ceph/src/civetweb/examples/_obsolete/hello/hello.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "civetweb.h"
   4
   5 // This function will be called by civetweb on every new request.
   6 static int begin_request_handler(struct mg_connection *conn)
   7 {
   8     const struct mg_request_info *request_info = mg_get_request_info(conn);
   9     char content[100];
  10
  11     // Prepare the message we're going to send
  12     int content_length = snprintf(content, sizeof(content),
  13                                   "Hello from civetweb! Remote port: %d",
  14                                   request_info->remote_port);
  15
  16     // Send HTTP reply to the client
  17     mg_printf(conn,
  18               "HTTP/1.1 200 OK\r\n"
  19               "Content-Type: text/plain\r\n"
  20               "Content-Length: %d\r\n"        // Always set Content-Length
  21               "\r\n"
  22               "%s",
  23               content_length, content);
  24
  25     // Returning non-zero tells civetweb that our function has replied to
  26     // the client, and civetweb should not send client any more data.
  27     return 1;
  28 }
  29
  30 int main(void)
  31 {
  32     struct mg_context *ctx;
  33     struct mg_callbacks callbacks;
  34
  35     // List of options. Last element must be NULL.
  36     const char *options[] = {"listening_ports", "8080", NULL};
  37
  38     // Prepare callbacks structure. We have only one callback, the rest are NULL.
  39     memset(&callbacks, 0, sizeof(callbacks));
  40     callbacks.begin_request = begin_request_handler;
  41
  42     // Start the web server.
  43     ctx = mg_start(&callbacks, NULL, options);
  44
  45     // Wait until user hits "enter". Server is running in separate thread.
  46     // Navigating to http://localhost:8080 will invoke begin_request_handler().
  47     getchar();
  48
  49     // Stop the server.
  50     mg_stop(ctx);
  51
  52     return 0;
  53 }