昆明网站建设SEO公司,昆明网站建设天猫运营,付费的网站推广该怎么做,浦口国家建设部网站今天抽了点时间看了一下 mongoose的源码#xff0c; github 地址#xff0c;发现跟以前公司内部使用的不太一样#xff0c;这里正好利用其 http server 例子来看一下。以前的 http message 结构体是这样的#xff1a;
/* HTTP message */
struct http_message {struct mg_… 今天抽了点时间看了一下 mongoose的源码 github 地址发现跟以前公司内部使用的不太一样这里正好利用其 http server 例子来看一下。以前的 http message 结构体是这样的
/* HTTP message */
struct http_message {struct mg_str message; /* Whole message: request line headers body */struct mg_str body; /* Message body. 0-length for requests with no body *//* HTTP Request line (or HTTP response line) */struct mg_str method; /* GET */struct mg_str uri; /* /my_file.html */struct mg_str proto; /* HTTP/1.1 -- for both request and response *//* For responses, code and response status message are set */int resp_code;struct mg_str resp_status_msg;/** Query-string part of the URI. For example, for HTTP request* GET /foo/bar?param1val1param2val2* | uri | query_string |** Note that question mark character doesnt belong neither to the uri,* nor to the query_string*/struct mg_str query_string;/* Headers */struct mg_str header_names[MG_MAX_HTTP_HEADERS];struct mg_str header_values[MG_MAX_HTTP_HEADERS];
};
github 上的源码的http message 结构体是这样的
struct mg_http_message {struct mg_str method, uri, query, proto; // Request/response linestruct mg_http_header headers[MG_MAX_HTTP_HEADERS]; // Headersstruct mg_str body; // Bodystruct mg_str head; // Request headersstruct mg_str chunk; // Chunk for chunked encoding, or partial bodystruct mg_str message; // Request headers body
};
很明显现在的头部消息使用了 mg_http_header 结构体它的定义是这样的
struct mg_http_header {struct mg_str name; // Header namestruct mg_str value; // Header value
};
今天使用的是mongoose 自带的例子位于源码目录的 examples/http-server 下的 main.c因为我使用了c的所以我自己创建了目录 myExample/http_server把它的 main.c 换成了 main.cppmakefile 使用自己的在编译的时候解决一下编译问题即可。 自己写的Makefile
#中间文件存放目录如.o 和 .d 文件
COMPILE_DIR compile
BIN_DIR bin# 可编译arm版本
#CROSS arm-himix200-linux-
CC gcc
CPP $(CROSS)g -stdc11
CFLAGS -Werror -g
CFLAGS -I../../
CPP_SRCS $(wildcard *.cpp)
CPP_OBJS $(patsubst %.cpp, $(COMPILE_DIR)/%.o, $(CPP_SRCS))
CPP_DEP $(patsubst %.cpp, $(COMPILE_DIR)/%.cpp.d, $(CPP_SRCS))OBJS $(CPP_OBJS) $(C_OBJS)
DEP_ALL $(CPP_DEP) $(C_DEP)$(shell if [ ! -d $(COMPILE_DIR) ]; then mkdir $(COMPILE_DIR); fi)
$(shell if [ ! -d $(BIN_DIR) ]; then mkdir $(BIN_DIR); fi)BIN
ifeq ($(target), ) #如果是空的
BIN httpServer
else
BIN : $(target)
endifTARGET$(BIN_DIR)/$(BIN)all: $(TARGET)-include $(DEP_ALL)$(TARGET): $(OBJS) $(COMPILE_DIR)/mongoose.o$(CPP) $(CFLAGS) $^ -o $ $(COMPILE_DIR)/%.o: %.cpp $(COMPILE_DIR)/%.cpp.d$(CPP) $(CFLAGS) -c $ -o $$(COMPILE_DIR)/%.cpp.d: %.cpp$(CPP) $(CFLAGS) -MM -E -c $ -o $sed s/.*\.o/$(subst /,\/,$(dir $))/g $ $.tmpmv $.tmp $$(COMPILE_DIR)/mongoose.o: ../../mongoose.c$(CC) $(CFLAGS) -c $ -o $$(COMPILE_DIR)/%.c.d: %.c$(CC) $(CFLAGS) -MM -E -c $ -o $sed s/.*\.o/$(subst /,\/,$(dir $))/g $ $.tmpmv $.tmp $.PHONY: clean
clean:rm -rf $(COMPILE_DIR) $(BIN_DIR)同时把main.cpp里的书写格式也改了还是习惯一行行的看代码
// Copyright (c) 2020 Cesanta Software Limited
// All rights reserved#include signal.h
#include mongoose.hstatic int s_debug_level MG_LL_INFO;
static const char *s_root_dir .;
static const char *s_listening_address http://0.0.0.0:8190;
static const char *s_enable_hexdump no;
static const char *s_ssi_pattern #.html;// Handle interrupts, like Ctrl-C
static int s_signo;
static void signal_handler(int signo)
{s_signo signo;
}// Event handler for the listening connection.
