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/*
* Copyright (C) Max Romanov
* Copyright (C) NGINX, Inc.
*/
package unit
/*
#include "nxt_cgo_lib.h"
*/
import "C"
import (
"io"
"net/http"
"net/url"
"crypto/tls"
"unsafe"
)
type request struct {
req http.Request
resp response
c_req *C.nxt_unit_request_info_t
}
func (r *request) Read(p []byte) (n int, err error) {
res := C.nxt_cgo_request_read(r.c_req, buf_ref(p), C.uint32_t(len(p)))
if res == 0 && len(p) > 0 {
return 0, io.EOF
}
return int(res), nil
}
func (r *request) Close() error {
return nil
}
func new_request(c_req *C.nxt_unit_request_info_t) (r *request, err error) {
req := c_req.request
uri := GoStringN(&req.target, C.int(req.target_length))
URL, err := url.ParseRequestURI(uri)
if err != nil {
return nil, err
}
proto := GoStringN(&req.version, C.int(req.version_length))
r = &request{
req: http.Request {
URL: URL,
Header: http.Header{},
RequestURI: uri,
Method: GoStringN(&req.method, C.int(req.method_length)),
Proto: proto,
ProtoMajor: 1,
ProtoMinor: int(proto[7] - '0'),
ContentLength: int64(req.content_length),
Host: GoStringN(&req.server_name, C.int(req.server_name_length)),
RemoteAddr: GoStringN(&req.remote, C.int(req.remote_length)),
},
resp: response{header: http.Header{}, c_req: c_req},
c_req: c_req,
}
r.req.Body = r
if req.tls != 0 {
r.req.TLS = &tls.ConnectionState{ }
r.req.URL.Scheme = "https"
} else {
r.req.URL.Scheme = "http"
}
fields := get_fields(req)
for i := 0; i < len(fields); i++ {
f := &fields[i]
n := GoStringN(&f.name, C.int(f.name_length))
v := GoStringN(&f.value, C.int(f.value_length))
r.req.Header.Add(n, v)
}
return r, nil
}
func get_fields(req *C.nxt_unit_request_t) []C.nxt_unit_field_t {
f := uintptr(unsafe.Pointer(req)) + uintptr(C.NXT_FIELDS_OFFSET)
h := &slice_header{
Data: unsafe.Pointer(f),
Len: int(req.fields_count),
Cap: int(req.fields_count),
}
return *(*[]C.nxt_unit_field_t)(unsafe.Pointer(h))
}
//export nxt_go_request_handler
func nxt_go_request_handler(c_req *C.nxt_unit_request_info_t) {
go func(c_req *C.nxt_unit_request_info_t, handler http.Handler) {
ctx := c_req.ctx
for {
r, err := new_request(c_req)
if err == nil {
handler.ServeHTTP(&r.resp, &r.req)
if !r.resp.header_sent {
r.resp.WriteHeader(http.StatusOK)
}
C.nxt_unit_request_done(c_req, C.NXT_UNIT_OK)
} else {
C.nxt_unit_request_done(c_req, C.NXT_UNIT_ERROR)
}
c_req = C.nxt_unit_dequeue_request(ctx)
if c_req == nil {
break
}
}
}(c_req, get_handler(uintptr(c_req.unit.data)))
}
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