What happened to ip proxy signature failure: signature authentication error handling

What's going on with proxy IP signing failures?

Recently, a lot of old iron in the docking API encounteredsignature authentication errorThe most common problem is that the key is not recognized by the system. The most common thing is that the key is filled correctly, but the system does not recognize it. To cite a real case: there is a data collection buddy, 3:00 a.m. sent me a message that the signature is always reported as an error, and found that the server time is faster than the local 8 minutes ...

Four pothole rollover sites

1. The key is screwed up.: Some platforms use both AccessKey and SecretKey, and often people write the two parameters in the wrong place.

2. The times don't match up.: Especially when using overseas proxy nodes, there is a time zone difference between Beijing time and UTC time!

 Correct timestamp generation posture (Python example)
import time
timestamp = str(int(time.time() 1000)) To be accurate to milliseconds!

3. No signature in the request header.Some platforms require it to be placed in the Authorization header, so putting it in the wrong place is just cool.

4. Proxy IP instability: When using dynamic residential proxies, the signature is invalidated due to IP switching in the middle of the process, which is the most pitiful.

Hands-on demining

Let's start with the diagnostic flowchart:

check key → verify timestamp → verify signature algorithm → test proxy stability
   ↓ ↓ ↓ ↓
re-sign key synchronize NTP time compare official example replace static IP

Here's the kicker.Proxy IP instabilityThe problem. Previously there is a cross-border e-commerce friends, with dynamic residential agent always in the early morning dropped signature. Later changed the ipipgoStatic Home PackageThe $35/IP/month one, the problem goes away straight away - because static IPs don't change midway, the signature is naturally stable.

QA First Aid Kit

Q：The key is absolutely correct, but it just reports an error?
A: Check the parameter encoding format, especially when containing special symbols to do URL encoding

Q: How much of a timestamp error can go wrong?
A: Most platforms allow ±5 minutes, but it is recommended to keep it within ±1 minute. When extracting with ipipgo's API, remember to check the time zone synchronization function

Q: Which agent do you recommend for enterprise-level business?
A: Directly onipipgo Dynamic Residential (Enterprise Edition)The price of $9.47/GB with automatic re-signing mechanism is suitable for high-frequency request scenarios

Choose the right tool for the job

Dealing with signature errors is like fixing a car, you get twice the result with half the effort when you have the right tools. ipipgo's three tricks of the trade:

1. exclusive client with debugging mode, real-time display of signature parameters
2. support for a fixed period of time IP unchanged (minimum 2 hours)
3. provide ready-made signature generation SDK (Java/Python/PHP are available)

Finally, a piece of cold knowledge: the signature algorithm of some platforms will take the proxy IP address into account. If you use a normal proxy, the IP address will change and you'll be in trouble. ipipgo's signature algorithm will count the IP address as well.TK LineSupport for IP binding is especially suited to this perverse need.

Don't have an iron head when it comes to signature issues, it's probably quicker to switch to a reliable proxy provider than to toss the code. After all, time is money, don't you think? (End)