httpd 是 Apache HTTP Server 的守護進程名稱，Apache HTTP Server 是一種廣泛使用的開源網頁服務器軟件。

本項目是從LwIP中抽取的HTTP服務器代碼；

`Hi3861 SDK`中已經包含了一份預編譯的lwip，但沒有開啟HTTP服務器功能（靜態庫無法修改）；

HTTP 服務器特性

目前已測試通過的功能有：

1. 通過HTTP訪問靜態資源文件
2. 通過cgi回調函數處理表單和頁面跳轉

靜態資源文件：

• 本服務器實現不支持實際的服務端本地文件系統訪問；
• 取而代之的是，一種簡單的虛擬文件系統：
  • \\third_party\httpd\src\http\fs.c 文件提供了一套文件系統接口，使用數組直接存儲文件數據
  • \\third_party\httpd\src\http\fsdata.c文件是由 makefsdata命令生成的虛擬文件系統元數據文件
  • makefsdata 命令行工具，用于將一個目錄下的靜態資源文件轉換為 fsdata.c文件

代碼編寫

修改D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\BUILD.gn文件

# Copyright (c) 2023 Beijing HuaQing YuanJian Education Technology Co., Ltd
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#    http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License. import("//build/lite/config/component/lite_component.gni")lite_component("demo") {features = [#"base_00_helloworld:base_helloworld_example",#"base_01_led:base_led_example",#"base_02_loopkey:base_loopkey_example",#"base_03_irqkey:base_irqkey_example",#"base_04_adc:base_adc_example",#"base_05_pwm:base_pwm_example",#"base_06_ssd1306:base_ssd1306_example",#"kernel_01_task:kernel_task_example",#"kernel_02_timer:kernel_timer_example",#"kernel_03_event:kernel_event_example",#"kernel_04_mutex:kernel_mutex_example",#"kernel_05_semaphore_as_mutex:kernel_semaphore_as_mutex_example",#"kernel_06_semaphore_for_sync:kernel_semaphore_for_sync_example",#"kernel_07_semaphore_for_count:kernel_semaphore_for_count_example",#"kernel_08_message_queue:kernel_message_queue_example",#"wifi_09_hotspot:wifi_hotspot_example",#"wifi_10_sta:wifi_sta_example",#"tcp_11_server:tcp_server_example",#"tcp_12_client:tcp_client_example",#"udp_13_server:udp_server_example",#"udp_14_client:udp_client_example",#"network_15_mqtt:network_mqtt_example",#"network_16_sntp:network_sntp_example","network_17_httpd:network_httpd_example",]
}

創建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd文件夾

文件夾中創建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\BUILD.gn文件

# Copyright (c) 2020, HiHope Community.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.static_library("network_httpd_example") {sources = ["network_httpd_example.c","wifi_connecter.c","//third_party/httpd/src/core/altcp.c","//third_party/httpd/src/core/altcp_tcp.c","//third_party/httpd/src/http/fs.c","//third_party/httpd/src/http/httpd.c","//third_party/httpd/src/tcp_port.c",# "//third_party/httpd/src/pbuf_port.c",]defines = ["LWIP_DEBUG","HTTPD_DEBUG=0xA0","LWIP_DBG_TYPES_ON=LWIP_DBG_ON","LWIP_HTTPD_SSI"]include_dirs = ["//third_party/httpd/include","//third_party/httpd/include/lwip/apps","//foundation/communication/wifi_lite/interfaces/wifiservice","//vendor/hisi/hi3861/hi3861/third_party/lwip_sack/include/",]
}

文件夾中創建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\wifi_connecter.h文件，該頭文件包含wifi連接的宏。文件同network_16_sntp\wifi_connecter.h

文件夾中創建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\wifi_connecter.c文件，文件同network_16_sntp\wifi_connecter.c

文件夾中創建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\network_httpd_example.c文件

/** Copyright (c) 2020, HiHope Community.** Redistribution and use in source and binary forms, with or without* modification, are permitted provided that the following conditions are met:** 1. Redistributions of source code must retain the above copyright notice, this*    list of conditions and the following disclaimer.** 2. Redistributions in binary form must reproduce the above copyright notice,*    this list of conditions and the following disclaimer in the documentation*    and/or other materials provided with the distribution.** 3. Neither the name of the copyright holder nor the names of its*    contributors may be used to endorse or promote products derived from*    this software without specific prior written permission.** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*/#include <stdio.h>
#include "ohos_init.h"
#include "cmsis_os2.h"
// #include "wifiiot_at.h"#include "httpd.h"
#include "wifi_connecter.h"static int g_netId = -1;
#define STACK_SIZE  (4096)#ifdef LWIP_HTTPD_CGI
const char *HelloHandler(int iIndex, int nParams, char *pcParam[], char *pcValue[])
{printf("HelloHandler\r\n");printf("iIndex = %d\r\n", iIndex);for (int i = 0; i < nParams; i++) {printf("pcParam[%d] = '%s'\r\n", i, pcParam[i]);printf("pcValue[%d] = '%s'\r\n", i, pcValue[i]);}return "/index.html"; // forward to home page.
}static tCGI g_cgiHandlers[] = {{ "/hello", HelloHandler },
};
#endif#if LWIP_HTTPD_SSI
u16_t FooSsiHandler(
#if LWIP_HTTPD_SSI_RAWconst char* tag,
#else /* LWIP_HTTPD_SSI_RAW */int tag,
#endif /* LWIP_HTTPD_SSI_RAW */char *pcInsert, int iInsertLen
#if LWIP_HTTPD_SSI_MULTIPART, u16_t currentTagPart, u16_t *nextTagPart
#endif /* LWIP_HTTPD_SSI_MULTIPART */
#if defined(LWIP_HTTPD_FILE_STATE) && LWIP_HTTPD_FILE_STATE, void *connectionState
#endif /* LWIP_HTTPD_FILE_STATE */
)
{printf("FooSsiHandler\r\n");#if LWIP_HTTPD_SSI_RAWprintf("tag = %s\r\n", tag);
#elseprintf("tag = %d\r\n", tag);
#endifprintf("insertLen = %d\r\n", iInsertLen);printf("insertText = %s\r\n", pcInsert);return 0;
}
#endifstatic void HttpdTask(void)
{WifiDeviceConfig config = {0};// 準備AP的配置參數// strcpy(config.ssid, PARAM_HOTSPOT_SSID);// strcpy(config.preSharedKey, PARAM_HOTSPOT_PSK);strcpy_s(config.ssid, WIFI_MAX_SSID_LEN, PARAM_HOTSPOT_SSID);strcpy_s(config.preSharedKey, WIFI_MAX_KEY_LEN, PARAM_HOTSPOT_PSK);config.securityType = PARAM_HOTSPOT_TYPE;g_netId = ConnectToHotspot(&config);printf("netId = %d\r\n", g_netId);#ifdef LWIP_HTTPD_CGIhttp_set_cgi_handlers(g_cgiHandlers, LWIP_ARRAYSIZE(g_cgiHandlers));
#endif#ifdef LWIP_HTTPD_SSIhttp_set_ssi_handler(FooSsiHandler, NULL, 0);
#endifhttpd_init();
}static void HttpdEntry(void)
{osThreadAttr_t attr = {0};attr.name = "HttpdTask";attr.stack_size = STACK_SIZE;attr.priority = osPriorityNormal;if (osThreadNew(HttpdTask, NULL, &attr) == NULL) {printf("[HttpdEntry] create HttpdTask failed!\n");}
}
SYS_RUN(HttpdEntry);

使用build，編譯成功后，使用upload進行燒錄。

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