- php_stream_printf(ctx->stream TSRMLS_CC, "HTTP/%u.%u %ld %s" PHP_HTTP_CRLF, ctx->version.major, ctx->version.minor, ctx->status_code, php_http_env_get_response_status_for_code(ctx->status_code));
- php_http_env_response_stream_header(ctx, &ctx->header);
- php_stream_write_string(ctx->stream, PHP_HTTP_CRLF);
- ctx->started = 1;
- return SUCCESS;
+ php_http_buffer_init(&header_buf);
+ php_http_buffer_appendf(&header_buf, "HTTP/%u.%u %ld %s" PHP_HTTP_CRLF, ctx->version.major, ctx->version.minor, ctx->status_code, php_http_env_get_response_status_for_code(ctx->status_code));
+
+ /* there are some limitations regarding TE:chunked, see https://tools.ietf.org/html/rfc7230#section-3.3.1 */
+ if (ctx->version.major == 1 && ctx->version.minor == 0) {
+ ctx->chunked = 0;
+ } else if (ctx->status_code == 204 || ctx->status_code/100 == 1) {
+ ctx->chunked = 0;
+ } else if (ctx->request && ctx->status_code/100 == 2 && !strcasecmp(ctx->request->http.info.request.method, "CONNECT")) {
+ ctx->chunked = 0;
+ }
+
+ php_http_env_response_stream_header(ctx, &ctx->header, &header_buf);
+
+ /* enable chunked transfer encoding */
+ if (ctx->chunked) {
+ php_http_buffer_appends(&header_buf, "Transfer-Encoding: chunked" PHP_HTTP_CRLF);
+ }
+
+ php_http_buffer_appends(&header_buf, PHP_HTTP_CRLF);
+
+ if (header_buf.used == php_stream_write(ctx->stream, header_buf.data, header_buf.used)) {
+ ctx->started = 1;
+ }
+ php_http_buffer_dtor(&header_buf);
+ php_stream_flush(ctx->stream);
+
+ if (ctx->chunked) {
+ ctx->chunked_filter = php_stream_filter_create("http.chunked_encode", NULL, 0);
+ php_stream_filter_append(&ctx->stream->writefilters, ctx->chunked_filter);
+ }
+
+ return ctx->started ? SUCCESS : FAILURE;