2016-03-22
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*/
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/*
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* Copyright (C) 2016 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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/* Genode includes */
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#include <base/printf.h>
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/* libc includes */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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const static char http_html_hdr[] =
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"HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n"; /* HTTP response header */
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const static char http_index_html[] =
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"<html><head><title>Congrats!</title></head><body><h1>Welcome to our HTTP demonstration server!</h1><p>This is a small test page.</body></html>"; /* HTML page */
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static void serve(int fd) {
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char buf[1024];
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ssize_t buflen;
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/* Read the data from the port, blocking if nothing yet there.
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We assume the request (the part we care about) is in one packet */
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buflen = recv(fd, buf, 1024, 0);
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// PLOG("Packet received!");
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/* Ignore all receive errors */
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if (buflen > 0) {
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/* Is this an HTTP GET command? (only check the first 5 chars, since
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there are other formats for GET, and we're keeping it very simple)*/
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if (buflen >= 5 &&
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buf[0] == 'G' &&
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buf[1] == 'E' &&
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buf[2] == 'T' &&
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buf[3] == ' ' &&
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buf[4] == '/' ) {
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// PLOG("Will send response");
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/* Send http header */
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send(fd, http_html_hdr, sizeof(http_html_hdr), 0);
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/* Send our HTML page */
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send(fd, http_index_html, sizeof(http_index_html), 0);
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}
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}
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}
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int main()
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{
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int s;
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PLOG("Create new socket ...");
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if((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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PERR("No socket available!");
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return -1;
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}
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PLOG("Now, I will bind ...");
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struct sockaddr_in in_addr;
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in_addr.sin_family = AF_INET;
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in_addr.sin_port = htons(80);
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in_addr.sin_addr.s_addr = INADDR_ANY;
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if(bind(s, (struct sockaddr*)&in_addr, sizeof(in_addr))) {
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PERR("bind failed!");
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return -1;
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}
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PLOG("Now, I will listen ...");
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if(listen(s, 5)) {
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PERR("listen failed!");
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return -1;
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}
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PLOG("Start the server loop ...");
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while(true) {
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struct sockaddr addr;
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socklen_t len = sizeof(addr);
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int client = accept(s, &addr, &len);
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if(client < 0) {
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PWRN("Invalid socket from accept!");
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continue;
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}
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serve(client);
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close(client);
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}
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return 0;
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}
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