107 lines
1.8 KiB
Go
107 lines
1.8 KiB
Go
/*
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* Copyright (C) Max Romanov
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* Copyright (C) NGINX, Inc.
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*/
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package unit
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/*
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#include "nxt_cgo_lib.h"
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*/
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import "C"
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import (
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"net/http"
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)
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type response struct {
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header http.Header
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header_sent bool
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c_req *C.nxt_unit_request_info_t
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ch chan int
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}
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func (r *response) Header() http.Header {
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return r.header
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}
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func (r *response) Write(p []byte) (n int, err error) {
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if !r.header_sent {
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r.WriteHeader(http.StatusOK)
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}
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l := len(p)
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written := int(0)
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br := buf_ref(p)
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for written < l {
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res := C.nxt_cgo_response_write(r.c_req, br, C.uint32_t(l - written))
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written += int(res)
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br += C.uintptr_t(res)
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if (written < l) {
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if r.ch == nil {
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r.ch = make(chan int, 2)
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}
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wait_shm_ack(r.ch)
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}
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}
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return written, nil
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}
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func (r *response) WriteHeader(code int) {
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if r.header_sent {
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nxt_go_warn("multiple response.WriteHeader calls")
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return
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}
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r.header_sent = true
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// Set a default Content-Type
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if _, hasType := r.header["Content-Type"]; !hasType {
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r.header.Add("Content-Type", "text/html; charset=utf-8")
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}
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fields := 0
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fields_size := 0
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for k, vv := range r.header {
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for _, v := range vv {
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fields++
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fields_size += len(k) + len(v)
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}
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}
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C.nxt_unit_response_init(r.c_req, C.uint16_t(code), C.uint32_t(fields),
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C.uint32_t(fields_size))
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for k, vv := range r.header {
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for _, v := range vv {
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C.nxt_unit_response_add_field(r.c_req, str_ref(k), C.uint8_t(len(k)),
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str_ref(v), C.uint32_t(len(v)))
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}
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}
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C.nxt_unit_response_send(r.c_req)
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}
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func (r *response) Flush() {
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if !r.header_sent {
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r.WriteHeader(http.StatusOK)
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}
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}
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var observer_registry_ observable
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func wait_shm_ack(c chan int) {
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observer_registry_.attach(c)
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_ = <-c
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}
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//export nxt_go_shm_ack_handler
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func nxt_go_shm_ack_handler(ctx *C.nxt_unit_ctx_t) {
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observer_registry_.notify(1)
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}
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