使用 http post 在 FCM 中推送通知

Question

我想向我的 fcm 客户端发送 http 帖子。

我使用FCM制作了Android客户端应用程序，服务器在窗口环境中执行。

我终于找到了如何推送 fcm 提供的通知

我发现使用http，我可以很容易地做到这一点。

火力基地说我可以用这个。

https://fcm.googleapis.com/fcm/send
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA
{
"to": "/topics/foo-bar",
"data": {
"message": "This is a Firebase Cloud Messaging Topic Message!",
}
}

但我不知道如何将它应用于我的代码。 因为我没有学会如何使用http。

为了匹配主机，我使用了"gethostbyname"功能。 但是，此函数返回"nullptr"！

我想知道的是 hname 应该是什么？我的本地 IP？还是什么？ 我真的很困惑。

这是我的代码

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#include <windows.h>
#pragma comment(lib, "ws2_32.lib")
#define MAXLINE 4096
#define MAXSUB  400
SSIZE_T process_http(int sockfd, char *page, char *poststr,char *auKey,char *topic)
{
char sendline[MAXLINE + 1], recvline[MAXLINE + 1];
SSIZE_T n;
snprintf(sendline, MAXSUB,
"https:%srn"
"Content-type: application/jsonrn"
"Authorization:key=%srn"
"{rn"
""to":"\topics\%s",rn"
""data" : {rn"
""message" : "%s",rn"
"}rn"
"}rn"
, page, auKey, topic, poststr);
printf("send data : %snn", sendline);
send(sockfd, sendline, strlen(sendline), 0);
while ((n = recv(sockfd, recvline, MAXLINE, 0)) > 0)
{
recvline[n] = '';
printf("%snn", recvline);
}
return n;
}
int main()
{
WSADATA wsaData;
SOCKET hSocket;
int strlen;
hostent *Host;
SOCKADDR_IN servAddr;
//********** You can change. Put any values here *******
char *hname = "https://fcm.googleapis.com/fcm/send";
char *page_0 = "//fcm.googleapis.com/fcm/send";
char *auKey = "AAAAXTiYFNU:APA91bGcH-Ee7JDVC9ZvDA4n09VR3W6x3AEcVrWQjrhbCeQQ_L5pF-7mNRgeMg0xW8g78uLVkjygJ93Za3NL7BXxDvetpZYTSHfiitZwPpiD9iQhgslNuy5Mlz4iuhAHILUpXhAK_o1W";
char *poststr_0 = "1#";// using camera Number
char *topic = "news"; // input topic name
//*******************************************************
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
printf("WSAStartup failed.n");
exit(1);
}
while (1)
{
hSocket = socket(PF_INET, SOCK_STREAM, 0);
if (hSocket == INVALID_SOCKET)
{
printf("Socket failed.n");
exit(1);
}
//Host = gethostbyname(hname);
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = AF_INET;
servAddr.sin_addr.s_addr = inet_addr(hname);
servAddr.sin_port = htons(80);
if (connect(hSocket, (SOCKADDR*)&servAddr, sizeof(servAddr)) == SOCKET_ERROR)
{
printf("Connect failed.n");
exit(1);
}
printf("Connectednn");
process_http(hSocket, page_0, poststr_0, auKey, topic);
closesocket(hSocket);
Sleep(10000);
}
WSACleanup;
return 0;
}

Answer 1

我是根据你的来源制作的。该来源使用"C"。谢谢。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winsock2.h>
#include <windows.h>
#pragma comment(lib, "ws2_32.lib")
#define MAXLINE 4096
#define MAXSUB  400
SSIZE_T process_http(int sockfd, char *page, char *hname, char *data,char *auKey)
{
char sendline[MAXLINE + 1], recvline[MAXLINE + 1];
SSIZE_T n;
sprintf(sendline,
// Header 
"POST %s HTTP/1.1rn"
"Host: %srn"
"Content-Type: application/json;charset=utf-8;rn"
"Authorization:key=%srn"
"Content-Length: %drnrn"
// Data
"%s", page, hname, auKey, strlen(data), data);
printf("send data : %snn", sendline);
send(sockfd, sendline, strlen(sendline), 0);
while ((n = recv(sockfd, recvline, MAXLINE, 0)) > 0)
{
recvline[n] = '';
printf("recv : %snn", recvline);
}
return n;
}
int main()
{
WSADATA wsaData;
SOCKET hSocket;
int strlen;
struct hostent *Host;
SOCKADDR_IN servAddr;
char *hname = "fcm.googleapis.com";
char *page_0 = "/fcm/send";
char *auKey = "(Input your authorization key)";
char *data = "";
data =
"{"to":"/topics/(Input your topic)","
""data":{"
""title":"TEST TITLE","
""message":"TEST_Message""
"}"
"}"rn";
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)
{
printf("WSAStartup failed.n");
exit(1);
}
if ((Host = gethostbyname(hname)) == NULL) {
fprintf(stderr, " gethostbyname error for host: %s:",hname);
exit(1);
}
hSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (hSocket == INVALID_SOCKET)
{
printf("Socket failed.n");
exit(1);
}
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = AF_INET; // IP v4
servAddr.sin_addr.s_addr = inet_addr(inet_ntoa(*(struct in_addr*)*Host->h_addr_list));
servAddr.sin_port = htons(80);
if (connect(hSocket, (SOCKADDR*)&servAddr, sizeof(servAddr)) == SOCKET_ERROR)
{
printf("Connect failed.n");
exit(1);
}
printf("Connectednn");
process_http(hSocket, page_0, hname, data, auKey);
closesocket(hSocket);
WSACleanup;
return 0;
}