C/C++ HTTP,HTTPS实现GET和POST请求
HTTP GET和POST 实现过程
HTTP协议是在TCP基础上，加上HTTP协议头实现的
#include <QCoreApplication>
#include <qglobal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <limits.h>
#include <netdb.h>
#include <arpa/inet.h>
int socket_connect(char *server_IP, int port,char *local_IP)
{
struct sockaddr_in localSockAddr;
memset(&localSockAddr, 0, sizeof(struct sockaddr_in));
localSockAddr.sin_family = AF_INET;
localSockAddr.sin_addr.s_addr = inet_addr(local_IP);
localSockAddr.sin_port = 0;
//创建Socket
int s = socket(AF_INET, SOCK_STREAM, 0); //TCP socket
if(0 > s)
{
qDebug("Create Socket Error!");
return -1;
}
//设置超时连接
int timeout = 3000; //复杂的网络环境要设置超时判断
int ret = setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout));
ret = setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(timeout));
//指定服务器地址
struct sockaddr_in address;
socklen_t sock_len;
address.sin_family = AF_INET;
address.sin_addr.s_addr = inet_addr(server_IP);
address.sin_port = htons((unsigned short)port);
sock_len = sizeof(address);
bind(s,(struct sockaddr *)&localSockAddr, sizeof(localSockAddr));
//连接
if(-1 == connect(s,(struct sockaddr *)&address,sizeof(address)))
{
perror("ssssd");
qDebug("Can Not Connect To Server IP!\n");
return -1;
}
return s;
}
void closesocket(int sock)
{
shutdown(sock, SHUT_RDWR);
close(sock);
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
int sockfd=-1, ret;
char buffer[2048];
char local_file[256];
FILE *fp;
char request[2048];
int send, totalsend;
/* 客户程序开始建立 sockfd描述符 */
if(sockfd)
{
closesocket(sockfd);
}
sockfd=socket_connect("192.168.1.4",8080,"192.168.11.129");
if(sockfd<0)
{
qDebug("http SOCKET create fail. ");
exit(1);
}
/* //------post data--------
char buf[1000]="{"
"'clientId':'postman'"
"}";
std::string strdata = buf;
//-------post data end-----
//-------post data length-------
char lenbuf[200]={0};
sprintf(lenbuf,"%d",strdata.length());
std::string strLen=lenbuf;
//-------post data length end-------
//------http post head-------------
std::string req="/webapp_war/book/testPost";
std::string strSend = " HTTP/1.1\r\n"
"Host:192.168.1.4:8080\r\n"
"Cookie:16888\r\n"
"Content-Type:application/json\r\n"
"Charset:utf-8\r\n"
"Content-Length:";
strSend = "POST " + req + strSend + strLen + "\r\n\r\n" + strdata;
//------http post head end---------------*/
//-------http head GET start,一定要用双\r\n结尾----------
std::string strSend123 = "GET / HTTP/1.1\r\n"
"Host:192.168.1.4:8080\r\n\r\n";
printf("send=%s\n",strSend123.c_str());
//-----http head Get end---------
int ret=::send(sockfd, strSend123.c_str(), strSend123.length(), 0);
if(ret>0)
{
printf("send success%d\r\n",ret);
}
else
{
printf("send fail\r\n");
exit(-1);
}
char szBuffer[1024] = {0};
while (true)
{
int nRet = ::recv(sockfd, szBuffer, sizeof(szBuffer), 0);
if(nRet>0)
{
printf("recv() returned %d bytes\n", nRet);
printf("received: %s\n", szBuffer);
}
else
{
printf("recv error\n");
break;
}
}
}HTTPS GET和POST实现
https是在tcp基础上加了SSL，具体实现代码如下
实现https首先需要安装，openssl库我用的是openssl-1.1.1.tar.gz
#include <QCoreApplication>
#include <qglobal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <limits.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include "iostream"
#define DEBUG 1
int socket_connect(char *server_IP, int port,char *local_IP)
{
struct sockaddr_in localSockAddr;
memset(&localSockAddr, 0, sizeof(struct sockaddr_in));
localSockAddr.sin_family = AF_INET;
localSockAddr.sin_addr.s_addr = inet_addr(local_IP);
localSockAddr.sin_port = 0;
//创建Socket
int s = socket(AF_INET, SOCK_STREAM, 0); //TCP socket
if(0 > s)
{
qDebug("Create Socket Error!");
return -1;
}
//设置超时连接
int timeout = 3000; //复杂的网络环境要设置超时判断
int ret = setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout));
ret = setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(timeout));
//指定服务器地址
struct sockaddr_in address;
