Commit 95ace332 authored by Aun-Ali Zaidi's avatar Aun-Ali Zaidi

Initial Commit! Add boilerplate code.

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ngx_quic
========
An experimental implementaion of the QUIC protocol for NGINX.
ngx_addon_name=ngx_quic_module
HTTP_MODULES="$HTTP_MODULES ngx_quic_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/src/ngx_quic_module.c"
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
// Declare a handler.
static char* ngx_quic_init(ngx_conf_t* cf, ngx_command_t* cmd, void* conf);
// Create a HTTP body.
static u_char ngx_quic_string[] = "Experimental QUIC Implementation for NGINX - Aun-Ali Zaidi";
// Specify the NGINX module configuration.
static ngx_command_t ngx_quic_commands[] = {
{
// Our command is called "quic"
ngx_string("quic"),
// This directive may be specified in the location-level of your nginx-config.
// The directive does not take any arguments [NGX_CONF_NOARGS]]
NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
// A pointer to our handler function.
ngx_quic_init,
// We're not using these two, they're related to the configuration structures.
0, 0,
// A pointer to apost-processing handler. We're not using any here.
NULL
},
ngx_null_command
};
// Declare the NGINX module context.
static ngx_http_module_t ngx_quic_module_ctx = {
NULL, // preconfiguration
NULL, // postconfiguration
NULL, // create main configuration
NULL, // init main configuration
NULL, // create server configuration
NULL, // merge server configuration
NULL, // create location configuration
NULL, // merge location configuration
};
// Declare the NGINX module description.
ngx_module_t ngx_quic_module = {
NGX_MODULE_V1,
&ngx_quic_module_ctx, // module context
ngx_quic_commands, // module directives
NGX_HTTP_MODULE, // module type
NULL, // init master
NULL, // init module
NULL, // init process
NULL, // init thread
NULL, // exit thread
NULL, // exit process
NULL, // exit master
NGX_MODULE_V1_PADDING
};
// Module handler
static ngx_int_t ngx_quic_handler(ngx_http_request_t* r)
{
ngx_int_t rc;
ngx_buf_t* b;
ngx_chain_t out;
// We respond to 'GET' and 'HEAD' requests only
if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD)))
return NGX_HTTP_NOT_ALLOWED;
// Discard request body, since we don't need it here
rc = ngx_http_discard_request_body(r);
if (rc != NGX_OK)
return rc;
// Set the 'Content-type' header.
r->headers_out.content_type_len = sizeof("text/html") - 1;
r->headers_out.content_type.len = sizeof("text/html") - 1;
r->headers_out.content_type.data = (unsigned char*)"text/html";
// Send the header only, if the request type is http 'HEAD'.
if (r->method == NGX_HTTP_HEAD) {
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = sizeof(ngx_quic_string) - 1;
return ngx_http_send_header(r);
}
// Allocate a buffer for your response body.
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
// Attach this buffer to the buffer chain.
out.buf = b;
out.next = NULL;
// Adjust the pointers of the buffer.
b->pos = ngx_quic_string;
b->last = ngx_quic_string + sizeof(ngx_quic_string) - 1;
b-> memory = 1; // This buffer is in read-only memory
// This means that filters should copy it, and not try to rewrite in place.
b->last_buf = 1; // This is the last buffer in the buffer chain.
// Set the status line.
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = sizeof(ngx_quic_string) - 1;
// Send the headers of your response.
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only)
return rc;
// Send the buffer chain of your response.
return ngx_http_output_filter(r, &out);
}
// Initialization handler function.
static char* ngx_quic_init(ngx_conf_t* cf, ngx_command_t* cmd, void* conf)
{
ngx_http_core_loc_conf_t* clcf;
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
clcf->handler = ngx_quic_handler; // Handler to process the 'quic' directive.
return NGX_CONF_OK;
}
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