// Simply serve static files from s_root_dir
static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data)
{if (ev MG_EV_HTTP_MSG) {struct mg_http_message *hm (mg_http_message *)ev_data, tmp {0};struct mg_str unknown mg_str_n(?, 1), *cl;struct mg_http_serve_opts opts {0};//不能用ptr直接打印需要根据lenMG_INFO((method(%d): %s, uri(%d): %s, query(%d): %s, proto(%d): %s, hm-method.len, hm-method.ptr, hm-uri.len, hm-uri.ptr, hm-query.len, hm-query.ptr, hm-proto.len, hm-proto.ptr));MG_INFO((method ptr: %p, uri ptr: %p, query ptr: %p, proto ptr: %p\n, hm-method.ptr, hm-uri.ptr, hm-query.ptr, hm-proto.ptr));//设置目录起点opts.root_dir s_root_dir;opts.ssi_pattern s_ssi_pattern;mg_http_serve_dir(c, hm, opts);mg_http_parse((char *) c-send.buf, c-send.len, tmp);cl mg_http_get_header(tmp, Content-Length);if (cl NULL) {cl unknown;}MG_INFO((%.*s %.*s %.*s %.*s, (int) hm-method.len, hm-method.ptr,(int) hm-uri.len, hm-uri.ptr, (int) tmp.uri.len, tmp.uri.ptr,(int) cl-len, cl-ptr));}(void) fn_data;
}static void usage(const char *prog)
{fprintf(stderr,Mongoose v.%s\nUsage: %s OPTIONS\n -H yes|no - enable traffic hexdump, default: %s\n -S PAT - SSI filename pattern, default: %s\n -d DIR - directory to serve, default: %s\n -l ADDR - listening address, default: %s\n -v LEVEL - debug level, from 0 to 4, default: %d\n,MG_VERSION, prog, s_enable_hexdump, s_ssi_pattern, s_root_dir,s_listening_address, s_debug_level);exit(EXIT_FAILURE);
}int main(int argc, char *argv[])
{char path[MG_PATH_MAX] .;struct mg_mgr mgr;struct mg_connection *c;int i;// Parse command-line flagsfor (i 1; i argc; i) {if (strcmp(argv[i], -d) 0) {s_root_dir argv[i];} else if (strcmp(argv[i], -H) 0) {s_enable_hexdump argv[i];} else if (strcmp(argv[i], -S) 0) {s_ssi_pattern argv[i];} else if (strcmp(argv[i], -l) 0) {s_listening_address argv[i];} else if (strcmp(argv[i], -v) 0) {s_debug_level atoi(argv[i]);} else {usage(argv[0]);}}// Root directory must not contain double dots. Make it absolute// Do the conversion only if the root dir spec does not contain overridesif (strchr(s_root_dir, ,) NULL) {realpath(s_root_dir, path);s_root_dir path;}// Initialise stuffsignal(SIGINT, signal_handler);signal(SIGTERM, signal_handler);mg_log_set(s_debug_level);mg_mgr_init(mgr);if ((c mg_http_listen(mgr, s_listening_address, cb, mgr)) NULL) {MG_ERROR((Cannot listen on %s. Use http://ADDR:PORT or :PORT, s_listening_address));exit(EXIT_FAILURE);}if (mg_casecmp(s_enable_hexdump, yes) 0) {c-is_hexdumping 1;}// Start infinite event loopMG_INFO((Mongoose version : v%s, MG_VERSION));MG_INFO((Listening on : %s, s_listening_address));MG_INFO((Web root : [%s], s_root_dir));while (s_signo 0) {mg_mgr_poll(mgr, 1000);}mg_mgr_free(mgr);MG_INFO((Exiting on signal %d, s_signo));return 0;
}在实际使用的时候需要注意 struct mg_str 结构体如 mg_http_message 中的 method, uri, query, proto 等代码里我只是好奇地想打印一下这些数据然而结果并不是我想要的如 MG_INFO((method(%d): %s, uri(%d): %s, query(%d): %s, proto(%d): %s, hm-method.len, hm-method.ptr, hm-uri.len, hm-uri.ptr, hm-query.len, hm-query.ptr, hm-proto.len, hm-proto.ptr));MG_INFO((method ptr: %p, uri ptr: %p, query ptr: %p, proto ptr: %p\n, hm-method.ptr, hm-uri.ptr, hm-query.ptr, hm-proto.ptr));
打印 mg_str 的时候使用了其 ptr 指针而打印出这些指针可以看到它们指向的是连续的一个地址
[2023/08/10 14:52:21 510890 Info] main.cpp:32:cb method ptr: 0x1f30580, uri ptr: 0x1f30584, query ptr: 0x0, proto ptr: 0x1f30586 0x1f30580 3(method 的长度) 1(一个空格) 0x1f305840x1f30584 1(uri的长度)1(一个空格) 0x1f30586。
使用了 std::string std::string method(hm-method.ptr, hm-method.len);std::string uri(hm-uri.ptr, hm-uri.len);std::string proto(hm-proto.ptr, hm-proto.len);MG_INFO((method: %s, uri: %s, proto: %s\n, method.c_str(), uri.c_str(), proto.c_str()));
