mirror of
https://github.com/cesanta/mongoose.git
synced 2024-12-05 10:58:59 +08:00
a6c66fb669
PUBLISHED_FROM=de89316ca3b53b8eb46ea69e88b5fbd277c80dc2
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
// Copyright (c) 2015 Cesanta Software Limited
|
|
// All rights reserved
|
|
//
|
|
// This example demonstrates how to handle very large requests without keeping
|
|
// them in memory.
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include "mongoose.h"
|
|
|
|
static const char *s_http_port = "8000";
|
|
|
|
struct file_writer_data {
|
|
FILE *fp;
|
|
size_t bytes_written;
|
|
};
|
|
|
|
static void handle_request(struct mg_connection *nc) {
|
|
// This handler gets for all endpoints but /upload
|
|
mg_printf(nc, "%s",
|
|
"HTTP/1.1 200 OK\r\n"
|
|
"Content-Type: text/html\r\n"
|
|
"Connection: close\r\n"
|
|
"\r\n"
|
|
"<html><body>Upload example."
|
|
"<form method=\"POST\" action=\"/upload\" "
|
|
" enctype=\"multipart/form-data\">"
|
|
"<input type=\"file\" name=\"file\" /> <br/>"
|
|
"<input type=\"submit\" value=\"Upload\" />"
|
|
"</form></body></html>");
|
|
nc->flags |= MG_F_SEND_AND_CLOSE;
|
|
}
|
|
|
|
static void handle_upload(struct mg_connection *nc, int ev, void *p) {
|
|
struct file_writer_data *data = (struct file_writer_data *) nc->user_data;
|
|
struct mg_http_multipart_part *mp = (struct mg_http_multipart_part*)p;
|
|
|
|
switch (ev) {
|
|
case MG_EV_HTTP_PART_BEGIN: {
|
|
if (data == NULL) {
|
|
data = calloc(1, sizeof(struct file_writer_data));
|
|
data->fp = tmpfile();
|
|
data->bytes_written = 0;
|
|
|
|
if (data->fp == NULL) {
|
|
mg_printf(nc, "%s",
|
|
"HTTP/1.1 500 Failed to open a file\r\n"
|
|
"Content-Length: 0\r\n\r\n");
|
|
nc->flags |= MG_F_SEND_AND_CLOSE;
|
|
return;
|
|
}
|
|
nc->user_data = (void *) data;
|
|
}
|
|
break;
|
|
}
|
|
case MG_EV_HTTP_PART_DATA: {
|
|
if (fwrite(mp->data.p, 1, mp->data.len, data->fp) != mp->data.len) {
|
|
mg_printf(nc, "%s",
|
|
"HTTP/1.1 500 Failed to write to a file\r\n"
|
|
"Content-Length: 0\r\n\r\n");
|
|
nc->flags |= MG_F_SEND_AND_CLOSE;
|
|
return;
|
|
}
|
|
data->bytes_written += mp->data.len;
|
|
break;
|
|
}
|
|
case MG_EV_HTTP_PART_END: {
|
|
mg_printf(nc,
|
|
"HTTP/1.1 200 OK\r\n"
|
|
"Content-Type: text/plain\r\n"
|
|
"Connection: close\r\n\r\n"
|
|
"Written %ld of POST data to a temp file\n\n",
|
|
(long) ftell(data->fp));
|
|
nc->flags |= MG_F_SEND_AND_CLOSE;
|
|
fclose(data->fp);
|
|
free(data);
|
|
nc->user_data = NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
|
|
(void) ev_data;
|
|
switch (ev) {
|
|
case MG_EV_HTTP_REQUEST:
|
|
// Invoked when the full HTTP request is in the buffer (including body).
|
|
handle_request(nc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
struct mg_mgr mgr;
|
|
struct mg_connection *nc;
|
|
|
|
mg_mgr_init(&mgr, NULL);
|
|
nc = mg_bind(&mgr, s_http_port, ev_handler);
|
|
|
|
mg_register_http_endpoint(nc, "/upload", handle_upload);
|
|
// Set up HTTP server parameters
|
|
mg_set_protocol_http_websocket(nc);
|
|
|
|
printf("Starting web server on port %s\n", s_http_port);
|
|
for (;;) {
|
|
mg_mgr_poll(&mgr, 1000);
|
|
}
|
|
mg_mgr_free(&mgr);
|
|
|
|
return 0;
|
|
}
|