socklen_t sock_len;
address.sin_family = AF_INET;
address.sin_addr.s_addr = inet_addr(server_IP);
address.sin_port = htons((unsigned short)port);
sock_len = sizeof(address);
bind(s,(struct sockaddr *)&localSockAddr, sizeof(localSockAddr));
//连接
if(-1 == connect(s,(struct sockaddr *)&address,sizeof(address)))
{
perror("ssssd");
qDebug("Can Not Connect To Server IP!\n");
return -1;
}
return s;
}
void closesocket(int sock)
{
shutdown(sock, SHUT_RDWR);
close(sock);
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
int sockfd=-1, ret;
char buffer[2048];
char request[2048];
int send, totalsend;
SSL *ssl;
SSL_CTX *ctx;
/* 客户程序开始建立 sockfd描述符 */
sockfd=socket_connect("192.168.1.4",8443,"192.168.11.129");
if(sockfd<0)
{
qDebug("http SOCKET create fail. ");
exit(1);
}
/* SSL初始化 */
SSL_library_init();
SSL_load_error_strings();
ctx = SSL_CTX_new(SSLv23_client_method());
if (ctx == NULL) {
ERR_print_errors_fp(stderr);
exit(1);
}
//SSL_VERIFY_NONE,服务端验证客户端，客户端不需要验证服务端
SSL_CTX_set_verify(ctx,SSL_VERIFY_NONE,NULL);
//加载证书(客户端),第二个参数为本地证书名,第三个为路径
int crt_ret=SSL_CTX_load_verify_locations(ctx,"ca.crt","/home/pwj/Desktop/cert_key/crt_lph/");
if(crt_ret<0)
{
printf("load cert error\n");
exit(-1);
}
//加载本地证书，这个是服务器端提供给客户端证书
int use_crt1=SSL_CTX_use_certificate_file(ctx,"/home/pwj/Desktop/cert_key/crt_lph/client.crt",SSL_FILETYPE_PEM);
if(use_crt1<=0)
{
ERR_print_errors_fp(stderr);
exit(1);
}
//加载自己的私钥
int use_key1=SSL_CTX_use_PrivateKey_file(ctx,"/home/pwj/Desktop/cert_key/crt_lph/client.key",SSL_FILETYPE_PEM);
if(use_key1<=0)
{
ERR_print_errors_fp(stderr);
exit(1);
}
//验证证书与私钥
if(!SSL_CTX_check_private_key(ctx))
{
ERR_print_errors_fp(stderr);
exit(1);
}
//===========================
ssl = SSL_new(ctx);
if (ssl == NULL) {
ERR_print_errors_fp(stderr);
exit(1);
}
/* 把socket和SSL关联 */
ret = SSL_set_fd(ssl, sockfd);
if (ret == 0) {
ERR_print_errors_fp(stderr);
exit(1);
}
/* RAND_poll();
while (RAND_status() == 0) {
unsigned short rand_ret = rand() % 65536;
RAND_seed(&rand_ret, sizeof(rand_ret));
}*/
ret = SSL_connect(ssl);
if (ret != 1) {
ERR_print_errors_fp(stderr);
exit(1);
}
/* //------post data--------
char buf[1000]="{"
"'clientId':'postman'"
"}";
std::string strdata = buf;
//-------post data end-----
//-------post data length-------
char lenbuf[200]={0};
sprintf(lenbuf,"%d",strdata.length());
std::string strLen=lenbuf;
//-------post data length end-------
//------https post head-------------
std::string req="/webapp_war/book/testPost";
std::string strSend = " HTTP/1.1\r\n"
"Host:192.168.1.4:8443\r\n"
"Cookie:16888\r\n"
"Content-Type:application/json\r\n"
"Charset:utf-8\r\n"
"Content-Length:";
strSend = "POST " + req + strSend + strLen + "\r\n\r\n" + strdata;
printf("len=%d,POST:%s\n",strSend.length(),strSend.c_str());
//------https post head end---------------*/
std::string req="/webapp_war/book/list";
std::string strSend = "/ HTTP/1.1\r\n"
"Host:14.215.177.39:443\r\n\r\n";
strSend = "GET " + req + strSend;
printf("len=%d,GET:%s\n",strSend.length(),strSend.c_str());*/
/*发送https请求request */
send = 0;
totalsend = 0;
int nbytes=0;
sprintf(request,"%s",strSend.c_str());
nbytes = strlen(request);
while (totalsend < nbytes) {
send = SSL_write(ssl, request + totalsend, nbytes - totalsend);
if (send == -1) {
ERR_print_errors_fp(stderr);
exit(0);
}
totalsend += send;
rintf("%d bytes send OK!\n", totalsend);
}
int nbytess=0;
while(true)
{
nbytess = SSL_read(ssl, buffer, 2048);
if(nbytess<=0)
{
printf("ssl_read recv error\n");
break;
}
else
{
printf("ssl_read,byte=%d\n",nbytess);
printf("rcv:%s\n",buffer);
}
}
/* 结束通讯 */
ret = SSL_shutdown(ssl);
/*if (ret != 1) {
ERR_print_errors_fp(stderr);
exit(1);
}*/
close(sockfd);
SSL_free(ssl);
SSL_CTX_free(ctx);
ERR_free_strings();
//exit(0);
}
return a.exec();
}
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
